Tromsø Average Rainfall by Month

This page shows the average precipitation in each month of the year in Tromsø, Norway. It is based on NOAA data for the years 1991–2020.
What's the Rainiest Month in Tromsø?
In Tromsø, October has the greatest precipitation of any month. On average, Tromsø gets 12.9 cm of precipitation in October.
However, September is the month with the greatest chance of precipitation. 70.2% of days in September will have at least some rain.
What's the Driest Month in Tromsø?
In Tromsø, May has the least precipitation of any month. On average, Tromsø gets 5.60 cm of precipitation in May.
May is also the month where rain is least common. 55.4% of days in May will have measurable rain.
Month Precipitation % Chance
January 10.89 cm 66.0
February 9.44 cm 64.4
March 9.79 cm 63.0
April 6.98 cm 58.3
May 5.60 cm 55.4
June 5.73 cm 58.4
July 7.45 cm 57.2
August 8.91 cm 64.2
September 11.06 cm 70.2
October 12.86 cm 68.9
November 9.31 cm 63.0
December 11.04 cm 67.3
Year 109.06 cm 63.0
Weather Station Details
Years Station Coordinates
1920–2024 Tromso location
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