The Tide Chart www.thetidechart.com September 2026 · generated 4 Sep 2026, 13:43
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Raoul or Sunday Island · September 2026 13:43 · UTC+12
Tonga 'Eua 29.250° S · 177.930° W

Raoul or Sunday Island Tide Chart

Tide predictions, solunar fishing times and marine weather for Raoul or Sunday Island, Tonga — updated daily, free forever.

Falling
0.3 m
Low in 4h 17m
-0.5 m at 18:00
Last high tide: 0.5 m at 12:00

The water level is falling. Next low tide in 4 h 17 min (18:00).

06:03 17:38 Coefficient 35 · low Calculated for Raoul or Sunday Island's local time · UTC+12

At a glance

Wind 3 kn from S · gust 4 kn Waves 1.8 m from SSW · 11 s Fish activity Slow 2 major + 1 minor periods Air temp 16° feels like 16° Water temp 19° Sea surface Pressure 1022 hPa Steady UV index 7 High exposure Coefficient 35 43 morning · 35 afternoon

Pick a date

September 2026

Tides

Low 05:50 · -0.6 m High 12:00 · 0.5 m Low 18:00 · -0.5 m
High Low Daylight · 11h 35m Major Minor

L 05:50 -0.6 m H 12:00 0.5 m L 18:00 -0.5 m

Gauge station · FES2022 global tide model · heights referenced to Mean Sea Level · Pacific/Auckland (UTC+12) · Why might this differ?

HAT
0.5 m
highest astronomical tide
MSL
-0.1 m
mean sea level — the chart's zero
LAT
-0.6 m
lowest astronomical tide

The sun rises at 06:03 and sets at 17:38. Today brings 1 high tide and 2 low tides: high water at 12:00 (0.5 m); low water at 05:50 (-0.6 m) and 18:00 (-0.5 m). The sun crosses the local meridian at 11:50, its highest point of the day.

Hour by hour

Interpolated heights · Friday 4 September
HourHeightTrend
00:00 -0.4 m ↘ Falling
01:00 -0.4 m ↘ Falling
02:00 -0.5 m ↘ Falling
03:00 -0.5 m ↘ Falling
04:00 -0.6 m ↘ Falling
05:00 -0.6 m ↘ Falling
06:00 -0.6 m ↗ Rising
07:00 -0.5 m ↗ Rising
08:00 -0.3 m ↗ Rising
09:00 0.0 m ↗ Rising
10:00 0.2 m ↗ Rising
11:00 0.4 m ↗ Rising
HourHeightTrend
12:00 0.5 m ↘ Falling
13:00 0.5 m ↘ Falling
14:00 0.3 m ↘ Falling
15:00 0.0 m ↘ Falling
16:00 -0.2 m ↘ Falling
17:00 -0.4 m ↘ Falling
18:00 -0.5 m ↗ Rising
19:00 -0.5 m ↗ Rising
20:00 -0.5 m ↗ Rising
21:00 -0.4 m ↗ Rising
22:00 -0.4 m ↗ Rising
23:00 -0.4 m ↗ Rising

Sea & weather now

Conditions at Raoul or Sunday Island right now, in station-local time.

Air temp 16°C Overcast · feels like 16° · H 17° · L 16°
Water temp 19°C 19° to 19° today
Wind 3 kn S · Force 1 · Light air · gusts 4 kn
Swell 1.8 m SSW · 11 s period
Humidity 58% Dew point 8°
Visibility 24 km Cloud cover 97%

Next 24 hours

temperature · wind · rain · humidity
00:00 Overcast 17° 10 N 26% 0.0 61%
02:00 Light drizzle 16° 7 NNW 55% 0.1 63%
04:00 Light drizzle 16° 6 NW 66% 0.2 67%
06:00 Light drizzle 16° 5 WNW 58% 0.2 66%
08:00 Light drizzle 16° 4 W 49% 0.2 64%
10:00 Partly cloudy 16° 2 SSW 29% 0.0 61%
12:00 Mainly clear 16° 3 S 3% 0.0 60%
14:00 Partly cloudy 17° 3 SW 0% 0.0 56%
16:00 Clear sky 17° 5 SW 0% 0.0 55%
18:00 Clear sky 17° 4 W 0% 0.0 57%
20:00 Light drizzle 17° 5 W 2% 0.1 60%
22:00 Light drizzle 16° 7 WSW 2% 0.2 65%
23:00 Light drizzle 16° 7 WSW 1% 0.3 67%

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

Fishing barometer

1022 hPa → Stable
  • Rising Very good Rising pressure after a low signals settling weather — fish feed confidently and this is often the best barometer window of all.
  • Stable Normal activity — today 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 1021 hPa max 1025 hPa Hover, tap or arrow-key the line to read any hour.

The barometer is holding steady. Expect routine feeding behaviour, with the usual peaks around tide changes and the solunar periods rather than any pressure-driven surge.

UV index

solar protection

UV 7

High

High exposure — protection is essential: hat, sunglasses and SPF 30+, and take shade around midday.

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 19° Ranges 19° to 19° today
19°
0 h
19°
2 h
19°
4 h
19°
6 h
19°
8 h
19°
10 h
19°
12 h
19°
14 h
19°
16 h
19°
18 h
19°
20 h
19°
22 h
19°
24 h

The sea surface holds around 18.7° today, moving between 18.5° and 18.9°. 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
  • Fri 4 Mainly clear 17°/16° 10 kn
  • Sat 5 Clear sky 16°/16° 7 kn
  • Sun 6 Clear sky 16°/16° 5 kn
  • Mon 7 Clear sky 17°/16° 17 kn
  • Tue 8 Drizzle 18°/16° 18 kn
  • Wed 9 Light drizzle 18°/15° 16 kn
  • Thu 10 Clear sky 17°/15° 13 kn

Air quality

Fair · EAQI 27

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

O₃ Ozone Fair 66.0µg/m³ Forms in sunlight; can irritate airways at high levels. Bar is scaled to 130 µg/m³, where the "poor" band starts.
PM10 Good 7.1µg/m³ Coarse particles from dust, sea spray and traffic. Bar is scaled to 50 µg/m³, where the "poor" band starts.
PM2.5 Good 4.2µg/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 Raoul or Sunday Island local time.

Tidal coefficient · September

Bigger coefficients mean larger tides and stronger currents
Friday 4 September 35 Low

Morning 43 · afternoon 35

Month range 20 – 104

Heights this month span -0.7 m to 0.7 m above the chart datum

Biggest tides: 10–12 Sep (coef 104) · Quietest stretch: 18–19 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 SSW (200°) · 11.4 s period
Most frequent waves 0.9 m About half the significant height — what you will see most of the time.
Significant height 1.8 m The standard forecast figure — roughly 1 wave in 7 runs higher, on a 11.4 second period.
Maximum waves 3.6 m The odd crest reaches this — allow for it before heading into exposed water.
Swell height 0 – 3.5 m scale 00:00 · 06:00 · 12:00 · 18:00 · 24:00
0 h 2.6 m 13 s SSW
2 h 2.4 m 12 s SSW
4 h 2.2 m 12 s SSW
6 h 2.1 m 12 s SSW
8 h 2.0 m 12 s SSW
10 h 2.0 m 12 s SSW
12 h 1.9 m 12 s SSW
14 h 1.8 m 11 s SSW
16 h 1.7 m 11 s SSW
18 h 1.6 m 11 s SSW
20 h 1.5 m 11 s SSW
22 h 1.5 m 11 s SSW
24 h 1.5 m 11 s SSW

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 Raoul or Sunday Island.

Best fishing times today

Slow

Solunar theory rates today a slow day for fishing at Raoul or Sunday Island — plan around the major and minor periods below.

Major Peak activity

03:59 – 05:59

Moon overhead (lunar transit)

Overlaps sunrise or sunset
Minor Average activity

09:35 – 10:35

Moonset

Major Peak activity

16:30 – 18:30

Moon underfoot (opposing transit)

Overlaps sunrise or sunset
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

Friday 4 September
Last quarter 54% illuminated · 21.8 days old Moonrise — · Moonset 10:05 · transit 04:59 Visible for 10h 05m
rise — set 10:05 · 301° WNW transit 04:59
04 SEP Last Quarter 19:51 today
11 SEP New Moon 15:26 in 7 days
19 SEP First Quarter 08:43 in 15 days
27 SEP Full Moon 05:49 in 23 days

Planner

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

Bite windows

Friday 4 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.

Prime window

04:50 – 06:50

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

High tide turn

11:00 – 13:00

Water peaks at 12:00 then starts to fall.

