Climate averages 1991–2020
Västerås weather
in August.
A mild, moderately wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Västerås: daytime highs average 20.8°C and nights cool to about 13.1°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 73 mm of rain on roughly 12 days, which makes August a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 36 min on an average August day.
The nearest other city in this atlas is Uppsala (67 km away). In August its highs average 20.5°C, about as warm as Västerås, with 72 mm of rain.
Among the 21 cities listed in Sweden, Västerås ranks joint 1st of 21 for the warmest August highs and 12th of 21 for the driest August (rainfall, lowest first). The mean August high of those 21 cities is 20.0°C; Västerås is 0.8°C warmer than that mean.
From August to September, average highs fall by 5.0°C to 15.8°C, and monthly rainfall falls from 73 mm to 52 mm.
The annual picture
August 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
Västerås climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -0.3°C-4.7°C | -4.7°C | 37 | 8.2 | 6.97 h |
| February | 0.4°C-5.1°C | -5.1°C | 29 | 7.4 | 9.19 h |
| March | 4.3°C-2.7°C | -2.7°C | 30 | 7.5 | 11.812 h |
| April | 10.3°C1.4°C | 1.4°C | 37 | 7.7 | 14.514 h |
| May | 15.9°C6.4°C | 6.4°C | 49 | 9.5 | 17.017 h |
| June | 19.6°C10.9°C | 10.9°C | 68 | 11.5 | 18.619 h |
| July | 22.1°C13.8°C | 13.8°C | 75 | 12.1 | 17.918 h |
| August, selected | 20.8°C13.1°C | 13.1°C | 73 | 12.2 | 15.616 h |
| September | 15.8°C9.1°C | 9.1°C | 52 | 8.8 | 12.913 h |
| October | 9.1°C4.2°C | 4.2°C | 52 | 9.9 | 10.210 h |
| November | 4.0°C0.4°C | 0.4°C | 47 | 9.3 | 7.78 h |
| December | 0.9°C-3.1°C | -3.1°C | 45 | 9.9 | 6.26 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
August in nearby cities
- Uppsala in AugustSweden · 67 kmHigh 20.5°C · Low 13.1°C · 72 mm rain
- Södertälje in AugustSweden · 77 kmHigh 20.8°C · Low 13.8°C · 70 mm rain
- Sollentuna in AugustSweden · 82 kmHigh 20.4°C · Low 13.9°C · 72 mm rain
- Örebro in AugustSweden · 85 kmHigh 20.3°C · Low 13.3°C · 74 mm rain
- Huddinge in AugustSweden · 91 kmHigh 20.0°C · Low 14.3°C · 67 mm rain
- Stockholm in AugustSweden · 91 kmHigh 20.1°C · Low 14.4°C · 67 mm rain
- Haninge in AugustSweden · 103 kmHigh 19.6°C · Low 14.3°C · 65 mm rain
- Norrköping in AugustSweden · 116 kmHigh 20.7°C · Low 14.1°C · 69 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 Västerås) is explained once on the Västerås year overview and on the Sources, method and limits page.