Climate averages 1991–2020
Umeå weather
in September.
A cool, moderately wet month: the 4th warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a cool month in Umeå: daytime highs average 13.0°C and nights cool to about 8.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 62 mm of rain on roughly 10 days, which makes September a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 07 min on an average September day.
The nearest other city in this atlas is Luleå (215 km away). In September its highs average 12.1°C, 0.9°C cooler than Umeå, with 59 mm of rain.
Among the 21 cities listed in Sweden, Umeå ranks 20th of 21 for the warmest September highs and joint 16th of 21 for the driest September (rainfall, lowest first). The mean September high of those 21 cities is 15.5°C; Umeå is 2.6°C cooler than that mean.
From September to October, average highs fall by 6.7°C to 6.3°C, and monthly rainfall rises from 62 mm to 72 mm.
The annual picture
September in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Umeå climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -2.7°C-7.3°C | -7.3°C | 49 | 10.2 | 5.66 h |
| February | -3.5°C-8.2°C | -8.2°C | 37 | 7.9 | 8.59 h |
| March | -0.2°C-5.3°C | -5.3°C | 35 | 8.1 | 11.712 h |
| April | 4.7°C-1.2°C | -1.2°C | 35 | 7.7 | 15.015 h |
| May | 10.5°C4.2°C | 4.2°C | 42 | 8.7 | 18.318 h |
| June | 15.3°C9.2°C | 9.2°C | 58 | 9.8 | 20.621 h |
| July | 18.8°C13.1°C | 13.1°C | 74 | 12.3 | 19.520 h |
| August | 17.7°C12.5°C | 12.5°C | 75 | 10.9 | 16.416 h |
| September, selected | 13.0°C8.3°C | 8.3°C | 62 | 10.0 | 13.113 h |
| October | 6.3°C2.7°C | 2.7°C | 72 | 11.2 | 9.910 h |
| November | 1.8°C-1.5°C | -1.5°C | 69 | 12.2 | 6.77 h |
| December | -0.8°C-4.9°C | -4.9°C | 62 | 12.0 | 4.65 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Luleå in SeptemberSweden · 215 kmHigh 12.1°C · Low 8.2°C · 59 mm rain
- Pori in SeptemberFinland · 272 kmHigh 14.1°C · Low 9.4°C · 62 mm rain
- Oulu in SeptemberFinland · 282 kmHigh 12.2°C · Low 7.5°C · 56 mm rain
- Tampere in SeptemberFinland · 315 kmHigh 13.5°C · Low 8.8°C · 53 mm rain
- Jyväskylä in SeptemberFinland · 327 kmHigh 13.2°C · Low 8.1°C · 54 mm rain
- Kuopio in SeptemberFinland · 384 kmHigh 12.6°C · Low 8.3°C · 65 mm rain
- Gävle in SeptemberSweden · 386 kmHigh 15.4°C · Low 9.2°C · 45 mm rain
- Turku in SeptemberFinland · 390 kmHigh 15.0°C · Low 8.8°C · 58 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Umeå) is explained once on the Umeå year overview and on the Sources, method and limits page.