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Climate & Temperature > Finland > Helsinki Climate > Precipitation/ Rainfall
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Rainfall/ Precipitation in Helsinki, Finland

  • Helsinki is leased on average 688 mm (27.1 in) of rainfall per year, or 57.3 mm (2.3 in) per month.
  • On average there are 191 days per year with more than 0.1 mm (0.004 in) of rainfall (precipitation) or 15.9 days with a quantity of rain, sleet, snow etc. per month.
  • The driest weather is in March when an average of 36 mm (1.4 in) of rainfall (precipitation) occurs.
  • The wettest weather is in October when an average of 73 mm (2.9 in) of rainfall (precipitation) occurs.

Precipitation Table

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
rainfall iconAverage Precipitation mm (in) 56 (2.2) 42 (1.7) 36 (1.4) 44 (1.7) 41 (1.6) 51 (2) 68 (2.7) 72 (2.8) 71 (2.8) 73 (2.9) 68 (2.7) 66 (2.6) 688 (27.1)
rainwater catchment iconPrecipitation Litres/m² (Gallons/ft²) 56 (1.37) 42 (1.03) 36 (0.88) 44 (1.08) 41 (1.01) 51 (1.25) 68 (1.67) 72 (1.77) 71 (1.74) 73 (1.79) 68 (1.67) 66 (1.62) 688 (16.87)
rain days iconNumber of Wet Days (probability of rain on a day) 20 (65%) 18 (64%) 14 (45%) 13 (43%) 12 (39%) 13 (43%) 14 (45%) 15 (48%) 15 (50%) 18 (58%) 19 (63%) 20 (65%)   191 (52%)
sunny or cloudy iconPercentage of Sunny (Cloudy) Daylight Hours 17 (83) 23 (77) 38 (62) 42 (58) 52 (48) 52 (48) 54 (46) 53 (47) 39 (61) 25 (75) 14 (86) 10 (90)   41 (59)





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Precipitation Nearby Helsinki, Finland

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