The Tide Chart www.thetidechart.com September 2026 · generated 3 Sep 2026, 17:42
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Port Malmesbury, Kuiu Island · September 2026 17:42 · UTC−8
United States Alaska 56.305° N · 134.238° W

Port Malmesbury, Kuiu Island Tide Chart

Tide predictions, solunar fishing times and marine weather for Port Malmesbury, Kuiu Island, United States — updated daily, free forever.

Rising
6.1 ft
Last high tide: 6.1 ft at 5:40 PM

The water level is rising.

6:05 AM 7:45 PM Coefficient 37 · low Calculated for Port Malmesbury, Kuiu Island's local time · UTC−8

At a glance

Wind 12 mph from NNW · gust 11 mph Waves 2.6 ft from WNW · 6 s Fish activity Slow 2 major + 2 minor periods Air temp 63° feels like 57° Water temp 55° Sea surface Pressure 29.94 inHg Rising UV index 5 Moderate exposure Coefficient 37 45 morning · 37 afternoon

Pick a date

September 2026

Tides

Low 12:00 AM · -6.0 ft High 5:40 AM · 3.5 ft Low 11:30 AM · -2.2 ft High 5:40 PM · 6.1 ft
High Low Daylight · 13h 41m Major Minor

L 12:00 AM -6.0 ft H 5:40 AM 3.5 ft L 11:30 AM -2.2 ft H 5:40 PM 6.1 ft

Gauge station · FES2022 global tide model · heights referenced to Mean Sea Level · America/Sitka (UTC−8) · Why might this differ?

HAT
6.1 ft
highest astronomical tide
MSL
0.0 ft
mean sea level — the chart's zero
LAT
-6.0 ft
lowest astronomical tide

The sun rises at 06:05 and sets at 19:45. Today brings 2 high tides and 2 low tides: high water at 05:40 (1.1 m) and 17:40 (1.9 m); low water at 00:00 (-1.8 m) and 11:30 (-0.7 m). The sun crosses the local meridian at 12:56, its highest point of the day.

Hour by hour

Interpolated heights · Thursday 3 September
HourHeightTrend
12:00 AM -2.9 ft ↘ Falling
1:00 AM -5.3 ft ↗ Rising
2:00 AM -3.4 ft ↗ Rising
3:00 AM -0.8 ft ↗ Rising
4:00 AM 1.6 ft ↗ Rising
5:00 AM 3.2 ft ↗ Rising
6:00 AM 3.4 ft ↘ Falling
7:00 AM 2.8 ft ↘ Falling
8:00 AM 1.5 ft ↘ Falling
9:00 AM 0.0 ft ↘ Falling
10:00 AM -1.3 ft ↘ Falling
11:00 AM -2.1 ft ↘ Falling
HourHeightTrend
12:00 PM -2.1 ft ↗ Rising
1:00 PM -1.1 ft ↗ Rising
2:00 PM 0.7 ft ↗ Rising
3:00 PM 2.8 ft ↗ Rising
4:00 PM 4.7 ft ↗ Rising
5:00 PM 5.9 ft ↗ Rising
6:00 PM 6.1 ft ↘ Falling
7:00 PM 5.8 ft ↘ Falling
8:00 PM 5.2 ft ↘ Falling
9:00 PM 4.5 ft ↘ Falling
10:00 PM 3.9 ft ↘ Falling
11:00 PM 3.4 ft ↘ Falling

Sea & weather now

Conditions at Port Malmesbury, Kuiu Island right now, in station-local time.

Air temp 63°F Clear sky · feels like 57° · H 63° · L 53°
Water temp 56°F 56° to 56° today
Wind 11 mph NNW · Force 3 · Gentle breeze · gusts 11 mph
Swell 2.6 ft WNW · 6 s period
Humidity 60% Dew point 48°
Visibility 24 km Cloud cover 9%

