Ascension Island Climate Guide to the Average Weather & Temperatures with Graphs Elucidating Sunshine and Rainfall Data & Information about Wind Speeds & Humidity:

  • Georgetown, Ascension Island latitude & longitude; 7°55'S 14°25'W.
  • Altitude; 17 m (56 ft).
  • The average temperature in Ascension Island is 26.0 °C (79 °F).
  • The range of average monthly temperatures is 2 °C.
  • The warmest average max/ high temperature is 31 °C (88 °F) in February, March, April, May.
  • The coolest average min/ low temperature is 22 °C (72 °F) in July, August, September, October, November & December.
  • Ascension Island receives on average 142 mm (5.6 in) of precipitation annually or 12 mm (0.5 in) each month.
  • On balance there are 30 days annually on which greater than 0.1 mm (0.004 in) of precipitation (rain, sleet, snow or hail) occurrs or 3 days on an average month.
  • The month with the driest weather is January, November & December when on balance 4 mm (0.2 in) of rainfall (precipitation) occurrs.
  • The month with the wettest weather is April when on balance 33 mm (1.3 in) of rain, sleet, hail or snow falls across 4 days.
  • Mean relative humidity for an average year is recorded as 68.7% and on a monthly basis it ranges from 67% in July to 70% in January.
  • There is an average range of hours of sunshine in Ascension Island of between 5.2 hours per day in October and 8.9 hours per day in March.
  • On balance there are 2659 sunshine hours annually and approximately 7.3 sunlight hours for each day.

Ascension Island Climate Graph (Metric | Imperial units)

Ascension Island Climate Graph

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Ascension Island Weather Averages

  Average Minimum Temperatures in Ascension Island, Ascension Island (°C) Average Maximum Temperature in Ascension Island, Ascension Island (°C) Ascension Island Average Temperature (°C) Average Sea Temp (°C) Average Rainfall/ Precipitation (mm) Wet Days (>0.1 mm) Average Sunlight Hours/ Day Relative Humidity (%) Average Wind Speed in Ascension Island (Beaufort) Average Number of Days with Frost  
Weather in Ascension Island in January 23 30 26 - 4 2 7.4 70 2 0 Average Temperature in Ascension Island in January
Weather in Ascension Island in February 23 31 27 - 10 2 7.9 69 2 0 Average Temperature in Ascension Island in February
Weather in Ascension Island in March 24 31 27 - 18 3 8.9 69.0 2 0 Average Temperature in Ascension Island in March
Weather in Ascension Island in April 24 31 27 - 33 4 8.9 69 2 0 Average Temperature in Ascension Island in April
Weather in Ascension Island in May 24 31 27 - 16 3 8.5 68 2 0 Average Temperature in Ascension Island in May
Weather in Ascension Island in June 23 30 26 - 15 3 8.7 68 2 0 Average Temperature in Ascension Island in June
Weather in Ascension Island in July 22 29 26 - 12 3 7.7 67 2 0 Average Temperature in Ascension Island in July
Weather in Ascension Island in August 22 28 25 - 11 3 7.0 68 2 0 Average Temperature in Ascension Island in August
Weather in Ascension Island in September 22 28 25 - 8 2 5.5 69 2 0 Average Temperature in Ascension Island in September
Weather in Ascension Island in October 22 28 25 - 7 3 5.2 69 2 0 Average Temperature in Ascension Island in October
Weather in Ascension Island in November 22 28 25 - 4 1 5.3 69 2 0 Average Temperature in Ascension Island in November
Weather in Ascension Island in December 22 29 26 - 4 1 6.4 69 2 0 Average Temperature in Ascension Island in December

Ascension Island Climograph/ Climate Chart (imperial)

Ascension Island Temperature Chart

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Ascension Island Temperatures in Farenheit

  Average Minimum Temperatures in Ascension Island, Ascension Island (°F) Average Maximum Temperature in Ascension Island, Ascension Island (°F) Average Temperature (°F) Average Sea Temp (°F) Average Rainfall (in) Wet Days (>0.004 in) Average Sunlight Hours/ Day Relative Humidity (%) Average Wind Speed (Beaufort) Average Number of Days with Frost  
Temperatures in Ascension Island in January 73 86 79 - 0.2 2 7.4 70 2 0 Climate in Ascension Island in January
Temperatures in Ascension Island in February 73 88 81 - 0.4 2 7.9 69 2 0 Climate in Ascension Island in February
Temperatures in Ascension Island in March 75 88 81 - 0.7 3 8.9 69 2 0 Climate in Ascension Island in March
Temperatures in Ascension Island in April 75 88 81 - 1.3 4 8.9 69 2 0 Climate in Ascension Island in April
Temperatures in Ascension Island in May 75 88 81 - 0.6 3 8.5 68 2 0 Climate in Ascension Island in May
Temperatures in Ascension Island in June 73 86 79 - 0.6 3 8.7 68 2 0 Climate in Ascension Island in June
Temperatures in Ascension Island in July 72 84 79 - 0.5 3 7.7 67 2 0 Climate in Ascension Island in July
Temperatures in Ascension Island in August 72 82 77 - 0.4 3 7.0 68 2 0 Climate in Ascension Island in August
Temperatures in Ascension Island in September 72 82 77 - 0.3 2 5.5 69 2 0 Climate in Ascension Island in September
Temperatures in Ascension Island in October 72 82 77 - 0.3 3 5.2 69 2 0 Climate in Ascension Island in October
Temperatures in Ascension Island in November 72 82 77 - 0.2 1 5.3 69 2 0 Climate in Ascension Island in November
Temperatures in Ascension Island in December 72 84 79 - 0.2 1 6.4 69 2 0 Climate in Ascension Island in December

Forum: Ascension Island, Ascension Island

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