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Climate - Vaasa (Finland)


Average weather, temperature, rainfall, sunshine hours

Flag - Finland

Vaasa, where it's located


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Climate chart - Vaasa (Finland)
Climate chart - Vaasa (Finland)

The climate of Vaasa is cold continental, with freezing winters and mild summers.
The city is located in central Finland, on the coast of the Gulf of Bothnia.
The white nights, when it doesn't get completely dark even at midnight, occur from 2 May to 12 August.
In winter, there can be cold spells of arctic origin. The coldest record is -38.6 °C (-37.5 °F) and was set in February 1966.
During cold periods, the sea can freeze. It is useful to recall that sea water freezes at about -2 °C (28.5 °F).
In summer, also due to the length of the days, the sunshine amount is quite good, and definitely better than in Norway. Sometimes there can be short hot periods. The highest record is 33.7 °C (92.7 °F) and was set in July 2018.

Vaasa

Best Time


The best time to visit Vaasa 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.

Vaasa - Climate data


The average temperature of the coldest month (February) is of -5.7 °C (21.7 °F), that of the warmest month (July) is of 16.9 °C (62.3 °F). Here are the average temperatures.
Vaasa - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January-8.1-2-5172822.9
February-9.1-2.3-5.7162821.7
March-61.4-2.3213527.9
April-0.97.33.2304537.8
May4.113.68.9395747.9
June918.113.6486556.4
July12.521.216.9547062.3
August11.319.715.5526759.9
September6.814.410.6445851.1
October27.54.8364640.6
November-22.50.2283632.4
December-5.60-2.8223227
Year1.28.54.8534.247.340.5

Precipitation amounts to 575 millimeters (22.6 inches) per year: so, it is at an intermediate level. It ranges from 25 mm (1 in) in the driest month (April) to 70 mm (2.8 in) in the wettest ones (July, August) Here is the average precipitation.
Vaasa - Average precipitation
MonthMillimetersInchesDays
January401.610
February301.28
March301.27
April2517
May401.67
June552.28
July702.88
August702.810
September5029
October652.610
November50211
December50211
Year57522.6105

The sea temperature ranges from 0 °C (32 °F) in March to 15 °C (59 °F) in August. Here are the average sea temperatures.
Vaasa - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January1.535
February0.533
March032
April134
May338
June846
July13.556
August1559
September12.554
October8.547
November541
December337
Year642.8

There are on average around 1785 sunshine hours per year. Here are the average hours of sunshine per day.
Vaasa - Sunshine hours
MonthAverageTotal
January130
February2.575
March4130
April6.5190
May9280
June10305
July9285
August7220
September4.5130
October2.585
November1.540
December0.520
Year4.91785

Vaasa - Weather by month

Based on the period 1991-2020
(January - February - March - April - May - June - July - August - September - October - November - December)


January is generally a very cold month. The average temperature is of -5.0 °C (23 °F), with a minimum of -8.1 °C (17.4 °F) and a maximum of -2 °C (28.5 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -22.5 °C (-8 °F). However, it dropped to -37 °C (-34.6 °F) in January 1999.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 4.5 °C (40 °F). However, it reached 7.7 °C (45.9 °F) in January 2020.
Rain iconPrecipitation amounts to 40 mm (1.6 in), distributed over 10 days.
The day lasts on average 6 hours and 0 minutes. So the days are short.
Sun iconThere is an average of 1 hour of sunshine per day. So, the sun shines 16% of the time.
The average humidity is 89%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
Sea iconThe average sea temperature is of 1.5 °C (34.5 °F). Therefore, the sea is very cold for swimming.



February, the coldest month of the year, is generally a freezing cold month. The average temperature is of -5.7 °C (22 °F), with a minimum of -9.1 °C (15.6 °F) and a maximum of -2.3 °C (27.8 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -22 °C (-7.5 °F). However, it dropped to -31 °C (-23.8 °F) in February 2011.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 4.5 °C (39.5 °F). However, it reached 8 °C (46.4 °F) in February 2017.
Rain iconPrecipitation amounts to 30 mm (1.2 in), distributed over 8 days.
The day lasts on average 8 hours and 50 minutes.
Sun iconThere are on average 2.5 hours of sunshine per day. So, the sun shines 29% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is 12 kph (8 mph).
Sea iconThe average sea temperature is of 0.5 °C (32.5 °F). Therefore, the sea is very cold for swimming.



