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Climate in Lahti (Finland)


Average weather, temperature, rainfall, sunshine hours

Flag - Finland

Lahti, where it's located


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Climate chart - Lahti
The climate of Lahti is cold continental, with freezing winters and mild summers.
The city is located in southern Finland, about 90 km (55 mi) north of Helsinki.
The white nights, when it doesn't get completely dark even at midnight, occur from May 9th to August 5th.
In winter, there can be cold spells of arctic origin. The coldest record is -35.6 °C (-32.1 °F) and was set in February 1967.
In summer, there can be short hot periods. The highest record is 35 °C (95 °F) and was set in July 2010.

Lahti

Best Time


The best time to visit Lahti 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.

Lahti - Climate data


In Lahti, the average temperature of the coldest month (February) is of -6.4 °C, that of the warmest month (July) is of 17.4 °C. Here are the average temperatures.
Lahti - Average temperatures (1991-2020)
Temperatures (°C)
MonthMinMaxMean
January-9.1-3-6.1
February-9.8-2.9-6.4
March-6.82.1-2.3
April-1.49.13.9
May3.716.310
June8.520.114.3
July11.623.117.4
August10.121.115.6
September5.815.210.5
October1.17.84.5
November-2.32.40
December-6.2-1-3.6
Year0.59.34.85

Precipitation amounts to 615 millimeters per year: so, it is at an intermediate level. It ranges from 30 millimeters in the driest months (March, April) to 70 millimeters in the wettest ones (July, August) Here is the average precipitation.
Lahti - Average precipitation
MonthRain (mm)Days
January4512
February359
March308
April307
May408
June659
July7010
August7010
September559
October6511
November6011
December5012
Year615116

Lahti - 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 freezing cold month. The average temperature is of -6.1 °C, with a minimum of -9.1 °C and a maximum of -3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -23.5 °C. However, it dropped to -33 °C in January 2003.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 4 °C. However, it reached 9.5 °C in January 2019.
Rain iconPrecipitation amounts to 45 mm, distributed over 12 days.
The day lasts on average 6 hours and 35 minutes. So the days are short.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of 11 kph.


February, the coldest month of the year, is generally a freezing cold month. The average temperature is of -6.4 °C, with a minimum of -9.8 °C and a maximum of -2.9 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -24 °C. However, it dropped to -32.4 °C in February 1996.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 4 °C. However, it reached 7.8 °C in February 2015.
Rain iconPrecipitation amounts to 35 mm, distributed over 9 days.
The day lasts on average 9 hours and 5 minutes.
The average humidity is 85%. Hence, the air is normally humid.
The average wind speed is of 10 kph.


March is generally a very cold month. The average temperature is of -2.3 °C, with a minimum of -6.8 °C and a maximum of 2.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -18.5 °C. However, it dropped to -26.9 °C in March 2013.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 9.5 °C. However, it reached 16.6 °C in March 2007.
Rain iconPrecipitation amounts to 30 mm, distributed over 8 days.
The day lasts on average 11 hours and 55 minutes.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is of 11 kph.


April is generally a cold month. The average temperature is of 3.9 °C, with a minimum of -1.4 °C and a maximum of 9.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -9 °C. However, it dropped to -16.5 °C in April 1998.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 18.5 °C. However, it reached 24.2 °C in April 1998.
Rain iconPrecipitation amounts to 30 mm, distributed over 7 days.
The day lasts on average 14 hours and 50 minutes.
The average humidity is 75%. Hence, the air is normally humid.
The average wind speed is of 12 kph.


May is generally a mild month. The average temperature is of 10 °C, with a minimum of 3.7 °C and a maximum of 16.3 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -3.5 °C. However, it dropped to -7 °C in May 1995.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 25 °C. However, it reached 30.1 °C in May 1995.
Rain iconPrecipitation amounts to 40 mm, distributed over 8 days.
The day lasts on average 17 hours and 30 minutes. So the days are very long.
The average humidity is 67%.
The average wind speed is of 12 kph.


June is generally a mild month. The average temperature is of 14.3 °C, with a minimum of 8.5 °C and a maximum of 20.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 1.5 °C. However, it dropped to -1.8 °C in June 2017.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27 °C. However, it reached 32.1 °C in June 1999.
Rain iconPrecipitation amounts to 65 mm, distributed over 9 days.
The day lasts on average 19 hours and 5 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 67%.
The average wind speed is of 12 kph.


July, the warmest month of the year, is generally a very mild month. The average temperature is of 17.4 °C, with a minimum of 11.6 °C and a maximum of 23.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 5.5 °C. However, it dropped to 1.8 °C in July 2009.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 28.5 °C. However, it reached 35 °C in July 2010.
Rain iconPrecipitation amounts to 70 mm, distributed over 10 days.
The day lasts on average 18 hours and 10 minutes. So the days are very long.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is of 10 kph.


August is generally a very mild month. The average temperature is of 15.6 °C, with a minimum of 10.1 °C and a maximum of 21.1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around 3.5 °C. However, it dropped to 0.6 °C in August 1994.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 27.5 °C. However, it reached 33.8 °C in August 2010.
Rain iconPrecipitation amounts to 70 mm, distributed over 10 days.
The day lasts on average 15 hours and 35 minutes. So the days are long.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is of 10 kph.


September is generally a mild month. The average temperature is of 10.5 °C, with a minimum of 5.8 °C and a maximum of 15.2 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -2 °C. However, it dropped to -8.4 °C in September 1993.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 21.5 °C. However, it reached 25.2 °C in September 1991.
Rain iconPrecipitation amounts to 55 mm, distributed over 9 days.
The day lasts on average 12 hours and 50 minutes.
The average humidity is 86%. Hence, the air is normally humid.
The average wind speed is of 11 kph.


October is generally a quite cold month. The average temperature is of 4.5 °C, with a minimum of 1.1 °C and a maximum of 7.8 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -8 °C. However, it dropped to -16.5 °C in October 2002.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 14.5 °C. However, it reached 18.8 °C in October 2018.
Rain iconPrecipitation amounts to 65 mm, distributed over 11 days.
The day lasts on average 10 hours and 0 minutes.
The average humidity is 87%. Hence, the air is normally humid.
The average wind speed is of 11 kph.


November is generally a very cold month. The average temperature is of 0 °C, with a minimum of -2.3 °C and a maximum of 2.4 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -12.5 °C. However, it dropped to -23.8 °C in November 1995.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 8.5 °C. However, it reached 13.2 °C in November 2015.
Rain iconPrecipitation amounts to 60 mm, distributed over 11 days.
The day lasts on average 7 hours and 20 minutes. So the days are short.
The average humidity is 90%. Hence, the air is normally humid.
The average wind speed is of 11 kph.


December is generally a very cold month. The average temperature is of -3.6 °C, with a minimum of -6.2 °C and a maximum of -1 °C.
Cold thermometer iconOn the coldest nights of the month, the temperature usually drops to around -19 °C. However, it dropped to -31.2 °C in December 1995.
Warm thermometer iconOn the warmest days of the month, the temperature usually reaches around 4.5 °C. However, it reached 10.4 °C in December 2015.
Rain iconPrecipitation amounts to 50 mm, distributed over 12 days.
The day lasts on average 5 hours and 40 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 89%. Hence, the air is normally humid.
The average wind speed is of 12 kph.

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