May is one of the warmer months of the year in Sept-Îles, with average highs near 7.8°C and lows around 3.9°C (mean 5.9°C). It is about average for rainfall, averaging 86 mm of rainfall and 84% relative humidity across the period.
May is one of the warmer months of the year in Sept-Îles. Across 45 years of records, the warmest Mays in Sept-Îles were 1998, 1999 and 2001 — when the month averaged 7.8°C — while the coldest was 2018 at 3.9°C. Typical May days reach 7.8°C with nights near 3.9°C. The long-term trend is warming, about 0.2°C per decade.
May is about average for rainfall in Sept-Îles, averaging 86 mm of rainfall. The wettest May on record was 1983 with 168 mm, while the driest was 2020 at 38 mm.
Relative humidity in Sept-Îles during May averages 84%. The most humid May was 1989 at 90%, and the least humid was 2020 at 77%.
May receives about 5.2 kWh/m²/day of solar energy in Sept-Îles. The sunniest May was 1992 at 6.2 kWh/m²/day, and the cloudiest was 1993 at 4.
Average wind speed in Sept-Îles during May is 2.9 m/s. The windiest May was 1983 at 3.6 m/s, while the calmest were 1989 and 2003 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.7°C | 5.7°C | 5.6°C | 6.1°C | 6.3°C | +0.6°C |
| Avg High | 7.7°C | 7.6°C | 7.5°C | 8.0°C | 8.5°C | +0.8°C |
| Avg Low | 3.8°C | 3.7°C | 3.8°C | 4.2°C | 4.2°C | +0.4°C |
| Avg Rain | 103 mm | 87 mm | 81 mm | 90 mm | 66 mm | -37 mm |
May temperatures in Sept-Îles have risen by about 1.3°C between 1981–1985 and 2021–2025.
May has ranged from a record low of -3.6°C (2004) to a record high of 19.8°C (2023).
Rainfall in May is about average for rainfall, averaging 86 mm, with a wettest year of 168 mm.
A good time to visit Sept-Îles
May is a good time to visit Sept-Îles, with days averaging 7.8°C and nights around 3.9°C (mean 5.9°C, warmer than Sept-Îles's yearly average) and higher rainfall. August and July are marginally more temperate, but May still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 8.9°C | 6.8°C | 4.7°C | 16.3°C | -0.6°C | 101 mm | 83% | 3.2 m/s | 5 |
| 2024 | 8.5°C | 6.9°C | 5.3°C | 16.1°C | 1.8°C | 42 mm | 87% | 2.5 m/s | 4.5 |
| 2023 | 9.4°C | 7.0°C | 4.7°C | 19.8°C | 1.2°C | 52 mm | 78% | 3.3 m/s | 5.6 |
| 2022 | 7.7°C | 5.4°C | 3.2°C | 13.6°C | -1.7°C | 93 mm | 82% | 2.9 m/s | 5.3 |
| 2021 | 8.1°C | 5.9°C | 3.8°C | 17.4°C | -0.2°C | 67 mm | 83% | 2.8 m/s | 4.6 |
| 2020 | 8.3°C | 5.9°C | 3.5°C | 16.0°C | -0.9°C | 38 mm | 77% | 3 m/s | 5.6 |
| 2019 | 7.3°C | 5.3°C | 3.4°C | 12.7°C | -3.6°C | 67 mm | 83% | 2.6 m/s | 5.3 |
| 2018 ❄️ | 6.1°C | 3.9°C | 1.7°C | 9.9°C | -2.2°C | 64 mm | 79% | 3.1 m/s | 5.9 |
| 2017 | 7.4°C | 5.9°C | 4.3°C | 12.0°C | -0.7°C | 137 mm | 86% | 3.2 m/s | 5.1 |
| 2016 | 9.0°C | 7.2°C | 5.3°C | 14.6°C | 1.1°C | 65 mm | 84% | 2.8 m/s | 5.3 |
| 2015 | 7.9°C | 5.8°C | 3.6°C | 14.6°C | 0.4°C | 82 mm | 82% | 2.9 m/s | 4.9 |
| 2014 | 8.1°C | 6.3°C | 4.5°C | 13.7°C | 0.5°C | 60 mm | 86% | 2.7 m/s | 4.6 |
| 2013 | 8.3°C | 6.6°C | 4.9°C | 15.4°C | 2.1°C | 78 mm | 84% | 2.9 m/s | 5.1 |
| 2012 | 8.7°C | 6.9°C | 5.2°C | 16.1°C | 1.0°C | 84 mm | 85% | 2.7 m/s | 5.3 |
| 2011 | 7.2°C | 5.6°C | 4.1°C | 12.6°C | 1.2°C | 154 mm | 86% | 2.8 m/s | 4.9 |
| 2010 | 9.5°C | 7.3°C | 5.1°C | 15.1°C | 2.7°C | 105 mm | 81% | 2.9 m/s | 4.8 |
| 2009 | 6.7°C | 4.8°C | 2.9°C | 11.4°C | -0.8°C | 83 mm | 82% | 2.9 m/s | 5.3 |
| 2008 | 8.5°C | 7.0°C | 5.4°C | 12.0°C | 1.1°C | 71 mm | 86% | 2.5 m/s | 4.9 |
| 2007 | 7.4°C | 5.3°C | 3.3°C | 11.7°C | 0.0°C | 40 mm | 79% | 2.8 m/s | 5.6 |