Next 24 hours

temperature · wind · rain · humidity
12:00 AM Clear sky 55° 3 NNW 0% 0.0 79%
2:00 AM Clear sky 54° 5 NNW 0% 0.0 81%
4:00 AM Clear sky 54° 6 NNW 0% 0.0 88%
6:00 AM Clear sky 52° 8 NW 0% 0.0 91%
8:00 AM Clear sky 54° 9 NNW 0% 0.0 85%
10:00 AM Clear sky 59° 10 NNW 0% 0.0 74%
12:00 PM Clear sky 61° 12 NNW 0% 0.0 65%
2:00 PM Clear sky 63° 13 NNW 0% 0.0 57%
4:00 PM Clear sky 63° 13 NNW 0% 0.0 56%
6:00 PM Overcast 61° 10 NNW 0% 0.0 67%
8:00 PM Clear sky 55° 9 NNW 0% 0.0 74%
10:00 PM Clear sky 55° 8 N 0% 0.0 70%
11:00 PM Partly cloudy 55° 8 N 0% 0.0 71%

Rain chance and millimetres per hour, then relative humidity. Scroll for the rest of the day.

Fishing barometer

29.94 inHg ↗ Rising
  • Rising Very good — today Rising pressure after a low signals settling weather — fish feed confidently and this is often the best barometer window of all.
  • Stable Normal activity A steady barometer for a day or more means settled conditions and predictable, average feeding around tides and solunar peaks.
  • Falling Good at first A dropping barometer sparks a burst of feeding before the weather turns, then activity slows markedly as the front arrives.
min 29.77 inHg max 30.00 inHg Hover, tap or arrow-key the line to read any hour.

The barometer is rising, which usually switches feeding back on: fish sense settling conditions and move to feed with confidence. A rising trend after a spell of low pressure is one of the strongest signals to get out on the water.

UV index

solar protection

UV 5

Moderate

Moderate exposure — wear sunglasses and apply SPF 30+ if you are out over the middle of the day.

1–2 · Low
Little risk — most people need no sun protection.
3–7 · Moderate to high
Wear a hat, sunglasses and SPF 30+, and take shade around midday.
8+ · Very high to extreme
Use SPF 50+, cover up and stay out of the sun through the middle of the day.
Water temperature 56° Ranges 56° to 56° today
55°
0 h
55°
2 h
55°
4 h
55°
6 h
55°
8 h
55°
10 h
55°
12 h
55°
14 h
57°
16 h
57°
18 h
57°
20 h
55°
22 h
55°
24 h

The sea surface holds around 13.3° today, moving between 13.1° and 13.5°. Water temperature sets the pace of fish metabolism, so even a small shift can change where fish hold and how actively they feed.

Outlook

Next 7 days
  • Thu 3 Clear sky 63°/53° 12 mph
  • Fri 4 Mainly clear 64°/53° 9 mph
  • Sat 5 Clear sky 64°/52° 6 mph
  • Sun 6 Overcast 62°/55° 4 mph
  • Mon 7 Overcast 59°/54° 7 mph
  • Tue 8 Overcast 60°/55° 7 mph
  • Wed 9 Overcast 59°/52° 12 mph

Air quality

Fair · EAQI 29

Air quality is fair. Fine for outdoor activity; unusually sensitive people should watch for symptoms.

O₃ Ozone Fair 63.7µg/m³ Forms in sunlight; can irritate airways at high levels. Bar is scaled to 130 µg/m³, where the "poor" band starts.
PM10 Good 4.6µg/m³ Coarse particles from dust, sea spray and traffic. Bar is scaled to 50 µg/m³, where the "poor" band starts.
PM2.5 Good 3.9µg/m³ Fine particles that reach deep into the lungs. Bar is scaled to 25 µg/m³, where the "poor" band starts.

Bands follow the European Air Quality Index; the day's index is its worst hour, each pollutant its daily mean. Air quality from CAMS.

Weather & marine data by Open-Meteo.com (CC BY 4.0) · times are Port Malmesbury, Kuiu Island local time.

Tidal coefficient · September

Bigger coefficients mean larger tides and stronger currents
Thursday 3 September 37 Low

Morning 45 · afternoon 37

Month range 20 – 104

Heights this month span -7.9 ft to 8.5 ft above the chart datum

Biggest tides: 9–11 Sep (coef 104) · Quietest stretch: 17–19 Sep (coef 20)

September 2026 — hover, tap or arrow-key a bar to read that day

Very high High Average Low

A larger coefficient means a wider gap between high and low water, so the strongest currents run along the sea bed. Tidal range also shifts with the weather — check the wind and swell before you head out.

