AI-generatedSept-Îles at a glance
- Best time
- Jun – Aug
- Warmest month
- Jul · 20°
- Warmest sea
- Aug · 14.4°
- Sunshine a year
- 2,040 h
- Rain a year
- 1,058 mm
- Climate
- Continental
- Time zone
- UTC−5 / UTC−4
- Elevation
- 5 m
Climate in Sept-Îles
Sept-Îles has mild to warm summers and cold winters with occasional snow. July is the warmest month with average highs of 20 °C, while January is the coolest at −8 °C. With around 2,040 hours of sunshine a year, Sept-Îles is moderately sunny; June is the sunniest month with 7.7 hours a day.
Holiday weather through the year
Best time to visit Sept-Îles
The best time to visit Sept-Îles is from June to August. The sea stays too cool for a classic beach holiday: even in August it only reaches 14.4 °C. For sightseeing, day trips and hiking, conditions are most comfortable in June and in September. Rain is frequent from October to November; the wettest month is October with 112 mm.
Sept-Îles through the seasons
How the weather changes over the seasons, with averages for each.
Sept-Îles in spring
Mar – May
Poor
- −1–11 °C by day
- Sea 2 °C
- 6.7 h of sun a day
- 33 rainy days in all
Sept-Îles in summer
Jun – Aug
Good
- 17–20 °C by day
- Sea 13 °C
- 7.4 h of sun a day
- 37 rainy days in all
Sept-Îles in autumn
Sep – Nov
Poor
- 2–15 °C by day
- Sea 7 °C
- 4.4 h of sun a day
- 37 rainy days in all
Sept-Îles in winter
Dec – Feb
Poor
- −8–−4 °C by day
- Sea 0 °C
- 3.9 h of sun a day
- 32 rainy days in all
Which month for what?
Beach & swimming
No month
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Jun, Sep
15–28 °C and not too much rain
Rainy months
Oct – Nov
Rainy season or more than 12 rainy days
Snow
Nov – Apr
Snow on 2 or more days
Find your perfect month
Tell us what you like and we rate every month in Sept-Îles for you.
Your best months: July – August
Based on the climate averages; tap a month to see its details.
Weather in October
Weather in October
Holiday weather in October
Poor
Best time to visit: June – August
Where to go in OctoberSea temperature in October
Keep in mindFrequent rain
A typical day in October
- Morning, 08:00: about 3°
- Midday, 13:00: about 9°
- Afternoon, 16:00: about 8°
- Evening, 20:00: about 5°
- Night, 23:00: about 3°
06:4617:37
Cold evenings: bring a warm jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 06:26–07:30 · evening 16:52–17:57
- Blue hour
- Morning 06:13–06:26 · evening 17:57–18:09
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
October in Sept-Îles compared with home
Loading the climate at home …
Early or late October?
In October, daytime highs fall from about 12° at the start of the month to 5° at the end. The sea cools from 9° to 5°. The days get 1.8 h shorter.
| October | 1 Oct | 31 Oct |
|---|---|---|
| Daytime high | 12° | 5° |
| Night-time low | 3° | −3° |
| Sea | 9° | 5° |
| Daylight | 11.7 h | 9.9 h |
What is the weather like in Sept-Îles in October?
In October, Sept-Îles is cold: daytime highs average 9 °C, and nights cool down to about 1 °C. The sea averages 7.1 °C – swimming is only for the hardy. Expect around 4.1 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 112 mm in total. Snow falls on about 2 days. All in all, October is not an ideal month for a holiday in Sept-Îles.
More details for October
- Daylight
- 10 h 51 min06:46 – 17:37
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 19 km/haverage daily peakAll months
- Cloud cover
- 66 %on averageAll months
- Hot days
- 0 days30 °C or more
- Snow days
- 2 days1 cm or more of fresh snowAll months
- Time zone
- UTC−4offset from UTC
How the score comes together
- Temperatureweight 50 %10 %
- Sunshineweight 20 %18 %
- Few rainy daysweight 30 %41 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Warm jacket
- Rain jacket or umbrella
Compare two months in Sept-Îles
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
June has the better holiday weather in Sept-Îles: score 75 against 21. In June, days are 8 °C warmer than in October. The sea is 3 °C warmer in June. The sun shines 4 hours longer a day in June.
| Month | October | June |
|---|---|---|
| Holiday weather score | 21 | 75better |
| Daytime high | 9° | 17° |
| Night-time low | 1° | 7° |
| Sea | 7.1° | 9.9° |
| Sunshine | 4.1 h | 7.7 hbetter |
| Rainy days | 12 | 12 |
| Rainfall | 112 mm | 81 mmbetter |
Based on the climate averages 1996–2025.
