Sept-Îles Weather in October (1981–2025)

📍 50.22°N, 66.38°W •
📊

October at a Glance in Sept-Îles

(1981–2025)
Avg High
🔥
7.4°C
Avg Low
❄️
4.3°C
Avg Temp
🌡️
5.9°C
Avg Rain
🌧️
104 mm
Avg Humidity
💧
83%
Avg Wind
🌬️
3.7 m/s
Avg Solar
☀️
1.9
kWh/m²/day
vs Annual
📈
+3.4°C
temp difference
❄️Cold afternoons❄️Cold mornings☁️Cloudier skies🌧️Wet month💨Breezy💦Humid air

Sept-Îles October Weather Overview

October is one of the warmer months of the year in Sept-Îles, with average highs near 7.4°C and lows around 4.3°C (mean 5.9°C). It is a relatively wet time of year, averaging 104 mm of rainfall and 83% relative humidity across the period.

Sept-Îles October Temperature History (1981–2025)

Range

October is one of the warmer months of the year in Sept-Îles. Across 45 years of records, the warmest October in Sept-Îles was 2023 — when the month averaged 9.7°C — while the coldest was 1993 at 2.9°C. Typical October days reach 7.4°C with nights near 4.3°C. The long-term trend is warming, about 0.6°C per decade.

1981–1985 vs 2021–2025

Avg Temp5.2°C→8.3°C+3.1°C
Max Temp7.0°C→9.9°C+2.9°C
Min Temp3.4°C→6.8°C+3.4°C

Trend (per decade)

Avg Temp+0.6°C/decade ↗
Max Temp+0.6°C/decade ↗
Min Temp+0.7°C/decade ↗

Distribution of Avg Temp

2.0°C–4.0°C4 yr (9%)
4.0°C–6.0°C21 yr (47%)
6.0°C–8.0°C18 yr (40%)
8.0°C–10.0°C2 yr (4%)

Sept-Îles October Rainfall History (1981–2025)

Range

October is a relatively wet time of year in Sept-Îles, averaging 104 mm of rainfall. The wettest October on record was 1991 with 196 mm, while the driest was 1984 at 30 mm.

Sept-Îles October Humidity History (1981–2025)

Range

Relative humidity in Sept-Îles during October averages 83%. The most humid October was 2022 at 88%, and the least humid was 2015 at 78%.

Sept-Îles October Solar History (1981–2025)

Range

October receives about 1.9 kWh/m²/day of solar energy in Sept-Îles. The sunniest October was 1984 at 2.3 kWh/m²/day, and the cloudiest were 1992 and 1995 at 1.5.

Sept-Îles October Wind History (1981–2025)

Range

Average wind speed in Sept-Îles during October is 3.7 m/s. The windiest October was 1999 at 4.6 m/s, while the calmest was 1984 at 2.8 m/s.

What October Feels Like in Sept-Îles

🌅
Cold
Morning
🌞
Cold
Afternoon
🌆
Cold
Evening
Rain chanceHigh
Outdoor comfort★★☆☆☆

How October Ranks in Sept-Îles

🔥5th warmest month of the year
🌧️1st wettest month of the year
☀️9th sunniest month of the year

Ranked against the other 11 months using 1981–2025 averages.

Explore Sept-Îles Weather by Month

Sept-Îles October Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp4.9°C5.3°C5.9°C6.4°C7.7°C+2.8°C
Avg High6.6°C6.8°C7.4°C7.9°C9.2°C+2.6°C
Avg Low3.2°C3.8°C4.4°C4.8°C6.2°C+3°C
Avg Rain90 mm125 mm117 mm85 mm99 mm+9 mm

Extreme October Records in Sept-Îles

🔥Warmest October16.4°C2023
🧊Coldest October-5.3°C1986
🌧️Wettest October196 mm1991
🏜️Driest October30 mm1984
🌬️Windiest October4.6 m/s1999

Key Insights for October

✅

October temperatures in Sept-Îles have risen by about 3.1°C between 1981–1985 and 2021–2025.

✅

October has ranged from a record low of -5.3°C (1986) to a record high of 16.4°C (2023).

