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Contents
- The climate of Västerås
- The best time to visit Västerås
- The worst time to visit Västerås
- Spring weather in Västerås
- Summer weather in Västerås
- Autumn weather in Västerås
- Winter weather in Västerås
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Västerås
Situated finely in Sweden, Västerås reveals characteristics predominantly of a Humid continental climate, falling under the Köppen climate classification of Dfb. This type of climate involves no dry season and is coupled with a warm summer. Delving into the climatological parameters of Västerås, it is evident that the weather fluctuates significantly across the different months.
Temperatures in Västerås reach their height in July, peaking at an average high of 21.5°C (70.7°F), while they plunge to the deepest low in January, averaging -4.9°C (23.2°F). The prominence of high humidity is visible throughout the year, with average relative humidity remaining above 70% for all months. The highest average relative humidity reaches 90% in January and February, while the lowest fall in April at 72%.
Rainfall is a common occurrence in Västerås with a noticeable increase between May to August with the maximum average rainfall of 25mm (0.98") occurring in July. Snowfall dominates the scenery in winter months with January experiencing the highest average snowfall of 39mm (1.54"), and it gradually diminishes by the advent of spring.
Wind speeds maintain a steady pace throughout the year, edging slightly higher in winter. The highest average wind speed seen is in December at 15.2km/h (9.4mph), while the lowest is in July with an average speed of 11.4km/h (7.1mph).
Temperatures in Västerås reach their height in July, peaking at an average high of 21.5°C (70.7°F), while they plunge to the deepest low in January, averaging -4.9°C (23.2°F). The prominence of high humidity is visible throughout the year, with average relative humidity remaining above 70% for all months. The highest average relative humidity reaches 90% in January and February, while the lowest fall in April at 72%.
Rainfall is a common occurrence in Västerås with a noticeable increase between May to August with the maximum average rainfall of 25mm (0.98") occurring in July. Snowfall dominates the scenery in winter months with January experiencing the highest average snowfall of 39mm (1.54"), and it gradually diminishes by the advent of spring.
Wind speeds maintain a steady pace throughout the year, edging slightly higher in winter. The highest average wind speed seen is in December at 15.2km/h (9.4mph), while the lowest is in July with an average speed of 11.4km/h (7.1mph).
The best time to visit Västerås
Tourists looking to make the best of Västerås’ warm summers should plan their visit from June to August. This duration lands within the city's warmest months, where the average high temperatures range from 18.8°C (65.8°F) to 21.5°C (70.7°F). Additionally, these are the months with the longest daylight hours, ranging from 17.8 hours in July to 18.6 hours in June. Furthermore, these months enjoy a good amount of sunshine, with average daily sun durations extending from 10.8 hours in July to 12.1 hours in June.
The worst time to visit Västerås
The harsh winters of Västerås, particularly between December and February, are less suitable for tourists. This period sees average high temperatures plummet from 0.5°C (32.9°F) to -1.2°C (29.8°F) and average low temperatures between -3.1°C (26.4°F) to -4.9°C (23.2°F). Additionally, December has the fewest daylight hours of 6.2 hours a day. Moreover, these months are marked by heavy snowfall from 31mm (1.22") to 39mm (1.54"), reducing visibility and making movement around the city challenging.
Spring weather in Västerås
Spring blooms in Västerås from March to May, bringing with it a blend of moderately warm weather and gorgeous natural beauty. Average high temperatures during these months span from 3.4°C (38.1°F) in March to 15.3°C (59.5°F) in May, while low temperatures fluctuate between -2.3°C (27.9°F) to 6.3°C (43.3°F). Rainfall shows a slight uptick during Spring, with rainfall averages between 9mm (0.35") and 18mm (0.71"). The day length gradually extends during Spring from 11.8 hours in March to 17.1 hours in May.
Summer weather in Västerås
Summers in Västerås, from June to August, are typically warm but pleasantly so, with average high temperatures ranging from 18.8°C (65.8°F) to 21.5°C (70.7°F). These are also the sunniest months with between 10.8 and 12.1 hours of sunshine per day. Despite being the warmest season, Summer in Västerås sees substantial rainfall, peaking at a monthly average rainfall of 25mm (0.98") in July.
Autumn weather in Västerås
Autumn in Västerås, between September and November, introduces a mellow coolness in the atmosphere and splendid foliage. Average high temperatures start at 16.1°C (61°F) in September and gradually descend to 4.5°C (40.1°F) in November. Average low temperatures fall from 8.9°C (48°F) to 1.1°C (34°F). Rainfall remains slightly higher in Autumn, averaging between 12mm (0.47") to 15mm (0.59").