Sept-Îles month by month
The typical weather for every month at a glance.
18January−8° · Sea 0° · 3.7 h
In January, Sept-Îles is bitterly cold: daytime highs average −8 °C, and nights often drop below freezing (−20 °C). The sea averages −0.3 °C – swimming is only for the hardy. The sun is scarce, with only about 3.7 hours a day. Precipitation falls on about 11 days, totalling 68 mm; on about 9 of them it snows. All in all, January is not an ideal month for a holiday in Sept-Îles.
Sept-Îles in January25February−7° · Sea 0° · 4.8 h
In February, Sept-Îles is bitterly cold: daytime highs average −7 °C, and nights often drop below freezing (−19 °C). The sea averages −0.5 °C – swimming is only for the hardy. Expect around 4.8 hours of sunshine a day. Precipitation falls on about 9 days, totalling 56 mm; on about 8 of them it snows. All in all, February is not an ideal month for a holiday in Sept-Îles.
Sept-Îles in February25March−1° · Sea −1° · 5.8 h
In March, Sept-Îles is bitterly cold: daytime highs average −1 °C, and nights often drop below freezing (−12 °C). The sea averages −0.6 °C – swimming is only for the hardy. Expect around 5.8 hours of sunshine a day. Precipitation falls on about 11 days, totalling 78 mm; on about 9 of them it snows. All in all, March is not an ideal month for a holiday in Sept-Îles.
Sept-Îles in March28April5° · Sea 1° · 6.7 h
In April, Sept-Îles is cold: daytime highs average 5 °C, and nights often drop below freezing (−4 °C). The sea averages 0.7 °C – swimming is only for the hardy. The sun shines for around 6.7 hours a day. Rain is frequent, with about 11 rainy days and 84 mm in total. Snow falls on about 7 days. All in all, April is not an ideal month for a holiday in Sept-Îles.
Sept-Îles in April46May11° · Sea 5° · 7.6 h
In May, Sept-Îles is cool: daytime highs average 11 °C, and nights cool down to about 2 °C. The sea averages 4.9 °C – swimming is only for the hardy. The sun shines for around 7.6 hours a day. Rain is frequent, with about 12 rainy days and 83 mm in total. All in all, May is a so-so month for a holiday in Sept-Îles.
Sept-Îles in May75June17° · Sea 10° · 7.7 h
In June, Sept-Îles is mild: daytime highs average 17 °C, and nights cool down to about 7 °C. The sea averages 9.9 °C – swimming is only for the hardy. The sun shines for around 7.7 hours a day. Rain is frequent, with about 12 rainy days and 81 mm in total. All in all, June is a good month for a holiday in Sept-Îles.
Sept-Îles in June75July20° · Sea 14° · 7.5 h
In July, Sept-Îles is mild: daytime highs average 20 °C, and nights cool down to about 11 °C. The sea averages 13.8 °C – swimming is only for the hardy. The sun shines for around 7.5 hours a day. Rain is frequent, with about 13 rainy days and 100 mm in total. All in all, July is a good month for a holiday in Sept-Îles.
Sept-Îles in July75August20° · Sea 14° · 6.9 h
In August, Sept-Îles is mild: daytime highs average 20 °C, and nights cool down to about 10 °C. The sea averages 14.4 °C – swimming is only for the hardy. The sun shines for around 6.9 hours a day. Rain is frequent, with about 12 rainy days and 92 mm in total. All in all, August is a good month for a holiday in Sept-Îles.
Sept-Îles in August59September15° · Sea 11° · 5.8 h
In September, Sept-Îles is cool: daytime highs average 15 °C, and nights cool down to about 5 °C. The sea averages 11.0 °C – swimming is only for the hardy. Expect around 5.8 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 100 mm in total. All in all, September is a so-so month for a holiday in Sept-Îles.
Sept-Îles in September21October9° · Sea 7° · 4.1 h
In October, Sept-Îles is cold: daytime highs average 9 °C, and nights cool down to about 1 °C. The sea averages 7.1 °C – swimming is only for the hardy. Expect around 4.1 hours of sunshine a day. Rain is frequent, with about 12 rainy days and 112 mm in total. Snow falls on about 2 days. All in all, October is not an ideal month for a holiday in Sept-Îles.
Sept-Îles in October13November2° · Sea 4° · 3.3 h
In November, Sept-Îles is bitterly cold: daytime highs average 2 °C, and nights often drop below freezing (−6 °C). The sea averages 3.9 °C – swimming is only for the hardy. The sun is scarce, with only about 3.3 hours a day. Precipitation falls on about 12 days, totalling 103 mm; on about 7 of them it snows. All in all, November is not an ideal month for a holiday in Sept-Îles.
