Västerås in Summer
In summer (June, July and August), Västerås sees average daytime highs around 21°C and overnight lows near 11°C, with 216 mm of rain over about 36 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 21°C. The sky is clear or mostly clear about 17% of the time across summer, and the air most often feels dry.
Summer is Västerås's best season of the year to visit on our travel score. For the whole year in context, see Västerås's year-round climate.
- Avg daytime high
- 21°C
- warmest season of the year
- Avg overnight low
- 11°C
- Rainfall
- 216 mm
- 36 wet days
- Avg wind
- 10 km/h
- Travel score
- 6.1
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Västerås in Summer
Across summer, daytime highs hold fairly steady around 21°C.
A typical summer day in Västerås reaches about 21°C and drops to 11°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Västerås
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Västerås weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 0° / -5° | 37 | 8.1 | 5.7 | 6.5 | 0.0 |
| Feb | 1° / -5° | 29 | 7.4 | 5.8 | 8.7 | 0.0 |
| Mar | 5° / -3° | 30 | 7.5 | 4.6 | 11.3 | 0.3 |
| Apr | 11° / 1° | 37 | 7.8 | 1.6 | 14.1 | 2.7 |
| May | 16° / 5° | 49 | 9.6 | 0.2 | 16.7 | 5.1 |
| Jun | 20° / 9° | 68 | 11.5 | 0 | 18.2 | 5.9 |
| Jul | 22° / 12° | 75 | 12.1 | 0 | 17.6 | 6.3 |
| Aug | 21° / 11° | 73 | 12.3 | 0 | 15.3 | 6.0 |
| Sep | 16° / 7° | 52 | 8.8 | 0 | 12.6 | 5.0 |
| Oct | 10° / 3° | 52 | 9.9 | 0.6 | 9.8 | 2.1 |
| Nov | 4° / -0° | 47 | 9.4 | 3 | 7.3 | 0.1 |
| Dec | 1° / -3° | 45 | 9.9 | 5.9 | 5.8 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 17% of the time across summer.
Chance of precipitation in Summer
Västerås gets around 216 mm of rain over 36 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 10 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 17 h 48 min in early June to 14 hours by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.8 kWh/m².
Is summer a good time to visit Västerås?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Västerås for sightseeing.
What to pack for Västerås in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Västerås sees daytime highs around 21°C and nights near 11°C. Worth packing: light clothes, rain gear and sun protection. About 36 days see rain.
UV index in Västerås in Summer
Clear-sky midday UV across summer averages around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Västerås peaks around June 16 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 0 | 1 | 2 | 3 | 4 | 5 | 4 | 4 | 3 | 1 | 0 | 0 |
| Level | Low | Low | Low | Moderate | Moderate | High | Moderate | Moderate | Moderate | Low | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 0 | Low |
| Feb | 1 | Low |
| Mar | 2 | Low |
| Apr | 3 | Moderate |
| May | 4 | Moderate |
| Jun | 5 | High |
| Jul | 4 | Moderate |
| Aug | 4 | Moderate |
| Sep | 3 | Moderate |
| Oct | 1 | Low |
| Nov | 0 | Low |
| Dec | 0 | Low |
Where is Västerås?
Västerås sits at 59.6°N, 16.6°E, 16 m above sea level, in Sweden. The nearest listed city is Eskilstuna, 28 km away.
Topography around Västerås
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Västerås.
Within 3 km, the terrain around Västerås has only modest variations in elevation — a maximum elevation change of 61 m around an average of 23 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 95 m; within 80 km, significant variations in elevation — a maximum elevation change of 388 m.
The land around Västerås is covered by artificial surfaces (40%) and trees (36%) within 3 km, trees (45%) and cropland (23%) within 16 km, and trees (63%) within 80 km.
Sweden travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 87% of US
- price level, 2025
- GDP per capita
- $63,133
- 2025
- Happiness
- 7.3 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.1
- per 100k, 2023
- Road deaths
- 3.1
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very high
- EF EPI 609
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Västerås (59.6162°, 16.5528°, elevation 16 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.