Winter weather in Västerås
Winters arrive in Västerås from December to February, bringing with it consistent snowfall and colder temperatures. The average high temperatures dip between 0.5°C (32.9°F) in December to -1.2°C (29.8°F) in January. Concurrently, the average low temperature falls between -3.1°C (26.4°F) in December to -4.9°C (23.2°F) in January, warming slightly to -4.9°C (23.2°F) in February. Snow pillows the ground during these months with an average snowfall between 31mm (1.22") in December to 39mm (1.54") in January.
Weather in January
Västerås city experiences a frigid start to the year during January when frost rules the climate. Snow-covered streets become a common sight due to significant snowfall of 39mm (1.54"), often ornamenting the surroundings with a white blanket. Weather in January »
Weather in February
While February in Västerås, Sweden, is still part of the broader winter season, moderate improvements in temperature give the locals a break from the intense cold of January. Although the mercury level increases slightly, frosty temperatures continue to grip the city. Weather in February »
Weather in March
March sees Västerås weather transitioning from bleak winter to the dawn of spring. The snowfall of previous months commences to diminish, replaced with rain, suggesting a shift in weather patterns. The clouds that protected the city from the harsh winter sun are slowly withdrawn, making room for longer daylight hours. Weather in March »
Weather in April
April arrives in Västerås, signalling the arrival of spring and saying goodbye to the leftover chills of winter. The city strips away its winter cloak as temperatures increase, making the weather significantly milder than March. Weather in April »
Weather in May
May is the harbinger of summer in Västerås, with temperatures rising significantly from April, touching a high of 15.3°C (59.5°F). A certain liveliness fills the air, with longer daylight hours allowing locals more time to engage in outdoor activities. Weather in May »
Weather in June
June marks the arrival of peak summer in Västerås, characterized by the longest daylight hours of the year and warmer temperatures. True to its position as the hottest month, June sees locals making the most of the outdoor life. Weather in June »
Weather in July
As the second summer month, July in Västerås continues to experience warm temperatures, with a slight, but noticeable increase from June. Humidity levels are at their peak, and occasional rainfall brings much-needed relief. Despite the mild discomfort, the city thrives, with the longer daylight hours providing ample opportunities for outdoor exploration. Weather in July »
Weather in August
In August, Västerås begins its gradual transition into fall, with temperatures taking a dip from July's peak. The weather remains warm and the daylight hours start to shrink. Despite a drop in temperature, the city remains lively, with locals enjoying the last of the summer evenings. Weather in August »
Weather in September
September in Västerås, Sweden, brings forth clear signs of Autumn, as temperatures continue to fall from August, reaching an average high of 16.1°C (61°F). The cityscape transforms into a sea of rusty hues as leaves change color. Weather in September »
Weather in October
October is a stark departure from the warming climes of September, marking the beginning of crisp autumn days in Västerås. Signifying a shift into colder months, residents experience sudden temperature drops. The city becomes quieter, with falling leaves and increasing rainfall setting the tone for the upcoming winter. Weather in October »
Weather in November
November welcomes the might of Scandinavian winter to Västerås, with temperatures plunging significantly from the mildness experienced in October. Signs of impending snowfall begin to appear, and the city prepares for the icy days ahead. Weather in November »
Weather in December
In December, Västerås is under the full sway of winter, with temperatures reaching a minimum of -3.1°C (26.4°F). The city is turned into a winter wonderland with significant snowfall covering the cityscape. The shorter daylight hours and freezing temperatures are a reminder of the months to come. Weather in December »
Updated: Feb 2, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Västerås?
January is the month when Västerås experiences its coldest temperatures, averaging a high of -1.2°C (29.8°F) and a low of -4.9°C (23.2°F).
What are the most humid months in Västerås?
The months with the highest humidity in Västerås are January and February, with an average relative humidity of 90%.
How much does it rain in Västerås?
Throughout the year, in Västerås, Sweden, there are 105.3 rainfall days, and 174mm (6.85") of precipitation is accumulated.
When does it snow in Västerås?
January through May, October through December are months with snowfall.
When does it snow the most in Västerås?
January is the month with the most snowfall in Västerås, Sweden. Snow falls for 10.3 days and accumulates 39mm (1.54") of snow.
How much does it snow in Västerås?
Throughout the year, in Västerås, there are 41.1 snowfall days, and 163mm (6.42") of snow is accumulated.
What is the month with the lowest UV index in Västerås?
January and February, with an average maximum UV index of 1, are months with the lowest UV index in Västerås.
What is the driest month in Västerås?
The months with the least rainfall in Västerås, Sweden, are February and April Rain falls for 4.7 days and accumulates 9mm (0.35") of rain.
What is the least humid month in Västerås?
The least humid month in Västerås is May, with an average relative humidity of 71%.
When it does not snow in Västerås?
In Västerås, snow does not fall in June through September.
When are the longest days in Västerås?
