The Tide Chart www.thetidechart.com September 2026 · generated 5 Sep 2026, 00:48
The Tide Chart
Sign in Get started
Rivière-au-Tonnerre · September 2026 00:48 · UTC−4
Canada Quebec 50.275° N · 64.769° W

Rivière-au-Tonnerre Tide Chart

Tide predictions, solunar fishing times and marine weather for Rivière-au-Tonnerre, Canada — updated daily, free forever.

Falling
-0.4 m
Low in 1h 42m
-0.6 m at 02:30

The water level is falling. Next low tide in 1 h 42 min (02:30).

05:39 18:54 Coefficient 48 · low Calculated for Rivière-au-Tonnerre's local time · UTC−4

At a glance

Wind 5 kn from NE · gust 7 kn Waves 0.7 m from SE · 5 s Fish activity Fair 2 major + 2 minor periods Air temp 12° feels like 11° Water temp 15° Sea surface Pressure 1016 hPa Steady UV index 4 Moderate exposure Coefficient 48 41 morning · 48 afternoon

Pick a date

September 2026

Tides

Low 02:30 · -0.6 m High 08:00 · 0.1 m Low 13:40 · -0.6 m High 20:50 · 1.0 m
High Low Daylight · 13h 15m Major Minor

L 02:30 -0.6 m H 08:00 0.1 m L 13:40 -0.6 m H 20:50 1.0 m

Interpolated estimate · FES2022 global tide model · heights referenced to Mean Sea Level · America/Toronto (UTC−4) · Why might this differ?

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

The sun rises at 05:39 and sets at 18:54. Today brings 2 high tides and 2 low tides: high water at 08:00 (0.1 m) and 20:50 (1.0 m); low water at 02:30 (-0.6 m) and 13:40 (-0.6 m). The sun crosses the local meridian at 12:17, its highest point of the day.

Hour by hour

Interpolated heights · Saturday 5 September
HourHeightTrend
00:00 -0.3 m ↘ Falling
01:00 -0.4 m ↘ Falling
02:00 -0.6 m ↘ Falling
03:00 -0.6 m ↗ Rising
04:00 -0.5 m ↗ Rising
05:00 -0.3 m ↗ Rising
06:00 -0.1 m ↗ Rising
07:00 0.1 m ↗ Rising
08:00 0.1 m ↘ Falling
09:00 0.1 m ↘ Falling
10:00 -0.1 m ↘ Falling
11:00 -0.3 m ↘ Falling
HourHeightTrend
12:00 -0.5 m ↘ Falling
13:00 -0.6 m ↘ Falling
14:00 -0.6 m ↗ Rising
15:00 -0.5 m ↗ Rising
16:00 -0.2 m ↗ Rising
17:00 0.1 m ↗ Rising
18:00 0.4 m ↗ Rising
19:00 0.7 m ↗ Rising
20:00 0.9 m ↗ Rising
21:00 0.9 m ↘ Falling
22:00 0.8 m ↘ Falling
23:00 0.6 m ↘ Falling

Sea & weather now

Conditions at Rivière-au-Tonnerre right now, in station-local time.

Air temp 12°C Partly cloudy · feels like 11° · H 17° · L 11°
Water temp 15°C 15° to 15° today
Wind 5 kn NE · Force 2 · Light breeze · gusts 7 kn
Swell 0.7 m SE · 5 s period
Humidity 92% Dew point 11°
Visibility 24 km Cloud cover 60%

Next 24 hours

temperature · wind · rain · humidity
00:00 Partly cloudy 12° 5 NE 0% 0.0 92%
02:00 Overcast 12° 6 NNE 3% 0.0 92%
04:00 Overcast 12° 10 NE 5% 0.0 88%
06:00 Overcast 13° 10 NE 8% 0.0 87%
08:00 Mainly clear 14° 10 NE 13% 0.0 81%
10:00 Overcast 16° 10 ENE 15% 0.0 71%
12:00 Light drizzle 17° 6 ENE 30% 0.1 63%
14:00 Overcast 17° 3 NNE 52% 0.0 60%
16:00 Overcast 16° 5 SE 31% 0.0 58%
18:00 Overcast 14° 3 W 11% 0.0 72%
20:00 Overcast 13° 5 NNE 0% 0.0 66%
22:00 Overcast 12° 5 E 0% 0.0 84%
23:00 Overcast 11° 3 ENE 0% 0.0 83%

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

Fishing barometer

1016 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 1016 hPa max 1019 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 4

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 15° Ranges 15° to 15° today
15°
0 h
15°
2 h
15°
4 h
15°
6 h
15°
8 h
15°
10 h
15°
12 h
15°
14 h
15°
16 h
15°
18 h
15°
20 h
15°
22 h
15°
24 h