March is generally a very cold month. The average temperature is of -2.3 °C (28 °F), with a minimum of -6 °C (21.2 °F) and a maximum of 1.4 °C (34.5 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -18 °C (0 °F). However, it dropped to -26.3 °C (-15.3 °F) in March 2006.
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 8 °C (46.5 °F). However, it reached 14.5 °C (58.1 °F) in March 2007.
Rain iconPrecipitation amounts to 30 mm (1.2 in), distributed over 7 days.
The day lasts on average 11 hours and 55 minutes.
Sun iconThere are on average 4 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
Sea iconThe average sea temperature is of 0 °C (32 °F). Therefore, the sea is very cold for swimming.



April is generally a cold month. The average temperature is of 3.2 °C (38 °F), with a minimum of -0.9 °C (30.4 °F) and a maximum of 7.3 °C (45.1 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -7.5 °C (18 °F). However, it dropped to -16 °C (3.2 °F) in April 2018.
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 15.5 °C (60.5 °F). However, it reached 22.5 °C (72.5 °F) in April 2019.
Rain iconPrecipitation amounts to 25 mm (1 in), distributed over 7 days.
The day lasts on average 15 hours and 5 minutes.
Sun iconThere are on average 6.5 hours of sunshine per day. So, the sun shines 42% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
Sea iconThe average sea temperature is of 1 °C (33.5 °F). Therefore, the sea is very cold for swimming.



May is generally a mild month. The average temperature is of 8.9 °C (48 °F), with a minimum of 4.1 °C (39.4 °F) and a maximum of 13.6 °C (56.5 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -3 °C (27 °F). However, it dropped to -6.4 °C (20.5 °F) in May 2007.
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 23 °C (73 °F). However, it reached 28.7 °C (83.7 °F) in May 2013.
Rain iconPrecipitation amounts to 40 mm (1.6 in), distributed over 7 days.
The day lasts on average 18 hours and 10 minutes. So the days are very long.
Sun iconThere are on average 9 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 66%.
The average wind speed is 13 kph (8 mph).
Sea iconThe average sea temperature is of 3 °C (37.5 °F). Therefore, the sea is very cold for swimming.



June is generally a mild month. The average temperature is of 13.6 °C (56 °F), with a minimum of 9 °C (48.3 °F) and a maximum of 18.1 °C (64.5 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around 2.5 °C (36 °F). However, it dropped to -2.3 °C (27.9 °F) in June 2004.
Warm thermometer iconOn the warmest days, which normally occur at the end of the month, the temperature usually reaches around 25.5 °C (77.5 °F). However, it reached 31.8 °C (89.2 °F) in June 2011.
Rain iconPrecipitation amounts to 55 mm (2.2 in), distributed over 8 days.
The day lasts on average 20 hours and 10 minutes. So the days are very long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
Sun iconThere are on average 10 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 67%.
The average wind speed is 12 kph (8 mph).
Sea iconThe average sea temperature is of 8 °C (46 °F). Therefore, the sea is very cold for swimming.



July, the warmest month of the year, is generally a very mild month. The average temperature is of 16.9 °C (62 °F), with a minimum of 12.5 °C (54.4 °F) and a maximum of 21.2 °C (70.2 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 5 °C (41 °F). However, it dropped to 0 °C (32 °F) in July 2020.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27.5 °C (81.5 °F). However, it reached 33.7 °C (92.7 °F) in July 2018.
Rain iconPrecipitation amounts to 70 mm (2.8 in), distributed over 8 days.
The day lasts on average 19 hours and 0 minutes. So the days are very long.
Sun iconThere are on average 9 hours of sunshine per day. So, the sun shines 48% of the time.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
Sea iconThe average sea temperature is of 13.5 °C (56.5 °F). Therefore, the sea is very cold for swimming.