Swell

From WNW (300°) · 6.3 s period
Most frequent waves 1.3 ft About half the significant height — what you will see most of the time.
Significant height 2.6 ft The standard forecast figure — roughly 1 wave in 7 runs higher, on a 6.3 second period.
Maximum waves 5.6 ft The odd crest reaches this — allow for it before heading into exposed water.
Swell height 0 – 4.9 ft scale 00:00 · 06:00 · 12:00 · 18:00 · 24:00
0 h 2.3 ft 9 s WSW
2 h 2.3 ft 8 s WSW
4 h 2.3 ft 8 s WSW
6 h 2.3 ft 8 s WSW
8 h 2.3 ft 8 s WSW
10 h 2.3 ft 7 s W
12 h 2.3 ft 7 s WNW
14 h 2.6 ft 6 s WNW
16 h 2.6 ft 6 s WNW
18 h 3.0 ft 6 s WNW
20 h 2.6 ft 7 s WNW
22 h 2.6 ft 7 s WNW
24 h 2.6 ft 7 s WNW

These figures describe the swell out in open water. Closer to the beach the waves shift with the shape of the coastline and the seabed, though in most spots they end up broadly similar.

Solunar

Feeding windows from the moon's transit, rise and set — the free solunar rating for Port Malmesbury, Kuiu Island.

Best fishing times today

Slow

Solunar theory rates today a slow day for fishing at Port Malmesbury, Kuiu Island — plan around the major and minor periods below.

Major Peak activity

4:57 AM – 6:57 AM

Moon overhead (lunar transit)

Overlaps sunrise or sunset
Minor Average activity

3:00 PM – 4:00 PM

Moonset

Major Peak activity

5:28 PM – 7:28 PM

Moon underfoot (opposing transit)

Overlaps sunrise or sunset
Minor Average activity

8:49 PM – 9:49 PM

Moonrise

Major period Minor period Daylight

Major periods track the moon's transit and opposing transit and run about two hours; minor periods open at moonrise and moonset and last about an hour. When a period lands on sunrise or sunset, activity climbs higher still — and that overlap happens today.

Moon

Thursday 3 September
Last quarter 56% illuminated · 21.6 days old Moonrise 21:19 · Moonset 15:30 · transit 05:57 Visible for 18h 11m
rise 21:19 · 36° NE set 15:30 · 323° NW transit 05:57
03 SEP Last Quarter 11:51 PM today
10 SEP New Moon 7:26 PM in 7 days
18 SEP First Quarter 12:43 PM in 15 days
26 SEP Full Moon 8:49 AM in 23 days

Planner

When to go this week, and which days of September are worth the drive.

Bite windows

Thursday 3 September

Fish feed hardest when the water starts moving — plan around the hour before and after each tide turn, and doubly so where a turn meets a solunar major period.

Low tide turn

00:00 – 01:00

Water bottoms out at 00:00 then starts to rise.

Prime window

04:40 – 06:40

Tide turn overlaps a major solunar period — the best bite of the day.

Low tide turn

10:30 – 12:30

Water bottoms out at 11:30 then starts to rise.

Prime window

16:40 – 18:40

Tide turn overlaps a major solunar period — the best bite of the day.

Best days in September

Ranked by tidal coefficient — pick a day to load it.

Quietest stretch: 17–19 Sep (coef 20)

Astronomical observation · moon, sun and Earth

today, 3 September 2026
Moon Distance Earth–Moon 371,232km Angular diameter 0° 32′
Sun Distance Earth–Sun 150,884,371km Angular diameter 0° 32′

Daylight & twilight

Station local time
Golden hour, blue hour and twilight times at Port Malmesbury, Kuiu Island today, morning and evening.
LightMorningEvening
Golden hourSoft, warm light — the photographer's window 5:41 AM – 6:55 AM 6:56 PM – 8:09 PM
Blue hourDeep even blue just past the sun 5:25 AM – 5:41 AM 8:09 PM – 8:25 PM
Civil twilightBright enough to work without lights 5:25 AM – 6:05 AM 7:45 PM – 8:25 PM
Nautical twilightHorizon still visible at sea 4:36 AM – 5:25 AM 8:25 PM – 9:14 PM
Astronomical twilightThe last trace of sunlight 3:39 AM – 4:36 AM 9:14 PM – 10:10 PM

Lighting the Earth at this moment

5:42 PM UTC−8 · 3 September 2026 · equirectangular, 180°W → 180°E
Day and night world map showing where Port Malmesbury, Kuiu Island sits right now

The bright band marks where the Sun stands overhead right now; the pin is Port Malmesbury, Kuiu Island. As the Earth turns, the day-and-night line sweeps westward and this map refreshes with the local clock.