✅

Rainfall in October is a relatively wet time of year, averaging 104 mm, with a wettest year of 196 mm.

Is October a Good Time to Visit Sept-Îles?

A good time to visit Sept-Îles

October is a good time to visit Sept-Îles, with days averaging 7.4°C and nights around 4.3°C (mean 5.9°C, warmer than Sept-Îles's yearly average) and higher rainfall. August and July are marginally more temperate, but October still suits most travellers.

See Sept-Îles's complete weather history All 12 months side by side, 1981–2025 records, annual trends and long-term averages in one place. View full history →

Sept-Îles Weather in October — In Depth

☀️ October climate overview

October is one of the warmer months of the year in Sept-Îles, with average highs near 7.4°C and lows around 4.3°C (mean 5.9°C). It is a relatively wet time of year, averaging 104 mm of rainfall and 83% relative humidity across the period.

🌧️ Rain, humidity & wind in October

October averages 104 mm of rainfall in Sept-Îles, a relatively wet time of year compared with the rest of the year. The wettest October on record saw 196 mm (1991), and the driest just 30 mm (1984). Humidity sits around 83% and average wind speed is 3.7 m/s, with solar radiation averaging 1.9 kWh/m²/day.

📈 How October has changed

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 3.1°C. Daytime highs moved from 7°C to 9.9°C and overnight lows from 3.4°C to 6.8°C over the same span.
October Weather in Sept-Îles, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
20259.0°C7.4°C5.8°C13.4°C2.5°C61 mm86%3 m/s2
20249.5°C7.9°C6.2°C13.3°C0.3°C138 mm82%4.2 m/s1.9
2023 🔥11.1°C9.7°C8.4°C16.4°C1.6°C72 mm84%3.8 m/s1.8
20229.0°C7.5°C6.0°C11.6°C3.4°C100 mm88%3.4 m/s1.9
202110.8°C9.2°C7.7°C15.9°C3.2°C107 mm84%3 m/s2.1
20206.0°C4.5°C3.1°C10.1°C-2.8°C118 mm83%3.7 m/s1.8
20198.1°C6.5°C4.8°C10.2°C2.3°C52 mm83%3.5 m/s2.1
20184.9°C3.3°C1.7°C11.1°C-3.6°C65 mm80%4.3 m/s1.8
20179.2°C7.4°C5.6°C13.4°C0.3°C104 mm83%3.9 m/s2
20168.7°C7.1°C5.5°C14.8°C-1.2°C136 mm81%3.9 m/s2.1
20156.7°C5.1°C3.5°C11.6°C-0.5°C65 mm78%4.1 m/s2.1
20148.3°C6.9°C5.4°C11.3°C1.8°C86 mm85%3.7 m/s2.1
20138.8°C7.3°C5.8°C14.1°C-1.2°C59 mm81%3.5 m/s1.9
20127.7°C6.4°C5.0°C13.5°C0.3°C104 mm85%3.8 m/s1.7
20118.5°C7.0°C5.6°C15.5°C0.5°C62 mm83%3.6 m/s2
20107.9°C6.5°C5.1°C14.9°C2.1°C123 mm83%4.4 m/s1.8
20096.5°C5.1°C3.7°C10.9°C-3.0°C126 mm78%3.9 m/s1.8
20087.8°C6.3°C4.8°C11.0°C0.1°C126 mm83%3.6 m/s2
20078.5°C6.7°C5.0°C13.1°C1.0°C108 mm84%3.5 m/s2.1
20067.2°C5.8°C4.3°C11.6°C1.8°C168 mm84%4.3 m/s2
20058.2°C6.8°C5.4°C14.1°C2.0°C92 mm85%3.5 m/s1.7
20048.1°C6.8°C5.4°C11.0°C2.1°C86 mm85%3.1 m/s2.1
20037.8°C6.2°C4.6°C12.7°C0.6°C149 mm84%4.1 m/s1.9
20025.9°C4.4°C2.9°C12.7°C-1.5°C82 mm81%3.8 m/s2
20017.3°C5.9°C4.5°C12.8°C0.0°C169 mm87%3.8 m/s1.7
20006.4°C4.8°C3.2°C9.6°C-0.5°C68 mm83%3.7 m/s1.9
19996.5°C4.9°C3.3°C12.4°C-0.4°C125 mm79%4.6 m/s2
19987.2°C5.7°C4.3°C10.4°C1.2°C128 mm83%4.1 m/s1.8
19976.9°C5.6°C4.3°C10.7°C-0.1°C32 mm82%3.6 m/s1.9
19966.8°C5.2°C3.5°C13.3°C-1.1°C105 mm83%4.1 m/s2
19957.6°C6.2°C4.9°C12.0°C1.0°C162 mm87%3.8 m/s1.5
19948.9°C7.4°C5.9°C12.6°C2.7°C60 mm84%3.3 m/s1.8
1993 ❄️4.5°C2.9°C1.3°C8.0°C-3.0°C179 mm83%4 m/s1.7
19926.1°C4.5°C3.0°C9.9°C-1.8°C103 mm82%3.9 m/s1.5
1991 🌧️7.2°C5.6°C4.1°C10.3°C-1.2°C196 mm86%3.5 m/s1.6
19906.1°C4.5°C2.9°C10.5°C-3.2°C158 mm83%3.7 m/s1.8
19895.6°C3.9°C2.3°C10.5°C-1.4°C90 mm85%3.2 m/s2.1
19886.3°C4.7°C3.2°C11.0°C-0.1°C162 mm83%3.8 m/s2
19876.9°C5.4°C3.8°C11.2°C0.5°C109 mm84%3.5 m/s2
19865.9°C3.9°C2.0°C10.4°C-5.3°C66 mm79%3.6 m/s2.1
19856.5°C4.8°C3.1°C11.2°C-4.1°C97 mm80%4.1 m/s2
19846.0°C4.2°C2.4°C11.1°C-0.6°C30 mm82%2.8 m/s2.3
19837.4°C5.8°C4.3°C12.7°C-1.1°C71 mm81%3.8 m/s—
19827.6°C5.7°C3.8°C12.7°C-0.4°C43 mm82%3.6 m/s—
19817.3°C5.4°C3.6°C11.2°C-1.4°C147 mm81%3.9 m/s—

Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.

Other Cities in Quebec

Sept-Îles October Weather — FAQ

What is the average temperature in Sept-Îles in October?▼

The average high in October is around 7.4°C with lows near 4.3°C (mean 5.9°C), based on 45 years of NASA POWER data.

Does it rain a lot in Sept-Îles in October?▼

October averages 104 mm of rainfall in Sept-Îles, a relatively wet time of year. The wettest on record was 196 mm in 1991.

What was the hottest October on record in Sept-Îles?▼

The hottest October reached 16.4°C in 2023. The coldest dipped to -5.3°C in 1986.

Has October in Sept-Îles gotten warmer over time?▼

Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 3.1°C. Daytime highs moved from 7°C to 9.9°C and overnight lows from 3.4°C to 6.8°C over the same span.

Is October a good time to visit Sept-Îles?▼

October is one of the warmer months of the year in Sept-Îles and a relatively wet time of year, so plan for around 7.4°C daytime highs and 4.3°C at night.

Is October the coldest month in Sept-Îles?▼

Not quite — October is the 8th coolest month in Sept-Îles, averaging 5.9°C.

What should I pack for Sept-Îles in October?▼

For October in Sept-Îles, pack warm layers and a jacket for chilly mornings, with typical highs of 7.4°C and lows of 4.3°C. Bring an umbrella or light rain jacket too.

Is Sept-Îles humid in October?▼

Relative humidity in October averages 83% — quite humid.

How windy is Sept-Îles in October?▼

Average wind speed in October is 3.7 m/s. The windiest October on record averaged 4.6 m/s (1999).

Which October had the most rainfall in Sept-Îles?▼

The wettest October on record was 1991 with 196 mm. On average, October sees 104 mm.

Where does this October weather data come from?▼

All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.

Other Quebec cities

Explore how the weather in Sept-Îles behaves each October, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for October specifically, along with year-by-year records and how the month has changed over the decades.