Sept-Îles in November14December−4° · Sea 1° · 3.1 h
In December, Sept-Îles is bitterly cold: daytime highs average −4 °C, and nights often drop below freezing (−14 °C). The sea averages 1.2 °C – swimming is only for the hardy. The sun is scarce, with only about 3.1 hours a day. Precipitation falls on about 12 days, totalling 100 mm; on about 10 of them it snows. All in all, December is not an ideal month for a holiday in Sept-Îles.
Sept-Îles in DecemberClimate in detail
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Sept-Îles
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Frost below 0°
- Cold 0–8°
- Cool 8–15°
ColdOctober: nights around 1°. The room should be heated.
The coolest nights are in January (−20°), the warmest in July (11°). Nights fall below 8 °C on average from September to June, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sea | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|---|
| JanuaryJan | 18 | −8° | −20° | −0.3° | 3.7 h | 11 | 68 |
| FebruaryFeb | 25 | −7° | −19° | −0.5° | 4.8 h | 9 | 56 |
| MarchMar | 25 | −1° | −12° | −0.6° | 5.8 h | 11 | 78 |
| AprilApr | 28 | 5° | −4° | 0.7° | 6.7 h | 11 | 84 |
| MayMay | 46 | 11° | 2° | 4.9° | 7.6 h | 12 | 83 |
| JuneJun | 75 | 17° | 7° | 9.9° | 7.7 h | 12 | 81 |
| JulyJul | 75 | 20° | 11° | 13.8° | 7.5 h | 13 | 100 |
| AugustAug | 75 | 20° | 10° | 14.4° | 6.9 h | 12 | 92 |
| SeptemberSep | 59 | 15° | 5° | 11.0° | 5.8 h | 12 | 100 |
| OctoberOct | 21 | 9° | 1° | 7.1° | 4.1 h | 12 | 112 |
| NovemberNov | 13 | 2° | −6° | 3.9° | 3.3 h | 12 | 103 |
| DecemberDec | 14 | −4° | −14° | 1.2° | 3.1 h | 12 | 100 |
Climate averages 1996–2025 (sunshine partly WMO station normals 1991–2020), not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
50.20° N, 66.38° W · 5 m · America/Toronto
Sea temperature in Sept-Îles
Monthly sea surface temperature with the range of cooler and warmer years.
8 in 10 years: 5.4 – 8.7 °C
Swimming season: Always below 20 °C
- cold
- fresh
- refreshing
- pleasant
- warm
- very warm
The sea temperature in Sept-Îles ranges from −0.6 °C in March to 14.4 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
The sea warms up slowly: it is warmest in August, while the air already peaks in July. From November to March the sea is even warmer than the afternoon air. The sea temperature varies from year to year: in August, eight out of ten years were between 12.9 and 15.9 °C.
| Month | Average | Cool year | Warm year | Feels |
|---|---|---|---|---|
| JanuaryJan | −0.3° | −0.9° | 0.2° | cold |
| FebruaryFeb | −0.5° | −1.3° | −0.1° | cold |
| MarchMar | −0.6° | −1.1° | 0.0° | cold |
| AprilApr | 0.7° | 0.0° | 1.4° | cold |
| MayMay | 4.9° | 3.7° | 6.2° | cold |
| JuneJun | 9.9° | 8.9° | 11.0° | cold |
| JulyJul | 13.8° | 12.8° | 15.2° | cold |
| AugustAug | 14.4° | 12.9° | 15.9° | cold |
| SeptemberSep | 11.0° | 9.5° | 12.1° | cold |
| OctoberOct | 7.1° | 5.4° | 8.7° | cold |
| NovemberNov | 3.9° | 2.7° | 5.2° | cold |
| DecemberDec | 1.2° | 0.5° | 2.5° | cold |
Sunshine hours in Sept-Îles
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 4.1 of 10.8 hours of daylight in Sept-Îles, 38 % of the daylight hours.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
Rain in Sept-Îles: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Sept-Îles has about 12 rainy days with 112 mm of rain in total.
UV index in Sept-Îles
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 8).
Minutes until sunburn in October
- Very fair skin
- about 65 min
- Fair skin
- about 80 min
- Light brown skin
- about 110 min
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen the time, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Wind and clouds in Sept-Îles
How breezy and how cloudy Sept-Îles is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Sept-Îles typically peaks at 19 km/h during the day: Beaufort 3, gentle breeze.