Prime window

17:00 – 19:00

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: 18–19 Sep (coef 20)

Astronomical observation · moon, sun and Earth

today, 4 September 2026
Moon Distance Earth–Moon 370,940km Angular diameter 0° 32′
Sun Distance Earth–Sun 150,879,141km Angular diameter 0° 32′

Daylight & twilight

Station local time
Golden hour, blue hour and twilight times at Raoul or Sunday Island today, morning and evening.
LightMorningEvening
Golden hourSoft, warm light — the photographer's window 05:49 – 06:35 17:06 – 17:53
Blue hourDeep even blue just past the sun 05:39 – 05:49 17:53 – 18:02
Civil twilightBright enough to work without lights 05:39 – 06:03 17:38 – 18:02
Nautical twilightHorizon still visible at sea 05:12 – 05:39 18:02 – 18:29
Astronomical twilightThe last trace of sunlight 04:44 – 05:12 18:29 – 18:57

Lighting the Earth at this moment

13:43 UTC+12 · 4 September 2026 · equirectangular, 180°W → 180°E
Day and night world map showing where Raoul or Sunday Island sits right now

The bright band marks where the Sun stands overhead right now; the pin is Raoul or Sunday 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 Raoul or Sunday Island.
Day Moon Sun 1st tide 2nd tide 3rd tide 4th tide Coefficient Activity
1 Tue 84% illuminated · waning Sunrise06:07 Sunset17:37 03:40 -0.6 m low tide 09:40 0.6 m high tide 15:50 -0.6 m low tide 22:00 0.7 m high tide 79 · High Fair
2 Wed 75% illuminated · waning Sunrise06:06 Sunset17:37 04:20 -0.7 m low tide 10:30 0.6 m high tide 16:30 -0.6 m low tide 22:40 0.7 m high tide 66 · Average Slow
3 Thu 65% illuminated · waning Sunrise06:04 Sunset17:38 05:00 -0.7 m low tide 11:10 0.6 m high tide 17:20 -0.5 m low tide 23:30 0.6 m high tide 51 · Average Fair
4 Fri 54% illuminated · waning Sunrise06:03 Sunset17:38 05:50 -0.6 m low tide 12:00 0.5 m high tide 18:00 -0.5 m low tide 35 · Low Slow
5 Sat 42% illuminated · waning Sunrise06:02 Sunset17:39 00:10 0.6 m high tide 06:40 -0.6 m low tide 13:00 0.5 m high tide 19:00 -0.4 m low tide 39 · Low Slow
6 Sun 31% illuminated · waning Sunrise06:01 Sunset17:39 01:10 0.6 m high tide 07:40 -0.6 m low tide 14:00 0.4 m high tide 20:00 -0.4 m low tide 53 · Average Fair
7 Mon 21% illuminated · waning Sunrise06:00 Sunset17:40 02:10 0.5 m high tide 08:50 -0.5 m low tide 15:10 0.4 m high tide 21:10 -0.4 m low tide 69 · Average Fair
8 Tue 12% illuminated · waning Sunrise05:58 Sunset17:40 03:20 0.5 m high tide 09:50 -0.5 m low tide 16:20 0.5 m high tide 22:20 -0.4 m low tide 83 · High Fair
9 Wed 6% illuminated · waning Sunrise05:57 Sunset17:41 04:30 0.5 m high tide 11:00 -0.6 m low tide 17:20 0.5 m high tide 23:30 -0.5 m low tide 95 · Very high Excellent
10 Thu 2% illuminated · waning Sunrise05:56 Sunset17:41 05:40 0.5 m high tide 12:00 -0.6 m low tide 18:20 0.6 m high tide 102 · Very high Excellent
11 Fri 0% illuminated · waning Sunrise05:55 Sunset17:42 00:30 -0.5 m low tide 06:40 0.6 m high tide 13:00 -0.6 m low tide 19:10 0.6 m high tide 104 · Very high Excellent
12 Sat 1% illuminated · waxing Sunrise05:54 Sunset17:42 01:30 -0.6 m low tide 07:40 0.6 m high tide 13:50 -0.7 m low tide 20:00 0.7 m high tide 101 · Very high Excellent
13 Sun 4% illuminated · waxing Sunrise05:52 Sunset17:43 02:20 -0.7 m low tide 08:20 0.6 m high tide 14:30 -0.6 m low tide 20:40 0.7 m high tide 93 · Very high Excellent
14 Mon 9% illuminated · waxing Sunrise05:51 Sunset17:43 03:00 -0.7 m low tide 09:10 0.6 m high tide 15:20 -0.6 m low tide 21:30 0.7 m high tide 82 · High Excellent
15 Tue 16% illuminated · waxing Sunrise05:50 Sunset17:44 03:40 -0.7 m low tide 09:50 0.6 m high tide 16:00 -0.6 m low tide 22:10 0.7 m high tide 68 · Average Fair
