Longyearbyen
Svalbard and Jan Mayen
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 12 | 12 | 7 | 7 | 10 | 8 | 10 | 9 | 8 | 12 | 16 | 18 | 18 |
| Average high, °C | 5 | 2 | -1 | -3 | -3 | -3 | -4 | -1 | 1 | 4 | 6 | 7 | 1 |
| Average temperature, °C | 1 | -1 | -5 | -7 | -8 | -8 | -8 | -6 | -3 | 0 | 2 | 3 | -3 |
| Average low, °C | 1 | -2 | -5 | -8 | -8 | -9 | -9 | -6 | -2 | 1 | 3 | 4 | -3 |
| Record low, °C | -5 | -11 | -16 | -23 | -26 | -25 | -26 | -17 | -12 | -3 | -1 | -2 | -26 |
| Fog, days | 12 | 10 | 8 | 8 | 8 | 10 | 12 | 10 | 13 | 19 | 24 | 19 | 153 |
| Average precipitation, mm. | 88 | 92 | 79 | 80 | 76 | 60 | 68 | 51 | 42 | 41 | 52 | 68 | 798 |
| Relative humidity, % | 83 | 83 | 81 | 82 | 83 | 83 | 84 | 83 | 85 | 87 | 89 | 87 | 84 |
| Relative humidity morning, % | 84 | 82 | 81 | 81 | 83 | 84 | 85 | 84 | 85 | 89 | 90 | 88 | 85 |
| Relative humidity evening, % | 83 | 82 | 81 | 81 | 83 | 84 | 84 | 82 | 84 | 86 | 87 | 85 | 84 |
| Wind speed, km/h | 17 | 19 | 20 | 22 | 22 | 21 | 21 | 17 | 14 | 14 | 14 | 15 | 18 |
| Day Length, часов | 15 | 10 | 2 | 0 | 0 | 8 | 13 | 21 | 24 | 24 | 24 | 22 | 14 |
| Dew point, °C | -1 | -4 | -7 | -9 | -10 | -10 | -10 | -8 | -5 | -2 | 1 | 1 | -65 |
| Atmosphere pressure, bar | 1006 | 1004 | 1004 | 1002 | 1003 | 1005 | 1005 | 1011 | 1015 | 1011 | 1009 | 1009 | 12084 |
| Solar radiation, global, Mj/m2 | 6 | 2 | 0 | 0 | 0 | 1 | 4 | 11 | 17 | 20 | 17 | 11 | 7 |