Breezy months for windsurfing and kiting
From Beaufort 4 (20 km/h) the daily breeze is usually enough for windsurfing and often for kiting: Nov – Apr.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 66 % of the sky over Sept-Îles: mostly cloudy, with about 4.1 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Snow in Sept-Îles
When Sept-Îles is likely to be white: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, Sept-Îles has about 2 days with at least 1 cm of fresh snow, 7 cm in total. The chance of seeing snow during a week's stay is 23 out of 100: possible.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Planning a trip to Sept-Îles
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Sept-Îles in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Sept-Îles has its best school-holiday weather during the summer holidays (score 75) and its weakest during the Christmas holidays (score 16).
- 27
Easter holidays
Mar – Apr
Poor
- 3 °C by day
- Sea 0 °C
- 6.4 h of sun a day
- 11 rainy days a month
Keep in mind: Snow
- 52
May half-term
May – Jun
Fair
- 13 °C by day
- Sea 6 °C
- 7.6 h of sun a day
- 12 rainy days a month
- 75
Summer holidays
Jul – Aug
GoodBest holidays
- 20 °C by day
- Sea 14 °C
- 7.1 h of sun a day
- 13 rainy days a month
- 21
October half-term
Oct
Poor
- 9 °C by day
- Sea 7 °C
- 4.1 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain
- 16
Christmas holidays
Dec – Jan
Poor
- −6 °C by day
- Sea 0 °C
- 3.4 h of sun a day
- 11 rainy days a month
Keep in mind: Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 5 h 55 min
- Distance
- 4,470 km
- Time zone
- UTC−4
- Jet lag
- About 3 days (5 h west)
Rule of thumb for flying west: for a few days before, stay up a little later, and get afternoon and evening light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Compare & alternatives
Sept-Îles compared
Put Sept-Îles side by side with another destination.
Sept-Îles vs Baie-Comeau
In October Baie-Comeau has the better holiday weather (score 26 vs 21). During the day Baie-Comeau is 1 °C warmer than Sept-Îles. The sea is about equally warm.
| in October | Sept-Îles | Baie-Comeau |
|---|---|---|
| Holiday weather score | 21 | 26 |
| Daytime high | 9° | 10° |
| Sea | 7° | 7° |
| Sunshine | 4 h | 4 h |
| Rainy days | 12 | 12 |
| Best time | Jun – Aug | Jun – Sep |
Through the year
Canada in October: the best places
In October, Sept-Îles ranks 19 among the 31 nearest destinations in this country.
- St. Andrews14°12°57
- 2Wolfville14°13°54
- 3Digby14°12°51
- 4Antigonish15°50
- 5Miramichi13°49
- 6Saint John14°12°49
- 7Fredericton13°47
- 8Trois-Rivières14°47
- 19Sept-ÎlesThis page9°7°21
Near Sept-Îles
Other destinations close by.
Places with a climate like Sept-Îles
Destinations whose weather through the year is closest to Sept-Îles's – good alternatives.
Frequently asked questions about Sept-Îles
When is the best time to visit Sept-Îles?
The best time to visit Sept-Îles is from June to August. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
How warm is the sea in Sept-Îles?
The sea temperature in Sept-Îles ranges from −0.6 °C in March to 14.4 °C in August. Even at its warmest the sea stays below 20 °C, so swimming is bracing at best.
Can you swim in Sept-Îles in October?
Only if you don't mind cold water: in October the sea averages just 7.1 °C. Comfortable swimming temperatures are not reached at any time of year.
What is the warmest month in Sept-Îles?
July is the warmest month, with average highs of 20 °C and nights around 11 °C. January is the coolest month at −8 °C.
When does it rain most in Sept-Îles?
Rain is frequent from October to November; the wettest month is October with 112 mm. The driest month is February with 56 mm.
How many hours of sunshine does Sept-Îles get?
Sept-Îles gets around 2,040 hours of sunshine a year. The sunniest month is June with 7.7 hours a day; in December there are 3.1 hours a day.
What time zone is Sept-Îles in?
Sept-Îles is on UTC−5 in January and UTC−4 in July.
How long is the flight from London to Sept-Îles?
A nonstop flight from London to Sept-Îles takes about 5 h 55 min, for a straight-line distance of about 4,470 km.
Which school holidays are best for Sept-Îles?
Sept-Îles has its best school-holiday weather during the summer holidays (score 75) and its weakest during the Christmas holidays (score 16). Holiday ratings (0–100): Easter holidays 27, May half-term 52, summer holidays 75, October half-term 21, Christmas holidays 16.