Common information
CountryPortugal
Population26 364
Weather, climate, temperature by months in Viseu
Season | Autumn | Winter | Spring | Summer | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
Record high, °C | 40 | 31 | 25 | 23 | 20 | 23 | 27 | 30 | 33 | 39 | 41 | 40 | 41 |
Average high, °C | 26 | 20 | 15 | 12 | 12 | 13 | 16 | 17 | 20 | 25 | 29 | 29 | 20 |
Average temperature, °C | 19 | 14 | 10 | 8 | 7 | 8 | 10 | 12 | 14 | 18 | 21 | 21 | 14 |
Average low, °C | 12 | 9 | 5 | 4 | 2 | 4 | 5 | 6 | 9 | 12 | 14 | 13 | 8 |
Record low, °C | 2 | -3 | -4 | -5 | -7 | -7 | -5 | -4 | -1 | 2 | 1 | 6 | -7 |
Rain, days | 8 | 0 | 0 | 0 | 0 | 11 | 0 | 10 | 9 | 7 | 4 | 3 | 52 |
Fog, days | 5 | 5 | 8 | 11 | 10 | 5 | 4 | 4 | 6 | 7 | 5 | 8 | 78 |
Thunderstorms, days | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 2 | 2 | 1 | 9 |
Average precipitation, mm. | 57 | 133 | 136 | 195 | 156 | 134 | 75 | 105 | 96 | 46 | 19 | 18 | 1170 |
Relative humidity, % | 65 | 75 | 81 | 81 | 82 | 78 | 78 | 74 | 71 | 65 | 56 | 53 | 72 |
Relative humidity morning, % | 83 | 89 | 91 | 91 | 91 | 88 | 86 | 86 | 88 | 85 | 82 | 83 | 87 |
Relative humidity evening, % | 46 | 63 | 72 | 76 | 75 | 68 | 60 | 59 | 57 | 51 | 44 | 43 | 60 |
Wind speed, km/h | 6 | 6 | 4 | 4 | 4 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 7 |
Day Length, of hours | 13 | 12 | 10 | 10 | 10 | 11 | 12 | 14 | 15 | 16 | 15 | 14 | 13 |
Dew point, °C | 6 | 5 | 2 | 0 | 0 | 0 | 0 | 1 | 3 | 6 | 6 | 6 | 35 |
Growing degree-day, °C | 264 | 128 | 4 | 0 | 0 | 0 | 8 | 47 | 135 | 253 | 352 | 344 | 1536 |
Solar radiation, global, Mj/m2 | 17 | 10 | 7 | 6 | 7 | 10 | 14 | 17 | 21 | 25 | 26 | 23 | 15 |