Tide table

September 2026
Tide times, heights, coefficient and fishing activity for every day of September 2026 at Port Malmesbury, Kuiu Island.
Day Moon Sun 1st tide 2nd tide 3rd tide 4th tide Coefficient Activity
1 Tue 77% illuminated · waning Sunrise6:01 AM Sunset7:51 PM 3:50 AM 5.6 ft high tide 10:10 AM -4.6 ft low tide 4:10 PM 7.2 ft high tide 11:10 PM -6.6 ft low tide 68 · Average Good
2 Wed 67% illuminated · waning Sunrise6:03 AM Sunset7:48 PM 4:40 AM 4.6 ft high tide 10:50 AM -3.3 ft low tide 4:50 PM 6.9 ft high tide 53 · Average Fair
3 Thu 56% illuminated · waning Sunrise6:05 AM Sunset7:45 PM 12:00 AM -5.9 ft low tide 5:40 AM 3.6 ft high tide 11:30 AM -2.3 ft low tide 5:40 PM 6.2 ft high tide 37 · Low Slow
4 Fri 44% illuminated · waning Sunrise6:07 AM Sunset7:43 PM 1:00 AM -5.6 ft low tide 6:40 AM 2.3 ft high tide 12:30 PM -1.0 ft low tide 6:40 PM 5.2 ft high tide 36 · Low Slow
5 Sat 33% illuminated · waning Sunrise6:09 AM Sunset7:40 PM 2:20 AM -5.2 ft low tide 8:30 AM 2.0 ft high tide 1:50 PM -0.3 ft low tide 8:00 PM 4.6 ft high tide 51 · Average Fair
6 Sun 23% illuminated · waning Sunrise6:11 AM Sunset7:37 PM 3:50 AM -5.6 ft low tide 10:40 AM 2.6 ft high tide 3:40 PM -0.7 ft low tide 9:40 PM 4.9 ft high tide 66 · Average Good
7 Mon 14% illuminated · waning Sunrise6:13 AM Sunset7:35 PM 5:00 AM -6.6 ft low tide 11:30 AM 3.9 ft high tide 5:20 PM -1.6 ft low tide 11:00 PM 5.6 ft high tide 81 · High Good
8 Tue 7% illuminated · waning Sunrise6:15 AM Sunset7:32 PM 6:00 AM -7.2 ft low tide 12:10 PM 5.2 ft high tide 6:20 PM -3.0 ft low tide 93 · Very high Excellent
9 Wed 2% illuminated · waning Sunrise6:17 AM Sunset7:30 PM 12:00 AM 6.6 ft high tide 6:50 AM -7.5 ft low tide 12:50 PM 6.2 ft high tide 7:00 PM -4.6 ft low tide 101 · Very high Excellent
10 Thu 0% illuminated · waning Sunrise6:18 AM Sunset7:27 PM 12:50 AM 7.2 ft high tide 7:20 AM -7.9 ft low tide 1:30 PM 7.2 ft high tide 7:50 PM -5.6 ft low tide 104 · Very high Excellent
11 Fri 1% illuminated · waxing Sunrise6:20 AM Sunset7:24 PM 1:30 AM 7.5 ft high tide 8:00 AM -7.5 ft low tide 2:00 PM 7.5 ft high tide 8:20 PM -6.6 ft low tide 102 · Very high Excellent
12 Sat 4% illuminated · waxing Sunrise6:22 AM Sunset7:21 PM 2:20 AM 7.2 ft high tide 8:30 AM -6.9 ft low tide 2:30 PM 7.9 ft high tide 9:00 PM -6.9 ft low tide 95 · Very high Excellent
13 Sun 8% illuminated · waxing Sunrise6:24 AM Sunset7:19 PM 2:50 AM 6.6 ft high tide 9:10 AM -5.9 ft low tide 3:00 PM 7.5 ft high tide 9:40 PM -6.9 ft low tide 84 · High Excellent
14 Mon 15% illuminated · waxing Sunrise6:26 AM Sunset7:16 PM 3:30 AM 5.6 ft high tide 9:40 AM -4.9 ft low tide 3:30 PM 6.9 ft high tide 10:20 PM -6.6 ft low tide 71 · High Good
