WEATHER IN Helsinki
Climate tables. Data for Helsinki.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -34.4 (1877) | -6.6 | -4.3 | -2.1 | 8.5 (1973) |
| february | -33.0 (1871) | -6.8 | -4.8 | -2.8 | 10.3 (1998) |
| march | -31.3 (1853) | -3.8 | -1.4 | 1.2 | 15.1 (2007) |
| april | -19.8 (1845) | 1.1 | 4.4 | 8.1 | 21.9 (1993) |
| may | -7.0 (1852) | 6.7 | 10.7 | 14.8 | 27.6 (1963) |
| june | -0.5 (1899) | 11.6 | 15.1 | 19.0 | 30.9 (1936) |
| july | 4.9 (1857) | 14.6 | 18.1 | 21.9 | 33.2 (2019) |
| august | 2.1 (1869) | 13.3 | 16.5 | 19.8 | 31.2 (1975) |
| september | -4.5 (1986) | 8.7 | 11.5 | 14.5 | 26.2 (1968) |
| october | -13.9 (1880) | 3.4 | 5.6 | 8.0 | 17.6 (1851) |
| november | -25.5 (1852) | -0.6 | 1.3 | 3.1 | 13.4 (2015) |
| december | -35.0 (1876) | -3.8 | -1.9 | -0.1 | 10.5 (2015) |
| year | () | () |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 53 | 5 (1996) | 111 (1921) | 25 (1893) |
| february | 40 | 1 (1994) | 110 (1957) | 30 (1891) |
| march | 33 | 3 (1964) | 138 (1898) | 35 (1859) |
| april | 36 | 2 (1902) | 101 (1977) | 37 (1933) |
| may | 38 | 1 (1901) | 106 (1928) | 38 (1930) |
| june | 63 | 4 (1855) | 163 (1961) | 70 (1862) |
| july | 63 | 2 (1994) | 192 (1883) | 88 (1960) |
| august | 75 | 1 (1996) | 196 (1972) | 60 (1960) |
| september | 59 | 5 (2002) | 160 (2012) | 57 (1962) |
| october | 79 | 7 (1861) | 184 (2006) | 54 (1908) |
| november | 71 | 7 (1993) | 160 (1996) | 37 (1944) |
| december | 62 | 8 (1903) | 132 (1931) | 40 (1914) |
| year | () | () | () |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |