Weather Averages Ascension Island, Ascension Island

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Weather Averages for
Ascension Island, Ascension Island


Latitude: 7°58'S, Longitude: 14°24'W, Elevation: 259.0 ft, Distance: 2.30 mi

  Unit Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average temperature
over 19 years
°F 78 78 80 82 82 80 78 77 75 75 75 75 77
Average high temperature
over 19 years
°F 80 82 84 84 84 84 82 80 78 78 78 78 80
Average low temperature
over 19 years
°F 75 75 77 78 78 77 75 73 73 71 71 73 73
Highest recorded temperature
over 19 years
°F 89 86 87 87 89 87 86 82 82 82 84 84 86
Lowest recorded temperature
over 19 years
°F 59 69 68 73 71 69 69 64 66 59 62 68 64
Average precipitation
over 12 years
in 6.5 0.3 0.4 0.9 1.3 0.5 0.7 0.5 0.5 0.3 0.5 0.3 0.3
Average dew point
over 13 years
°F 66 68 69 71 71 69 66 64 64 64 64 66 66
Average number of days with fog
over 18 years
days 1 - - - - - - - - - - - -
Average morning relative humidity
over 10 years
% 77 81 81 81 79 76 74 73 75 76 76 80 79
Average evening relative humidity
over 18 years
% 63 64 63 64 64 62 61 61 62 63 63 65 64
Average wind speed
over 14 years
mph 17.0 17.0 16.0 16.0 17.0 17.0 17.0 17.0 17.0 17.0 17.0 17.0 17.0
Average number of days with precipitation
over 18 years
days 128 9 7 10 9 8 10 11 12 13 13 15 11
Average number of days with blowing dust/sand
over 18 years
days 1 - - - - - - 1 - - - - -
Average number of days with smoke/haze
over 18 years
days 1 - - - - - - 1 - - - - -
Average number of days above 85°F
over 19 years
days 58 1 9 21 20 7 - - - - - - -
Average number of days below 75°F
over 19 years
days 222 19 5 1 1 2 16 29 31 30 31 30 28
Average number of days with vision obstruction
over 18 years
days 1 - - - - - - 1 - - - - -