Tallinn
Estonia
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 28 | 20 | 13 | 8 | 7 | 11 | 16 | 26 | 29 | 32 | 32 | 32 | 32 |
| Average high, °C | 14 | 8 | 2 | -1 | -3 | -3 | 1 | 8 | 15 | 19 | 21 | 20 | 9 |
| Average temperature, °C | 10 | 5 | -0 | -4 | -6 | -6 | -2 | 4 | 10 | 14 | 16 | 15 | 5 |
| Average low, °C | 6 | 2 | -3 | -7 | -9 | -9 | -6 | -0 | 4 | 9 | 11 | 10 | 1 |
| Record low, °C | -4 | -13 | -22 | -41 | -34 | -36 | -27 | -14 | -7 | -2 | 2 | -1 | -41 |
| Rain, days | 19 | 19 | 14 | 9 | 9 | 7 | 9 | 11 | 15 | 17 | 16 | 17 | 162 |
| Snow, days | 0 | 4 | 15 | 22 | 23 | 22 | 15 | 6 | 1 | 0 | 0 | 0 | 108 |
| Fog, days | 5 | 4 | 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 5 | 38 |
| Thunderstorms, days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 5 | 5 | 4 | 20 |
| Average precipitation, mm. | 77 | 77 | 63 | 50 | 39 | 30 | 34 | 37 | 41 | 70 | 84 | 94 | 696 |
| Relative humidity, % | 83 | 86 | 89 | 89 | 87 | 86 | 81 | 74 | 67 | 73 | 77 | 80 | 81 |
| Relative humidity morning, % | 93 | 90 | 89 | 88 | 86 | 87 | 88 | 85 | 84 | 88 | 92 | 94 | 89 |
| Relative humidity evening, % | 70 | 76 | 86 | 86 | 83 | 78 | 68 | 56 | 49 | 56 | 61 | 65 | 70 |
| Wind speed, km/h | 14 | 16 | 18 | 18 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 12 | 15 |
| Monthly sunshine, часов | 133 | 76 | 27 | 17 | 30 | 60 | 124 | 178 | 275 | 284 | 287 | 231 | 1721 |
| Day Length, часов | 14 | 11 | 8 | 7 | 8 | 10 | 13 | 15 | 18 | 20 | 19 | 16 | 13 |
| Dew point, °C | 7 | 2 | -1 | -6 | -8 | -8 | -5 | -1 | 3 | 8 | 12 | 11 | 14 |
| Growing degree-day, °C | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 126 | 192 | 158 | 479 |
| Atmosphere pressure, bar | 1004 | 1005 | 1003 | 1001 | 1004 | 1005 | 1006 | 1005 | 1008 | 1004 | 1003 | 1004 | 12052 |
| Solar radiation, global, Mj/m2 | 10 | 5 | 2 | 1 | 1 | 4 | 8 | 14 | 20 | 21 | 20 | 16 | 10 |