16 Wed 24% illuminated · waxing Sunrise05:49 Sunset17:44 04:20 -0.7 m low tide 10:40 0.6 m high tide 16:40 -0.5 m low tide 22:50 0.6 m high tide 54 · Average Slow
17 Thu 33% illuminated · waxing Sunrise05:48 Sunset17:45 05:10 -0.6 m low tide 11:20 0.5 m high tide 17:20 -0.5 m low tide 23:30 0.6 m high tide 39 · Low Fair
18 Fri 42% illuminated · waxing Sunrise05:46 Sunset17:45 05:50 -0.6 m low tide 12:00 0.5 m high tide 18:00 -0.4 m low tide 25 · Low Slow
19 Sat 51% illuminated · waxing Sunrise05:45 Sunset17:46 00:10 0.5 m high tide 06:30 -0.5 m low tide 12:50 0.4 m high tide 18:50 -0.4 m low tide 20 · Low Slow
20 Sun 61% illuminated · waxing Sunrise05:44 Sunset17:46 00:50 0.4 m high tide 07:20 -0.5 m low tide 13:40 0.4 m high tide 19:40 -0.3 m low tide 29 · Low Fair
21 Mon 70% illuminated · waxing Sunrise05:43 Sunset17:47 01:50 0.4 m high tide 08:10 -0.4 m low tide 14:30 0.3 m high tide 20:40 -0.3 m low tide 43 · Low Fair
22 Tue 78% illuminated · waxing Sunrise05:42 Sunset17:47 02:40 0.4 m high tide 09:10 -0.4 m low tide 15:30 0.3 m high tide 21:40 -0.3 m low tide 57 · Average Fair
23 Wed 86% illuminated · waxing Sunrise05:40 Sunset17:48 03:40 0.4 m high tide 10:10 -0.4 m low tide 16:30 0.4 m high tide 22:30 -0.3 m low tide 71 · High Fair
24 Thu 92% illuminated · waxing Sunrise05:39 Sunset17:48 04:40 0.4 m high tide 11:00 -0.4 m low tide 17:20 0.4 m high tide 23:30 -0.4 m low tide 84 · High Good
25 Fri 97% illuminated · waxing Sunrise05:38 Sunset17:49 05:30 0.4 m high tide 11:50 -0.5 m low tide 18:00 0.5 m high tide 94 · Very high Excellent
26 Sat 99% illuminated · waxing Sunrise05:37 Sunset17:49 00:10 -0.5 m low tide 06:20 0.5 m high tide 12:30 -0.5 m low tide 18:50 0.5 m high tide 100 · Very high Excellent
27 Sun 100% illuminated · waning Sunrise06:35 Sunset18:50 01:00 -0.5 m low tide 02:50 -0.3 m high tide 03:00 -0.5 m low tide 08:10 0.5 m high tide 102 · Very high Excellent
28 Mon 98% illuminated · waning Sunrise06:34 Sunset18:50 02:40 -0.6 m low tide 08:50 0.6 m high tide 15:00 -0.6 m low tide 21:10 0.7 m high tide 100 · Very high Excellent
29 Tue 94% illuminated · waning Sunrise06:33 Sunset18:51 03:30 -0.7 m low tide 09:40 0.6 m high tide 15:40 -0.6 m low tide 21:50 0.7 m high tide 92 · Very high Excellent
30 Wed 87% illuminated · waning Sunrise06:32 Sunset18:51 04:10 -0.7 m low tide 10:20 0.6 m high tide 16:20 -0.6 m low tide 22:30 0.7 m high tide 80 · High Fair

Biggest tides: 10–12 Sep (coef 104) · Quietest stretch: 18–19 Sep (coef 20) · Morning 43 · afternoon 35. Predicted levels run between -0.7 m and 0.7 m this month.

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

Nearby

Other tide stations close to Raoul or Sunday Island, ranked by distance.

Fishing sites near Raoul or Sunday Island

this station in gold · nearby stations in green

Map data © OpenStreetMap contributors.

Frequently asked questions

Tides, coefficients and fishing times for Raoul or Sunday Island, explained.

What time is high tide in Raoul or Sunday Island today?

High water at Raoul or Sunday Island today is at 12:00. 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 Raoul or Sunday 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 35 (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 Raoul or Sunday Island today?

The sun rises at 06:03 and sets at 17:38 local time, giving 11h 35m of daylight.

What is the water temperature in Raoul or Sunday Island today?

The sea surface at Raoul or Sunday Island is around 18.9°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 Raoul or Sunday Island today?

The significant wave height at Raoul or Sunday Island is currently 1.8 m with a period of 11.4 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/to/eua/raoul-or-sunday-island