Climate guideThirty-year normals for Västerås
Västerås climate by month
Warm-summer humid continental · DfbBest Jun–Aug
Annual mean7°day and night
Seasonal swing20°warmest vs coolest
Precipitation624 mm150 wet days a year
59.62° N, 16.55° EElevation 16 mUTC+2 · Central European Summer Time
When to goVästerås · weather score
Best timeJun–Aug
October: high / low10° / 3°
iSummary
What the weather is like
Västerås has a warm-summer humid continental climate (Köppen Dfb): warm summers, cold winters and precipitation in every season.
The warmest month is July, when afternoons average 23° and nights 12°. January is the coolest month, with highs of 0° and lows of -5°. The difference between the warmest and the coolest month is about 20°, a large swing typical of continental interiors.
About 624 mm of precipitation falls in an average year. July is the wettest month (79 mm, 15 wet days) and April the driest (36 mm, 10 wet days). Cloud cover ranges from 34% in May to 58% in November.
Compared with Stockholm, the capital, Västerås is 0.2° warmer on a July afternoon and receives more precipitation over the year.
Year in figures
- Hottest afternoons
- 23° · July
- Coldest nights
- -5° · February
- Wettest month
- July
- Driest month
- April
- Clearest skies
- May · 34% cloud
- Longest day
- 18 h 40 min
- Shortest day
- 6 h 04 min
iiCharts
Twelve months at a glance
Temperature and precipitation
Daily high/low range bars, monthly precipitation columnsTemperature curve
Average high, lowDaylight
Hours between sunrise and sunset on the 15th of each monthiiiData table
Climate normals month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high | 0° | 1° | 5° | 11° | 17° | 21° | 23° | 22° | 17° | 10° | 5° | 2° |
| Average low | -5° | -5° | -3° | 1° | 5° | 10° | 12° | 12° | 8° | 3° | 0° | -3° |
| Precipitation | 39 mm | 31 mm | 32 mm | 36 mm | 43 mm | 68 mm | 79 mm | 77 mm | 55 mm | 60 mm | 57 mm | 47 mm |
| Wet days (≥1 mm) | 10.6 | 10.7 | 10 | 9.5 | 12.7 | 14.4 | 15.4 | 15.2 | 11.4 | 13.1 | 13.7 | 12.8 |
| Cloud cover | 56% | 52% | 49% | 42% | 34% | 37% | 36% | 37% | 41% | 49% | 58% | 56% |
| Daylight | 6h 48 | 9h 13 | 11h 43 | 14h 30 | 17h 02 | 18h 40 | 17h 58 | 15h 38 | 12h 56 | 10h 16 | 7h 40 | 6h 04 |
| Month score | 22 | 24 | 27 | 37 | 62 | 64 | 65 | 64 | 62 | 19 | 14 | 17 |
ivMonth by month
Västerås in every month
January22
0° / -5°
39 mm · 10.6 wet days
February24
1° / -5°
31 mm · 10.7 wet days
March27
5° / -3°
32 mm · 10 wet days
April37
11° / 1°
36 mm · 9.5 wet days
May62
17° / 5°
43 mm · 12.7 wet days
June64
21° / 10°
68 mm · 14.4 wet days
July65
23° / 12°
79 mm · 15.4 wet days
August64
22° / 12°
77 mm · 15.2 wet days
September62
17° / 8°
55 mm · 11.4 wet days
October19
10° / 3°
60 mm · 13.1 wet days
November14
5° / 0°
57 mm · 13.7 wet days
December17
2° / -3°
47 mm · 12.8 wet days