15 Tue 23% illuminated · waxing Sunrise6:28 AM Sunset7:13 PM 4:00 AM 4.6 ft high tide 10:20 AM -3.6 ft low tide 3:50 PM 6.2 ft high tide 11:00 PM -6.2 ft low tide 56 · Average Good
16 Wed 31% illuminated · waxing Sunrise6:30 AM Sunset7:11 PM 4:40 AM 3.3 ft high tide 11:00 AM -2.6 ft low tide 4:30 PM 5.6 ft high tide 11:40 PM -5.2 ft low tide 42 · Low Fair
17 Thu 40% illuminated · waxing Sunrise6:32 AM Sunset7:08 PM 5:20 AM 2.3 ft high tide 11:40 AM -1.6 ft low tide 5:00 PM 4.6 ft high tide 28 · Low Slow
18 Fri 50% illuminated · waxing Sunrise6:34 AM Sunset7:05 PM 12:30 AM -4.6 ft low tide 6:20 AM 1.3 ft high tide 12:30 PM -1.0 ft low tide 5:50 PM 3.6 ft high tide 20 · Low Slow
19 Sat 59% illuminated · waxing Sunrise6:36 AM Sunset7:03 PM 1:30 AM -4.3 ft low tide 10:00 AM 1.3 ft high tide 1:40 PM -0.3 ft low tide 6:50 PM 3.0 ft high tide 27 · Low Slow
20 Sun 68% illuminated · waxing Sunrise6:38 AM Sunset7:00 PM 2:50 AM -4.3 ft low tide 11:00 AM 2.0 ft high tide 3:00 PM -0.7 ft low tide 8:30 PM 2.6 ft high tide 40 · Low Fair
21 Mon 77% illuminated · waxing Sunrise6:40 AM Sunset6:57 PM 4:00 AM -4.6 ft low tide 11:40 AM 3.0 ft high tide 4:20 PM -1.3 ft low tide 10:30 PM 3.0 ft high tide 55 · Average Good
22 Tue 85% illuminated · waxing Sunrise6:42 AM Sunset6:55 PM 4:50 AM -5.2 ft low tide 12:10 PM 3.6 ft high tide 5:10 PM -2.3 ft low tide 11:20 PM 3.9 ft high tide 69 · Average Good
23 Wed 91% illuminated · waxing Sunrise6:44 AM Sunset6:52 PM 5:40 AM -5.6 ft low tide 12:30 PM 4.3 ft high tide 6:00 PM -3.3 ft low tide 82 · High Excellent
24 Thu 96% illuminated · waxing Sunrise6:46 AM Sunset6:49 PM 12:00 AM 4.6 ft high tide 6:10 AM -5.9 ft low tide 12:40 PM 5.2 ft high tide 6:40 PM -4.6 ft low tide 92 · Very high Excellent
25 Fri 99% illuminated · waxing Sunrise6:48 AM Sunset6:47 PM 12:30 AM 5.6 ft high tide 6:50 AM -6.2 ft low tide 1:00 PM 5.9 ft high tide 7:20 PM -5.9 ft low tide 100 · Very high Excellent
26 Sat 100% illuminated · waning Sunrise6:50 AM Sunset6:44 PM 1:00 AM 6.2 ft high tide 7:20 AM -6.2 ft low tide 1:20 PM 6.9 ft high tide 7:50 PM -6.9 ft low tide 102 · Very high Excellent
27 Sun 98% illuminated · waning Sunrise6:52 AM Sunset6:41 PM 1:40 AM 6.6 ft high tide 8:00 AM -5.9 ft low tide 1:50 PM 7.9 ft high tide 8:30 PM -7.5 ft low tide 100 · Very high Excellent
28 Mon 94% illuminated · waning Sunrise6:54 AM Sunset6:39 PM 2:20 AM 6.9 ft high tide 8:30 AM -5.2 ft low tide 2:20 PM 8.2 ft high tide 9:20 PM -7.9 ft low tide 93 · Very high Excellent
29 Tue 88% illuminated · waning Sunrise6:56 AM Sunset6:36 PM 3:00 AM 6.6 ft high tide 9:10 AM -4.3 ft low tide 3:00 PM 8.5 ft high tide 10:00 PM -7.9 ft low tide 82 · High Excellent
30 Wed 80% illuminated · waning Sunrise6:58 AM Sunset6:33 PM 3:40 AM 5.9 ft high tide 9:50 AM -3.3 ft low tide 3:40 PM 7.9 ft high tide 10:50 PM -7.5 ft low tide 68 · Average Good