August is generally a very mild month. The average temperature is of 15.5 °C (60 °F), with a minimum of 11.3 °C (52.3 °F) and a maximum of 19.7 °C (67.4 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3 °C (37.5 °F). However, it dropped to 1.9 °C (35.4 °F) in August 2008.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 26 °C (78.5 °F). However, it reached 32 °C (89.6 °F) in August 2014.
Rain iconPrecipitation amounts to 70 mm (2.8 in), distributed over 10 days.
The day lasts on average 16 hours and 0 minutes. So the days are long.
Sun iconThere are on average 7 hours of sunshine per day. So, the sun shines 44% of the time.
The average humidity is 78%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
Sea iconThe average sea temperature is of 15 °C (59.5 °F). Therefore, the sea is cold for swimming.



September is generally a mild month. The average temperature is of 10.6 °C (51 °F), with a minimum of 6.8 °C (44.2 °F) and a maximum of 14.4 °C (58 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -1.5 °C (29 °F). However, it dropped to -5 °C (23 °F) in September 1998.
Warm thermometer iconOn the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 21 °C (69.5 °F). However, it reached 25.1 °C (77.2 °F) in September 2019.
Rain iconPrecipitation amounts to 50 mm (2 in), distributed over 9 days.
The day lasts on average 12 hours and 55 minutes.
Sun iconThere are on average 4.5 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 82%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).
Sea iconThe average sea temperature is of 12.5 °C (54 °F). Therefore, the sea is very cold for swimming.



October is generally a quite cold month. The average temperature is of 4.8 °C (41 °F), with a minimum of 2 °C (35.7 °F) and a maximum of 7.5 °C (45.5 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -7 °C (19.5 °F). However, it dropped to -20.4 °C (-4.7 °F) in October 1992.
Warm thermometer iconOn the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 13 °C (56 °F). However, it reached 19 °C (66.2 °F) in October 2018.
Rain iconPrecipitation amounts to 65 mm (2.6 in), distributed over 10 days.
The day lasts on average 9 hours and 40 minutes.
Sun iconThere are on average 2.5 hours of sunshine per day. So, the sun shines 28% of the time.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is 12 kph (7 mph).
Sea iconThe average sea temperature is of 8.5 °C (47 °F). Therefore, the sea is very cold for swimming.



November is generally a cold month. The average temperature is of 0.2 °C (32 °F), with a minimum of -2 °C (28.3 °F) and a maximum of 2.5 °C (36.5 °F).
Cold thermometer iconOn the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -12 °C (10.5 °F). However, it dropped to -23.6 °C (-10.5 °F) in November 2010.
Warm thermometer iconOn the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 8 °C (46.5 °F). However, it reached 12.6 °C (54.7 °F) in November 2015.
Rain iconPrecipitation amounts to 50 mm (2 in), distributed over 11 days.
The day lasts on average 6 hours and 40 minutes. So the days are short.
Sun iconThere are on average 1.5 hours of sunshine per day. So, the sun shines 20% of the time.
The average humidity is 91%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
Sea iconThe average sea temperature is of 5 °C (41 °F). Therefore, the sea is very cold for swimming.



December is generally a very cold month. The average temperature is of -2.8 °C (27 °F), with a minimum of -5.6 °C (22 °F) and a maximum of 0 °C (32 °F).
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -17 °C (1.5 °F). However, it dropped to -30.1 °C (-22.2 °F) in December 2002.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 5.5 °C (42 °F). However, it reached 8.7 °C (47.7 °F) in December 2015.
Rain iconPrecipitation amounts to 50 mm (2 in), distributed over 11 days.
The day lasts on average 4 hours and 55 minutes. So the days are short. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
Sun iconThere are on average 0.5 hours of sunshine per day. So, the sun shines 14% of the time.
The average humidity is 90%. Hence, the air is normally humid.
The average wind speed is 13 kph (8 mph).
Sea iconThe average sea temperature is of 3 °C (37 °F). Therefore, the sea is very cold for swimming.

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