The sea surface holds around 14.7° today, moving between 14.5° and 15.1°. 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
  • Sat 5 Light drizzle 17°/11° 10 kn
  • Sun 6 Overcast 17°/11° 9 kn
  • Mon 7 Overcast 19°/11° 21 kn
  • Tue 8 Clear sky 16°/9° 16 kn
  • Wed 9 Overcast 13°/8° 13 kn
  • Thu 10 Overcast 14°/6° 18 kn
  • Fri 11 Clear sky 13°/5° 17 kn

Air quality

Fair · EAQI 30

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

O₃ Ozone Fair 60.4µg/m³ Forms in sunlight; can irritate airways at high levels. Bar is scaled to 130 µg/m³, where the "poor" band starts.
PM10 Good 2.9µg/m³ Coarse particles from dust, sea spray and traffic. Bar is scaled to 50 µg/m³, where the "poor" band starts.
PM2.5 Good 2.4µg/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 Rivière-au-Tonnerre local time.

Tidal coefficient · September

Bigger coefficients mean larger tides and stronger currents
Saturday 5 September 48 Low

Morning 41 · afternoon 48

Month range 20 – 104

Heights this month span -1.2 m to 1.3 m above the chart datum

Biggest tides: 9–12 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 SE (134°) · 4.7 s period
Most frequent waves 0.3 m About half the significant height — what you will see most of the time.
Significant height 0.7 m The standard forecast figure — roughly 1 wave in 7 runs higher, on a 4.7 second period.
Maximum waves 1.3 m The odd crest reaches this — allow for it before heading into exposed water.
Swell height 0 – 1.5 m scale 00:00 · 06:00 · 12:00 · 18:00 · 24:00
0 h 0.7 m 5 s SE
2 h 0.6 m 5 s SE
4 h 0.7 m 5 s SE
6 h 0.7 m 5 s SE
8 h 0.7 m 5 s ESE
10 h 0.7 m 5 s ESE
12 h 0.8 m 5 s ESE
14 h 0.8 m 5 s ESE
16 h 0.9 m 6 s ESE
18 h 0.9 m 6 s ESE
20 h 0.9 m 7 s ESE
22 h 0.9 m 7 s ESE
24 h 0.9 m 7 s ESE

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 Rivière-au-Tonnerre.

Best fishing times today

Fair

Solunar theory rates today a fair day for fishing at Rivière-au-Tonnerre — plan around the major and minor periods below.

Major Peak activity

06:11 – 08:11

Moon overhead (lunar transit)

Overlaps sunrise or sunset
Minor Average activity

15:38 – 16:38

Moonset

Major Peak activity

18:43 – 20:43

Moon underfoot (opposing transit)

Overlaps sunrise or sunset
Minor Average activity

22:52 – 23:52

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

Saturday 5 September
Last quarter 35% illuminated · 23.6 days old Moonrise 23:22 · Moonset 16:08 · transit 07:11 Visible for 16h 46m
rise 23:22 · 45° NE set 16:08 · 316° NW transit 07:11
10 SEP New Moon 23:26 in 5 days
18 SEP First Quarter 16:43 in 13 days
26 SEP Full Moon 12:49 in 21 days
03 OCT Last Quarter 09:25 in 28 days

Planner

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

Bite windows

Saturday 5 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

01:30 – 03:30

Water bottoms out at 02:30 then starts to rise.

Prime window

07:00 – 09:00

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

Low tide turn

12:40 – 14:40

Water bottoms out at 13:40 then starts to rise.

Prime window

19:50 – 21:50

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, 5 September 2026
Moon Distance Earth–Moon 368,756km Angular diameter 0° 33′
Sun Distance Earth–Sun 150,819,551km Angular diameter 0° 32′

Daylight & twilight

Station local time
Golden hour, blue hour and twilight times at Rivière-au-Tonnerre today, morning and evening.
LightMorningEvening
Golden hourSoft, warm light — the photographer's window 05:19 – 06:23 18:11 – 19:14
Blue hourDeep even blue just past the sun 05:06 – 05:19 19:14 – 19:27
Civil twilightBright enough to work without lights 05:06 – 05:39 18:54 – 19:27
Nautical twilightHorizon still visible at sea 04:25 – 05:06 19:27 – 20:08
Astronomical twilightThe last trace of sunlight 03:41 – 04:25 20:08 – 20:51

Lighting the Earth at this moment

00:48 UTC−4 · 5 September 2026 · equirectangular, 180°W → 180°E
Day and night world map showing where Rivière-au-Tonnerre sits right now

