Sept Iles is a weather station located 53 m above sea level, 10 km from Sept-Îles. Its records go back to 1945: 76 years of temperature are available up to 2020, along with rainfall and a comparison with two reference normals. Closed series: the records of this station end in 2020. Over 1991–2020 the annual mean temperature there is 1.4 °C, noticeably higher than over 1961–1990 (0.7 °C): a difference of 0.7 °C. The warmest year of the series is 2010 (4.5 °C) and the coldest 1972 (−1.4 °C). The last complete year, 2020, ranks 7 out of 76, from warmest to coldest. Over 1961–2020, the annual mean temperature changes by +0.22 °C per decade. The station ranks 144 out of 240 stations, from the fastest rise to the slowest.
Annual mean temperature since 1945
The first ten years of the series (1945–1954) average 0.5 °C; the last ten (2011–2020) average 1.7 °C, a difference of +1.2 °C. Of the ten warmest years in the series, 5 fall after 1999. The warmest is 2010 (4.5 °C). The ten-year running mean peaks at 2.0 °C (2014) and bottoms out at 0.3 °C (1994).
Annual rainfall since 1945
On average 1273 mm of rain falls per year over the 56 documented years. The wettest year, 1969, received 1682 mm; the driest, 1987, only 952 mm, which is 1.8 times less. Over 1961–1990, December is on average the wettest month (135 mm) and February the driest (89 mm). Between 1982 and 2001, 8 years out of 20 exceeded the series average.
Monthly normals: 1961–1990 against 1991–2020
The table compares, month by month, the mean temperature and the rainfall total of two thirty-year reference periods. The difference column shows what the recent period changes compared with the earlier one.
| Month | Temp. 1961–1990 | Temp. 1991–2020 | Difference | Rain 1961–1990 | Rain 1991–2020 | Difference |
|---|---|---|---|---|---|---|
| January | −14.6 °C | −14.1 °C | +0.5 °C | 118 mm | 115 mm | −3 mm |
| February | −13.0 °C | −13.0 °C | 0.0 °C | 89 mm | 82 mm | −7 mm |
| March | −6.9 °C | −6.9 °C | 0.0 °C | 99 mm | 95 mm | −4 mm |
| April | −0.2 °C | 0.0 °C | +0.2 °C | 103 mm | 94 mm | −9 mm |
| May | 5.5 °C | 6.1 °C | +0.6 °C | 103 mm | – | – |
| June | 11.1 °C | 11.7 °C | +0.6 °C | 99 mm | – | – |
| July | 14.7 °C | 15.1 °C | +0.4 °C | 97 mm | – | – |
| August | 13.7 °C | 14.7 °C | +1.0 °C | 106 mm | – | – |
| September | 8.8 °C | 10.0 °C | +1.2 °C | 119 mm | – | – |
| October | 3.3 °C | 4.3 °C | +1.0 °C | 108 mm | – | – |
| November | −2.7 °C | −2.0 °C | +0.7 °C | 114 mm | 125 mm | +11 mm |
| December | −10.9 °C | −9.2 °C | +1.7 °C | 135 mm | 125 mm | −10 mm |
The largest temperature change is in December (+1.7 °C) and the smallest in February (0.0 °C); over the year the mean difference is +0.7 °C, and 10 months out of twelve are warmer than before.
Records at Sept Iles
- Warmest year: 4.5 °C, in 2010
- Coldest year: −1.4 °C, in 1972
- Driest year: 952 mm, in 1987
- Wettest year: 1682 mm, in 1969
- Warmest month: 16.9 °C, in August 2014
- Coldest month: −22.1 °C, in January 1957
- Wettest month: 308 mm, in December 2010
5.9 °C separate the warmest year of the series from the coldest. Daily records are not part of the dataset for this station: only annual and monthly extremes are shown.
Temperature trend over 1961–2020
The regression line of annual mean temperature changes by +0.22 °C per decade between 1961 and 2020, about +1.3 °C over the whole period. That is slower than the median of the 240 stations (+0.25 °C per decade), by 0.03 °C per decade: the station ranks 144 out of 240.
Data source and licence
Data source: Environment and Climate Change Canada (dataset “AHCCD (ahccd-monthly) + climate-daily”), licence Open Government Licence – Canada. Last updated: 29 October 2026.
The data for Sept Iles are shown as the source publishes them; this site does not correct them. A year is kept only if at least eleven months of measurements are available, and a normal is computed only with at least twenty years of data out of its thirty. Temperatures are rounded to 0.1 °C and rainfall to the millimetre. The station is one of 240 stations in Canada: the overview page lets you compare them.
Frequently asked questions
What is the annual mean temperature at Sept Iles?
Over 1991–2020, the annual mean temperature at Sept Iles is 1.4 °C. It was 0.7 °C over 1961–1990, a difference of +0.7 °C.
What is the warmest year ever measured at Sept Iles?
Since records began in 1945, the warmest year at Sept Iles is 2010, at 4.5 °C on average. The coldest is 1972 (−1.4 °C).
Is the climate at Sept Iles getting warmer?
Yes: at Sept Iles, the annual mean temperature rises by 0.22 °C per decade between 1961 and 2020, +1.3 °C in total. 5 of the 10 warmest years in the series fall after 1999.
Towns near this station
Neighbouring stations