Sept-Îles in Fall
In fall (September, October and November), Sept-Îles sees average daytime highs around 8°C and overnight lows near 1°C, with 319 mm of precipitation over about 37 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 18°C in early September to -2°C by late November. The sky is clear or mostly clear about 21% of the time across fall, and the air most often feels dry.
Fall is Sept-Îles's 2nd-best season to visit on our travel score. For the whole year in context, see Sept-Îles's year-round climate.
- Avg daytime high
- 8°C
- 2nd-warmest season
- Avg overnight low
- 1°C
- Precipitation
- 319 mm
- 37 wet days
- Avg wind
- 13 km/h
- Travel score
- 1.9
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Sept-Îles in Fall
Over the season highs ease from about 18°C in early September to -2°C by late November.
A typical fall day in Sept-Îles reaches about 8°C and drops to 1°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Sept-Îles
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 56 that feel at or below 0°C.
The story in fall is cold — wind chill drags the overnight "feels like" below the raw low.
Sept-Îles weather by month
How the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | -10° / -19° | 69 | 10.4 | 11.1 | 8.3 | 0.0 |
| Feb | -8° / -18° | 54 | 8.7 | 9.3 | 9.7 | 0.0 |
| Mar | -2° / -11° | 75 | 10.3 | 10.2 | 11.5 | 0.0 |
| Apr | 4° / -4° | 82 | 10.6 | 7.8 | 13.5 | 0.2 |
| May | 12° / 2° | 85 | 11.4 | 1.9 | 15.2 | 2.8 |
| Jun | 18° / 9° | 81 | 11.6 | 0 | 16.1 | 5.4 |
| Jul | 21° / 12° | 102 | 13.5 | 0 | 15.7 | 5.8 |
| Aug | 20° / 11° | 93 | 12.4 | 0 | 14.3 | 5.9 |
| Sep | 15° / 7° | 103 | 12.2 | 0.1 | 12.4 | 4.3 |
| Oct | 8° / 1° | 113 | 12.4 | 2.8 | 10.5 | 1.3 |
| Nov | 1° / -6° | 103 | 12.2 | 8.6 | 8.8 | 0.0 |
| Dec | -6° / -14° | 95 | 11.6 | 12 | 7.9 | 0.0 |
Cloud cover in Fall
The sky is clear or mostly clear about 21% of the time across fall.
Chance of precipitation in Fall
Sept-Îles gets around 319 mm of rain and snow over 37 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 13 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 h 18 min in early September to 8 h 12 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 2.2 kWh/m².
Is fall a good time to visit Sept-Îles?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a weaker month for outdoor sightseeing in Sept-Îles.
What to pack for Sept-Îles in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Sept-Îles sees daytime highs around 8°C and nights near 1°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 37 days see rain.
Sea temperature near Sept-Îles in Fall
The nearest coast averages about 7°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 14°C and coldest in February near -1°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 0 | 0 | 0 | 1 | 5 | 10 | 14 | 14 | 11 | 7 | 4 | 1 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 0 | Bracing |
| Feb | 0 | Bracing |
| Mar | 0 | Bracing |
| Apr | 1 | Bracing |
| May | 5 | Bracing |
| Jun | 10 | Bracing |
| Jul | 14 | Bracing |
| Aug | 14 | Bracing |
| Sep | 11 | Bracing |
| Oct | 7 | Bracing |
| Nov | 4 | Bracing |
| Dec | 1 | Bracing |
UV index in Sept-Îles in Fall
Clear-sky midday UV across fall averages around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sept-Îles peaks around July 9 at about 6 (high) — a little sun protection helps at midday. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 5 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 3 | 4 | 5 | 6 | 6 | 2 | 4 | 2 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | Moderate | High | High | Low | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 3 | Moderate |
| Apr | 4 | Moderate |
| May | 5 | Moderate |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 2 | Low |
| Sep | 4 | Moderate |
| Oct | 2 | Low |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Sept-Îles in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Sept-Îles is worst in June — around 24 µg/m³ PM2.5 (moderate), about 15.2× the cleanest month (December, 2 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 2 | 4 | 7 | 7 | 10 | 24 | 9 | 9 | 6 | 3 | 2 | 2 |
| Level | Good | Good | Good | Good | Good | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 2 | Good |
| Feb | 4 | Good |
| Mar | 7 | Good |
| Apr | 7 | Good |
| May | 10 | Good |
| Jun | 24 | Moderate |
| Jul | 9 | Good |
| Aug | 9 | Good |
| Sep | 6 | Good |
| Oct | 3 | Good |
| Nov | 2 | Good |
| Dec | 2 | Good |
Where is Sept-Îles?
Sept-Îles sits at 50.2°N, 66.4°W, 5 m above sea level, in Canada. The nearest listed city is Baie-Comeau, 168 km away.
Topography around Sept-Îles
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sept-Îles.
Within 3 km, the terrain around Sept-Îles has only modest variations in elevation — a maximum elevation change of 42 m around an average of 6 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 370 m; within 80 km, large variations in elevation — a maximum elevation change of 1,000 m.
The land around Sept-Îles is covered by water (54%) and artificial surfaces (22%) within 3 km, water (52%) and trees (38%) within 16 km, and trees (64%) and water (33%) within 80 km.
Canada travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 83% of US
- price level, 2025
- GDP per capita
- $55,698
- 2025
- Happiness
- 6.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 2
- per 100k, 2023
- Road deaths
- 5.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Sept-Îles (50.2001°, -66.3821°, elevation 5 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.