Biggest tides: 9–11 Sep (coef 104) · Quietest stretch: 17–19 Sep (coef 20) · Morning 45 · afternoon 37. Predicted levels run between -7.9 ft and 8.5 ft this month.

Heights are metres above the station's chart datum, so the biggest tides can dip just below zero. Every time shown is Port Malmesbury, Kuiu Island local time, with daylight saving already applied.

Nearby

Other tide stations close to Port Malmesbury, Kuiu Island, ranked by distance.

Fishing sites near Port Malmesbury, Kuiu Island

this station in gold · nearby stations in green

Map data © OpenStreetMap contributors.

All Alaska locations

Anchorage Kalifornsky Homer Anchor Point Cold Bay Atka Hobart Bay 5 miles NE of Point Brazil, Montague Island Adak Bight Adak Island Adugak Island Affleck Canal entrance, Kuiu Island Agnes Cove, Aialik Peninsula Aguchik Island, Kukak Bay Aialik Bay, North end Aialik Sill, Aialik Bay Akun Cove, Akun Island Akutan Harbor, Akutan Island Akutan, Akutan Island Alakanuk, Yukon River Albatross Anchorage, Balboa Bay Alitak, Lazy Bay Alva Bay, Revillagigedo Island Amak Island American Bay, Kaigani Strait Amukta Island, north side Anchor Point Anchor Point ANCHORAGE, Knik Arm Anderson Bay

Frequently asked questions

Tides, coefficients and fishing times for Port Malmesbury, Kuiu Island, explained.

What time is high tide in Port Malmesbury, Kuiu Island today?

High water at Port Malmesbury, Kuiu Island today is at 05:40 and 17:40. The full list of high and low tide times is in the table above and refreshes every day.

Is today a good day to fish in Port Malmesbury, Kuiu Island?

Based on solunar theory the fishing rating today is Slow. The strongest windows are the major periods around the lunar transit, which often line up with sunrise and sunset.

What is the tidal coefficient and why does it matter?

The coefficient runs from 0 to 120 and measures the tidal range — today it is 37 (Low). Higher numbers mean stronger currents and a bigger gap between high and low water, which matters for fishing, diving and boating.

When are sunrise and sunset in Port Malmesbury, Kuiu Island today?

The sun rises at 06:05 and sets at 19:45 local time, giving 13h 41m of daylight.

What is the water temperature in Port Malmesbury, Kuiu Island today?

The sea surface at Port Malmesbury, Kuiu Island is around 13.5°C right now. Water temperature sets the pace of fish metabolism, so the hourly strip above is worth a glance — even a small shift can change where fish hold and how actively they feed.

How big are the waves in Port Malmesbury, Kuiu Island today?

The significant wave height at Port Malmesbury, Kuiu Island is currently 0.8 m with a period of 6.3 s between crests. Individual sets can stack up to roughly twice that height, so allow a margin at exposed marks and anchorages.

Data: Open-Meteo (CC BY 4.0) · CAMS · OpenStreetMap · GeoNames (CC BY 4.0) · FES2022 — CNES/AVISO/LEGOS · IP geolocation by DB-IP (CC BY 4.0)

Estimates for planning only — not for navigation or safety-critical use. · www.thetidechart.com/us/alaska/port-malmesbury-kuiu-island