Climate in Vasteras (Sweden)

The climate of Västerås is Baltic, that is, moderately continental, with cold winters, during which the average temperature is a few degrees below freezing, and mild to pleasantly warm summers.
The city is located in southern Sweden, about 70 km (45 mi) west of Stockholm, on the shores of Lake Mälaren.
Given the latitude (59°37'N), the white nights, in which the sun sets but it does not get completely dark even at midnight, occur from May 13 to July 30.
In winter, during polar cold spells, the temperature can drop to -25 °C (-13 °F) or below. The coldest record is -31.8 °C (-25.2 °F) and was set in February 1979.
In summer, the temperature can reach 28/30 °C (82/86 °F). The highest record is 35.2 °C (95.4 °F) and was set in August 1975.

Best Time

The best time to visit Västerås is the summer, from June to August, since it is the mildest season. However, you must take into account some rainy days and a bit of cold at night.

Vasteras - Climate data

In Vasteras, the average temperature of the coldest month (February) is of -2.7 °C (27.1 °F), that of the warmest month (July) is of 17.4 °C (63.3 °F). Here are the average temperatures.
Precipitation amounts to 580 millimeters (22.8 inches) per year: so, it is at an intermediate level. It ranges from 25 mm (1 in) in the driest month (March) to 75 mm (3 in) in the wettest one (July). Here is the average precipitation.

Vasteras - Weather by month

Based on the period 1991-2020

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January is generally a very cold month. The average temperature is of -2.5 °C (27 °F), with a minimum of -5.2 °C (22.5 °F) and a maximum of 0.2 °C (32.3 °F).
On the coldest nights of the month, the temperature usually drops to around -17.5 °C (0.5 °F). However, it dropped to -27 °C (-16.6 °F) in January 2010.
On the warmest days of the month, the temperature usually reaches around 6.5 °C (44 °F). However, it reached 10 °C (50 °F) in January 2005.
Precipitation amounts to 40 mm (1.6 in), distributed over 9 days.
The day lasts on average 7 hours and 0 minutes. So the days are short.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).

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February, the coldest month of the year, is generally a very cold month. The average temperature is of -2.7 °C (27 °F), with a minimum of -6 °C (21.1 °F) and a maximum of 0.6 °C (33.1 °F).
On the coldest nights of the month, the temperature usually drops to around -17 °C (1.5 °F). However, it dropped to -31 °C (-23.8 °F) in February 2010.
On the warmest days of the month, the temperature usually reaches around 7.5 °C (45.5 °F). However, it reached 11 °C (51.8 °F) in February 2000.
Precipitation amounts to 30 mm (1.2 in), distributed over 7 days.
The day lasts on average 9 hours and 20 minutes.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).

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March is generally a cold month. The average temperature is of 0.7 °C (33 °F), with a minimum of -3.3 °C (26.1 °F) and a maximum of 4.6 °C (40.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -12 °C (10 °F). However, it dropped to -23 °C (-9.4 °F) in March 2005.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 12 °C (53.5 °F). However, it reached 19 °C (66.2 °F) in March 2017.
Precipitation amounts to 25 mm (1 in), distributed over 6 days.
The day lasts on average 11 hours and 55 minutes.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).

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April is generally a quite cold month. The average temperature is of 5.5 °C (42 °F), with a minimum of 0.3 °C (32.5 °F) and a maximum of 10.7 °C (51.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -6 °C (21.5 °F). However, it dropped to -9 °C (15.8 °F) in April 1992.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 19 °C (66 °F). However, it reached 26 °C (78.8 °F) in April 1993.
Precipitation amounts to 30 mm (1.2 in), distributed over 6 days.
The day lasts on average 14 hours and 40 minutes.
The average humidity is 65%.
The average wind speed is 13 kph (8 mph).

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May is generally a mild month. The average temperature is of 10.5 °C (51 °F), with a minimum of 5 °C (41.1 °F) and a maximum of 16 °C (60.7 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -2 °C (29 °F). However, it dropped to -6 °C (21.2 °F) in May 2017.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 24 °C (75.5 °F). However, it reached 28 °C (82.4 °F) in May 2014.
Precipitation amounts to 40 mm (1.6 in), distributed over 8 days.
The day lasts on average 17 hours and 10 minutes. So the days are very long.
The average humidity is 62%.
The average wind speed is 13 kph (8 mph).

