Common information

Country
France
Population
47 013

Weather, climate, temperature by months in Boulogne-sur-Mer

Season Autumn Winter Spring Summer
Month Sep Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Year
Record high, °C 31 27 19 17 15 17 23 26 31 33 34 35 35
Average high, °C 18 15 11 8 7 7 9 12 15 18 20 21 13
Average temperature, °C 16 12 8 6 5 5 7 9 13 15 17 18 11
Average low, °C 13 10 6 4 3 3 5 6 10 12 14 15 8
Record low, °C 6 -1 -6 -10 -13 -14 -8 -2 2 4 8 9 -14
Rain, days 15 16 17 16 16 10 17 14 15 12 13 11 172
Snow, days 0 0 1 1 2 3 1 1 0 0 0 0 9
Fog, days 8 8 9 10 10 13 14 11 10 11 11 10 125
Thunderstorms, days 1 1 0 0 0 0 0 0 1 1 1 1 6
Average precipitation, mm. 69 95 97 87 68 47 53 51 56 51 54 51 778
Relative humidity, % 84 85 87 89 91 89 88 84 82 82 84 83 86
Relative humidity morning, % 89 88 88 89 90 88 88 87 87 89 89 89 88
Relative humidity evening, % 77 78 83 86 86 82 80 76 76 77 77 75 79
Wind speed, km/h 27 32 32 32 32 16 28 20 19 22 25 19 25
Monthly sunshine, часов 248 175 147 135 151 169 225 228 273 315 357 321 2744
Day Length, часов 13 11 10 9 9 11 13 15 16 17 17 15 13
Dew point, °C 12 8 6 3 2 1 3 5 8 11 13 13 85
Growing degree-day, °C 158 60 0 0 0 0 0 0 60 133 215 224 851
Solar radiation, global, Mj/m2 12 7 4 2 3 6 10 16 20 21 20 18 11

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