June has the longest days of the year, with an average of 18h and 36min of daylight.
What month has the most sunshine in Västerås?
The month with the most sunshine in Västerås is June, with an average of 12.1h of sunshine.
When is the highest UV index in Västerås?
The months with the highest UV index are June and July, with an average maximum UV index of 5.
What is the warmest month in Västerås?
July, with its high-temperature average of 21.5°C (70.7°F) and a low-temperature average of 12.5°C (54.5°F), is the warmest month in Västerås, Sweden.
What is the rainiest month in Västerås?
July is the month with the most rainfall in Västerås. Rain falls for 12.8 days and accumulates 25mm (0.98") of precipitation.
When is Daylight Saving Time (DST) in Västerås?
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
What is the month with the shortest days in Västerås?
The month with the shortest days is December, with an average of 6h and 12min of daylight.
What is the month with the least sunshine in Västerås?
December has the least sunshine of the year in Västerås, Sweden, with an average of 2.5h of sunshine.
Average temperature
Västerås, Sweden
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-1.2°C).
The month with the highest average low temperature is July (12.5°C).
The coldest months (with the lowest average low temperature) are January and February (-4.9°C).
Average pressure
Västerås, Sweden
- Average pressure in January:
1011.1mbar - Average pressure in February:
1011.4mbar - Average pressure in March:
1011.9mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1014.6mbar - Average pressure in June:
1012.5mbar
- Average pressure in July:
1011.1mbar - Average pressure in August:
1012.5mbar - Average pressure in September:
1013.3mbar - Average pressure in October:
1014mbar - Average pressure in November:
1010.7mbar - Average pressure in December:
1007.7mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.7mbar).
Average wind speed
Västerås, Sweden
- Average wind speed in January:
14.7km/h - Average wind speed in February:
13.8km/h - Average wind speed in March:
13.7km/h - Average wind speed in April:
13.1km/h - Average wind speed in May:
12.3km/h - Average wind speed in June:
11.9km/h
- Average wind speed in July:
11.4km/h - Average wind speed in August:
11.3km/h - Average wind speed in September:
12.5km/h - Average wind speed in October:
13.5km/h - Average wind speed in November:
14.1km/h - Average wind speed in December:
15.2km/h
The windiest month (with the highest average wind speed) is December (15.2km/h).
The calmest month (with the lowest average wind speed) is August (11.3km/h).
Average humidity
Västerås, Sweden
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (71%).
Average rainfall
Västerås, Sweden
The wettest month (with the highest rainfall) is July (25mm).
The driest months (with the least rainfall) are February and April (9mm).
Average rainfall days
Västerås, Sweden
- Average rainfall days in January:
4 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
7.1 days - Average rainfall days in April:
8 days - Average rainfall days in May:
12.1 days - Average rainfall days in June:
11.2 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
12.7 days - Average rainfall days in September:
8.1 days - Average rainfall days in October:
9.7 days - Average rainfall days in November:
8.2 days - Average rainfall days in December:
6.7 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is January (4 days).
Average snowfall
Västerås, Sweden
The month with the highest snowfall is January (39mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days
Västerås, Sweden
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
7.3 days - Average snowfall days in April:
1.5 days - Average snowfall days in May:
0.6 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
8.6 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Västerås, Sweden
- Average daylight in January:
7h and 0min - Average daylight in February:
9h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
14h and 4min - Average daylight in May:
17h and 1min - Average daylight in June:
18h and 4min
- Average daylight in July:
17h and 5min - Average daylight in August:
15h and 3min - Average daylight in September:
12h and 5min - Average daylight in October:
10h and 1min - Average daylight in November:
7h and 4min - Average daylight in December:
6h and 1min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in January:
3h and 3min - Average sunshine in February:
3h and 1min - Average sunshine in March:
4h and 5min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
12h and 1min
- Average sunshine in July:
10h and 5min - Average sunshine in August:
9h and 1min - Average sunshine in September:
8h and 0min - Average sunshine in October:
4h and 2min - Average sunshine in November:
3h and 3min - Average sunshine in December:
2h and 3min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days
Västerås, Sweden
- Average sunshine days in January:
17.9 days - Average sunshine days in February:
16.1 days - Average sunshine days in March:
18.2 days - Average sunshine days in April:
18.8 days - Average sunshine days in May:
16.2 days - Average sunshine days in June:
16.1 days
- Average sunshine days in July:
14.4 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
19.2 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
16.8 days - Average sunshine days in December:
15.9 days
The month with the most sunshine days is September (19.2 days).
The month with the least sunshine days is July (14.4 days).
Average UV index
Västerås, Sweden
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover
Västerås, Sweden
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are June and July (Cloud cover 42).
Average visibility
Västerås, Sweden
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, November and December (8km).
Västerås, Sweden
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