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June is generally a very mild month. The average temperature is of 14.7 °C (58 °F), with a minimum of 9.6 °C (49.2 °F) and a maximum of 19.8 °C (67.7 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 4 °C (39 °F). However, it dropped to -1 °C (30.2 °F) in June 2009.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 26.5 °C (79.5 °F). However, it reached 30 °C (86 °F) in June 2018.
Precipitation amounts to 65 mm (2.6 in), distributed over 10 days.
The day lasts on average 18 hours and 35 minutes. So the days are very long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
The average humidity is 65%.
The average wind speed is 12 kph (8 mph).

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July, the warmest month of the year, is generally a very mild month. The average temperature is of 17.4 °C (63 °F), with a minimum of 12.2 °C (54 °F) and a maximum of 22.6 °C (72.6 °F).
On the coldest nights of the month, the temperature usually drops to around 7 °C (45 °F). However, it dropped to 3 °C (37.4 °F) in July 2008.
On the warmest days of the month, the temperature usually reaches around 28.5 °C (83.5 °F). However, it reached 33 °C (91.4 °F) in July 1994.
Precipitation amounts to 75 mm (3 in), distributed over 9 days.
The day lasts on average 17 hours and 50 minutes. So the days are very long.
The average humidity is 68%.
The average wind speed is 11 kph (7 mph).

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August is generally a very mild month. The average temperature is of 16.5 °C (62 °F), with a minimum of 11.3 °C (52.3 °F) and a maximum of 21.6 °C (71 °F).
On the coldest nights of the month, the temperature usually drops to around 4.5 °C (40 °F). However, it dropped to 0 °C (32 °F) in August 2007.
On the warmest days of the month, the temperature usually reaches around 28 °C (82 °F). However, it reached 34 °C (93.2 °F) in August 2014.
Precipitation amounts to 70 mm (2.8 in), distributed over 10 days.
The day lasts on average 15 hours and 25 minutes. So the days are long.
The average humidity is 71%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).

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September is generally a mild month. The average temperature is of 11.9 °C (53 °F), with a minimum of 7.4 °C (45.2 °F) and a maximum of 16.4 °C (61.6 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around 0 °C (32 °F). However, it dropped to -5 °C (23 °F) in September 2001.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 22 °C (72 °F). However, it reached 26 °C (78.8 °F) in September 2019.
Precipitation amounts to 45 mm (1.8 in), distributed over 8 days.
The day lasts on average 12 hours and 50 minutes.
The average humidity is 77%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).

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October is generally a quite cold month. The average temperature is of 6.5 °C (44 °F), with a minimum of 3.2 °C (37.8 °F) and a maximum of 9.8 °C (49.7 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -5 °C (23 °F). However, it dropped to -11 °C (12.2 °F) in October 1992.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 16 °C (60.5 °F). However, it reached 20.3 °C (68.5 °F) in October 1995.
Precipitation amounts to 55 mm (2.2 in), distributed over 9 days.
The day lasts on average 10 hours and 5 minutes.
The average humidity is 83%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).

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November is generally a cold month. The average temperature is of 2.2 °C (36 °F), with a minimum of -0.1 °C (31.8 °F) and a maximum of 4.6 °C (40.2 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -9 °C (16 °F). However, it dropped to -22 °C (-7.6 °F) in November 2010.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 10.5 °C (51 °F). However, it reached 16 °C (60.8 °F) in November 2020.
Precipitation amounts to 55 mm (2.2 in), distributed over 10 days.
The day lasts on average 7 hours and 35 minutes. So the days are short.
The average humidity is 88%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).

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December is generally a very cold month. The average temperature is of -0.9 °C (30 °F), with a minimum of -3.4 °C (25.8 °F) and a maximum of 1.6 °C (34.8 °F).
On the coldest nights of the month, the temperature usually drops to around -14.5 °C (5.5 °F). However, it dropped to -30 °C (-22 °F) in December 2001.
On the warmest days of the month, the temperature usually reaches around 8 °C (46.5 °F). However, it reached 16.9 °C (62.4 °F) in December 2003.
Precipitation amounts to 45 mm (1.8 in), distributed over 10 days.
The day lasts on average 6 hours and 5 minutes. So the days are short. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
The average humidity is 88%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).