| 2006 | 9.1°C | 7.3°C | 5.6°C | 14.0°C | 1.0°C | 81 mm | 83% | 2.9 m/s | 5.3 |
| 2005 | 6.9°C | 5.5°C | 4.1°C | 12.7°C | -0.4°C | 80 mm | 87% | 2.6 m/s | 5.2 |
| 2004 | 6.2°C | 4.1°C | 2.0°C | 11.2°C | -3.6°C | 119 mm | 83% | 3.1 m/s | 5.1 |
| 2003 | 7.5°C | 5.5°C | 3.6°C | 15.1°C | -3.4°C | 73 mm | 84% | 2.4 m/s | 5.5 |
| 2002 | 6.2°C | 4.1°C | 2.0°C | 15.0°C | -2.6°C | 88 mm | 84% | 3 m/s | 4.8 |
| 2001 | 9.7°C | 7.8°C | 5.9°C | 19.7°C | 0.4°C | 58 mm | 86% | 2.5 m/s | 5.7 |
| 2000 | 6.3°C | 4.6°C | 2.8°C | 11.5°C | -1.5°C | 116 mm | 85% | 3 m/s | 5 |
| 1999 | 10.2°C | 7.8°C | 5.5°C | 16.9°C | 0.8°C | 56 mm | 84% | 2.8 m/s | 5.4 |
| 1998 🔥 | 9.7°C | 7.8°C | 5.9°C | 17.5°C | 0.9°C | 75 mm | 85% | 2.6 m/s | 5.1 |
| 1997 | 6.3°C | 4.5°C | 2.8°C | 12.1°C | -1.6°C | 164 mm | 86% | 3.2 m/s | 4.7 |
| 1996 | 6.5°C | 4.6°C | 2.7°C | 11.7°C | -0.4°C | 71 mm | 82% | 3.1 m/s | 5.3 |
| 1995 | 7.4°C | 5.7°C | 4.0°C | 11.6°C | 0.3°C | 51 mm | 87% | 2.6 m/s | 5.1 |
| 1994 | 7.0°C | 5.0°C | 3.0°C | 10.1°C | -2.8°C | 127 mm | 83% | 2.8 m/s | 5.7 |
| 1993 | 7.1°C | 5.4°C | 3.7°C | 13.1°C | -1.9°C | 106 mm | 86% | 3.1 m/s | 4 |
| 1992 | 7.9°C | 5.7°C | 3.4°C | 13.4°C | -2.5°C | 45 mm | 80% | 2.9 m/s | 6.2 |
| 1991 | 7.7°C | 5.3°C | 3.0°C | 13.4°C | -1.1°C | 75 mm | 81% | 3 m/s | 5.5 |
| 1990 | 6.6°C | 4.9°C | 3.2°C | 10.8°C | 0.4°C | 96 mm | 83% | 3 m/s | 5.4 |
| 1989 | 8.6°C | 6.6°C | 4.6°C | 16.3°C | 0.6°C | 106 mm | 90% | 2.4 m/s | 4.8 |
| 1988 | 9.3°C | 7.1°C | 4.9°C | 13.8°C | 2.5°C | 73 mm | 84% | 2.5 m/s | 5.2 |
| 1987 | 8.1°C | 5.6°C | 3.2°C | 15.0°C | -1.6°C | 72 mm | 81% | 2.9 m/s | 5 |
| 1986 | 9.0°C | 7.1°C | 5.2°C | 14.9°C | -2.2°C | 50 mm | 82% | 2.5 m/s | 5.8 |
| 1985 | 6.4°C | 4.4°C | 2.5°C | 10.2°C | -1.9°C | 115 mm | 82% | 2.8 m/s | 5.4 |
| 1984 | 7.6°C | 5.8°C | 3.9°C | 12.2°C | 0.7°C | 129 mm | 86% | 2.8 m/s | 4.2 |
| 1983 🌧️ | 6.3°C | 4.9°C | 3.4°C | 11.7°C | 1.0°C | 168 mm | 87% | 3.6 m/s | — |
| 1982 | 6.6°C | 4.6°C | 2.5°C | 11.6°C | -0.5°C | 56 mm | 84% | 2.9 m/s | — |
| 1981 | 7.5°C | 5.6°C | 3.8°C | 13.0°C | -0.5°C | 155 mm | 86% | 2.9 m/s | — |
Actual recorded May data for each year, 1981–2025 — sourced from NASA POWER.
The average high in May is around 7.8°C with lows near 3.9°C (mean 5.9°C), based on 45 years of NASA POWER data.
May averages 86 mm of rainfall in Sept-Îles, about average for rainfall. The wettest on record was 168 mm in 1983.
The hottest May reached 19.8°C in 2023. The coldest dipped to -3.6°C in 2004.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average May temperatures have risen by about 1.3°C. Daytime highs moved from 6.9°C to 8.5°C and overnight lows from 3.2°C to 4.3°C over the same span.
May is one of the warmer months of the year in Sept-Îles and about average for rainfall, so plan for around 7.8°C daytime highs and 3.9°C at night.
Not quite — May is the 7th coolest month in Sept-Îles, averaging 5.9°C.
For May in Sept-Îles, pack warm layers and a jacket for chilly mornings, with typical highs of 7.8°C and lows of 3.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in May averages 84% — quite humid.
Average wind speed in May is 2.9 m/s. The windiest May on record averaged 3.6 m/s (1983).
The wettest May on record was 1983 with 168 mm. On average, May sees 86 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Sept-Îles behaves each May, 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 May specifically, along with year-by-year records and how the month has changed over the decades.
