Kotka Average Rainfall by Month

This page shows the average precipitation in each month of the year in Kotka, Finland. It is based on NOAA data for the years 1991–2020.
What's the Rainiest Month in Kotka?
In Kotka, October has the greatest precipitation of any month. On average, Kotka gets 6.1 cm of precipitation in October.
However, January is the month with the greatest chance of precipitation. 63.7% of days in January will have at least some rain.
What's the Driest Month in Kotka?
In Kotka, April has the least precipitation of any month. On average, Kotka gets 2.86 cm of precipitation in April.
May is the month with the lowest chance of precipitation. 30.0% of days in May will have measurable rain.
Month Precipitation % Chance
January 4.19 cm 63.7
February 3.96 cm 57.7
March 3.29 cm 43.6
April 2.86 cm 36.8
May 3.15 cm 30.0
June 5.05 cm 38.7
July 4.31 cm 35.6
August 5.43 cm 39.3
September 5.01 cm 40.0
October 6.14 cm 51.0
November 6.05 cm 59.1
December 4.81 cm 62.4
Year 55.14 cm 46.8
Weather Station Details
Years Station Coordinates
1959–2024 Kotka Rankki location
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