The bright band marks where the Sun stands overhead right now; the pin is Rivière-au-Tonnerre. 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 Rivière-au-Tonnerre.
Day Moon Sun 1st tide 2nd tide 3rd tide 4th tide Coefficient Activity
1 Tue 78% illuminated · waning Sunrise05:33 Sunset19:03 04:30 0.8 m high tide 10:30 -1.0 m low tide 16:50 1.1 m high tide 23:20 -0.9 m low tide 71 · High Good
2 Wed 69% illuminated · waning Sunrise05:35 Sunset19:01 05:10 0.7 m high tide 11:10 -0.9 m low tide 17:30 1.1 m high tide 56 · Average Fair
3 Thu 58% illuminated · waning Sunrise05:36 Sunset18:58 00:10 -0.8 m low tide 05:50 0.5 m high tide 11:50 -0.8 m low tide 18:30 1.1 m high tide 40 · Low Slow
4 Fri 46% illuminated · waning Sunrise05:38 Sunset18:56 01:10 -0.7 m low tide 06:40 0.3 m high tide 12:40 -0.7 m low tide 19:30 1.0 m high tide 34 · Low Slow
5 Sat 35% illuminated · waning Sunrise05:39 Sunset18:54 02:30 -0.6 m low tide 08:00 0.1 m high tide 13:40 -0.6 m low tide 20:50 1.0 m high tide 48 · Low Fair
6 Sun 24% illuminated · waning Sunrise05:41 Sunset18:52 04:00 -0.6 m low tide 09:40 0.1 m high tide 15:10 -0.6 m low tide 22:20 1.0 m high tide 64 · Average Good
7 Mon 15% illuminated · waning Sunrise05:42 Sunset18:50 05:20 -0.7 m low tide 11:10 0.2 m high tide 16:40 -0.6 m low tide 23:30 1.1 m high tide 79 · High Good
8 Tue 8% illuminated · waning Sunrise05:44 Sunset18:48 06:20 -0.8 m low tide 12:10 0.4 m high tide 17:50 -0.8 m low tide 91 · Very high Excellent
9 Wed 3% illuminated · waning Sunrise05:45 Sunset18:45 00:30 1.2 m high tide 07:10 -0.9 m low tide 13:00 0.6 m high tide 18:50 -1.0 m low tide 100 · Very high Excellent
10 Thu 0% illuminated · waning Sunrise05:47 Sunset18:43 01:20 1.2 m high tide 07:50 -1.0 m low tide 13:40 0.8 m high tide 19:40 -1.1 m low tide 104 · Very high Excellent
11 Fri 0% illuminated · waxing Sunrise05:48 Sunset18:41 02:10 1.2 m high tide 08:20 -1.1 m low tide 14:20 0.9 m high tide 20:30 -1.2 m low tide 102 · Very high Excellent
12 Sat 3% illuminated · waxing Sunrise05:50 Sunset18:39 02:50 1.1 m high tide 09:00 -1.1 m low tide 15:00 1.0 m high tide 21:10 -1.2 m low tide 96 · Very high Excellent
13 Sun 7% illuminated · waxing Sunrise05:51 Sunset18:36 03:30 1.0 m high tide 09:30 -1.0 m low tide 15:40 1.1 m high tide 22:00 -1.1 m low tide 86 · High Excellent
14 Mon 14% illuminated · waxing Sunrise05:53 Sunset18:34 04:00 0.8 m high tide 10:00 -1.0 m low tide 16:10 1.1 m high tide 22:40 -1.0 m low tide 73 · High Good
15 Tue 21% illuminated · waxing Sunrise05:54 Sunset18:32 04:40 0.6 m high tide 10:30 -0.9 m low tide 16:50 1.1 m high tide 23:20 -0.9 m low tide 59 · Average Good
16 Wed 30% illuminated · waxing Sunrise05:56 Sunset18:30 05:10 0.5 m high tide 11:10 -0.7 m low tide 17:30 1.0 m high tide 44 · Low Fair
17 Thu 39% illuminated · waxing Sunrise05:57 Sunset18:28 00:10 -0.7 m low tide 05:50 0.3 m high tide 11:40 -0.6 m low tide 18:10 0.9 m high tide 30 · Low Fair
18 Fri 48% illuminated · waxing Sunrise05:59 Sunset18:25 01:00 -0.5 m low tide 06:30 0.2 m high tide 12:20 -0.5 m low tide 19:10 0.8 m high tide 20 · Low Slow
19 Sat 58% illuminated · waxing Sunrise06:00 Sunset18:23 02:10 -0.4 m low tide 07:30 0.1 m high tide 13:20 -0.4 m low tide 20:20 0.7 m high tide 24 · Low Slow
20 Sun 67% illuminated · waxing Sunrise06:02 Sunset18:21 03:30 -0.4 m low tide 09:00 0.0 m high tide 14:30 -0.4 m low tide 21:40 0.7 m high tide 38 · Low Fair
21 Mon 76% illuminated · waxing Sunrise06:04 Sunset18:19 04:50 -0.4 m low tide 10:20 0.1 m high tide 16:00 -0.4 m low tide 22:50 0.7 m high tide 52 · Average Slow
22 Tue 83% illuminated · waxing Sunrise06:05 Sunset18:16 05:40 -0.5 m low tide 11:20 0.2 m high tide 17:00 -0.5 m low tide 23:40 0.8 m high tide 66 · Average Good
23 Wed 90% illuminated · waxing Sunrise06:07 Sunset18:14 06:20 -0.6 m low tide 12:10 0.4 m high tide 18:00 -0.7 m low tide 80 · High Excellent
24 Thu 95% illuminated · waxing Sunrise06:08 Sunset18:12 00:20 0.9 m high tide 06:50 -0.7 m low tide 12:40 0.5 m high tide 18:40 -0.8 m low tide 91 · Very high Excellent
25 Fri 99% illuminated · waxing Sunrise06:10 Sunset18:10 01:00 0.9 m high tide 07:20 -0.8 m low tide 13:20 0.7 m high tide 19:30 -0.9 m low tide 99 · Very high Excellent
26 Sat 100% illuminated · waxing Sunrise06:11 Sunset18:08 01:40 1.0 m high tide 07:50 -0.9 m low tide 13:50 0.9 m high tide 20:10 -1.1 m low tide 102 · Very high Excellent
27 Sun 99% illuminated · waning Sunrise06:13 Sunset18:05 02:10 1.0 m high tide 08:20 -1.0 m low tide 14:30 1.1 m high tide 20:50 -1.1 m low tide 101 · Very high Excellent
28 Mon 95% illuminated · waning Sunrise06:14 Sunset18:03 02:50 0.9 m high tide 08:50 -1.0 m low tide 15:00 1.2 m high tide 21:30 -1.2 m low tide 95 · Very high Excellent
29 Tue 89% illuminated · waning Sunrise06:16 Sunset18:01 03:30 0.8 m high tide 09:20 -1.0 m low tide 15:40 1.3 m high tide 22:20 -1.1 m low tide 84 · High Excellent
30 Wed 81% illuminated · waning Sunrise06:17 Sunset17:59 04:10 0.7 m high tide 10:00 -1.0 m low tide 16:30 1.3 m high tide 23:00 -1.0 m low tide 71 · High Good

Biggest tides: 9–12 Sep (coef 104) · Quietest stretch: 18–19 Sep (coef 20) · Morning 41 · afternoon 48. Predicted levels run between -1.2 m and 1.3 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 Rivière-au-Tonnerre local time, with daylight saving already applied.

Nearby

Other tide stations close to Rivière-au-Tonnerre, ranked by distance.

Fishing sites near Rivière-au-Tonnerre

this station in gold · nearby stations in green

Map data © OpenStreetMap contributors.

All Quebec locations

Québec Lévis Chicoutimi Rimouski Sept-Îles Baie-Comeau Rivière-du-Loup Saint-Augustin-de-Desmaures Gaspé Cap-aux-Meules Saint Romuald Hauterive La Malbaie Boischatel Chandler Donnacona Baie-Saint-Paul Port-Cartier Sainte-Anne-des-Monts Saint-Augustin Neuville St-Jean-Port-Joli Trois Pistoles Portneuf Forestville Les Escoumins Saint-Siméon Harrington Harbour Port-Menier Baie de Brador

Frequently asked questions

Tides, coefficients and fishing times for Rivière-au-Tonnerre, explained.

What time is high tide in Rivière-au-Tonnerre today?

High water at Rivière-au-Tonnerre today is at 08:00 and 20:50. 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 Rivière-au-Tonnerre?

Based on solunar theory the fishing rating today is Fair. 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 48 (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 Rivière-au-Tonnerre today?

The sun rises at 05:39 and sets at 18:54 local time, giving 13h 15m of daylight.

What is the water temperature in Rivière-au-Tonnerre today?

The sea surface at Rivière-au-Tonnerre is around 14.5°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 Rivière-au-Tonnerre today?

The significant wave height at Rivière-au-Tonnerre is currently 0.7 m with a period of 4.7 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. · 51.254.44.216/ca/quebec/riviere-au-tonnerre