Last updated: May 6, 2024
Under the Köppen–Geiger climate classification Ascension features a tropical savanna climate (Aw).Temperatures typically range between 22 °C (71 °F) and 27 °C (81 °F) through the year, but rarely can drop to 5 °C (42 °F) or can rise to as high as 39 °C (102 °F).The average annual precipitation amounts to about 1403 mm (55.2 inches) and receives 158 rainy days on the 1 mm (0.04 inches) threshold annually.Ascension enjoys an average of 3304 hours of sunshine throughout the year, and daylight varies from 11 hours 11 minutes to 13 hours 1 minutes per day.
The warmest months in Ascension are September, October and November, with daily mean temperatures ranging from 26 to 27 °C (80 - 81 °F) throughout the day. The coldest temperatures usually occur in May, June and July, when daily mean temperatures range from 22 to 23 °C (71 - 74 °F) throughout the day. On average each year, Ascension experiences 301 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum | 35°C (95°F) | 34°C (93°F) | 35°C (95°F) | 34°C (93°F) | 33°C (91°F) | 32°C (90°F) | 33°C (92°F) | 36°C (97°F) | 38°C (100°F) | 38°C (101°F) | 39°C (102°F) | 35°C (95°F) |
Mean maximum | 34°C (93°F) | 34°C (93°F) | 34°C (93°F) | 33°C (91°F) | 32°C (90°F) | 30°C (86°F) | 33°C (91°F) | 35°C (96°F) | 36°C (98°F) | 37°C (99°F) | 36°C (96°F) | 34°C (94°F) |
Average high | 30°C (87°F) | 30°C (86°F) | 30°C (86°F) | 30°C (85°F) | 28°C (83°F) | 27°C (81°F) | 28°C (83°F) | 30°C (87°F) | 33°C (92°F) | 33°C (91°F) | 31°C (88°F) | 30°C (86°F) |
Daily mean | 26°C (79°F) | 26°C (79°F) | 26°C (78°F) | 25°C (77°F) | 23°C (74°F) | 22°C (71°F) | 22°C (72°F) | 24°C (75°F) | 27°C (80°F) | 27°C (81°F) | 26°C (80°F) | 26°C (79°F) |
Average low | 23°C (74°F) | 23°C (73°F) | 22°C (73°F) | 21°C (71°F) | 19°C (67°F) | 17°C (63°F) | 17°C (62°F) | 18°C (65°F) | 21°C (71°F) | 22°C (73°F) | 22°C (73°F) | 23°C (73°F) |
Mean minimum | 21°C (70°F) | 20°C (69°F) | 19°C (67°F) | 16°C (61°F) | 12°C (53°F) | 12°C (55°F) | 9°C (49°F) | 11°C (52°F) | 16°C (62°F) | 18°C (65°F) | 18°C (65°F) | 20°C (69°F) |
Minimum | 18°C (65°F) | 19°C (66°F) | 16°C (61°F) | 13°C (55°F) | 7°C (44°F) | 11°C (52°F) | 5°C (42°F) | 8°C (46°F) | 11°C (53°F) | 16°C (60°F) | 16°C (61°F) | 19°C (66°F) |
Compare temperature, precipitation, sunshine, UV index in Ascension, Santa Cruz, Bolivia with other places around the world.
Ascension usually has the most precipitation in February, November and December, with an average of 21 rainy days and 221 mm (8.7 inches) of precipitation per month.The driest months in Ascension are July, August and September. On average, 21 mm (0.8 inches) of precipitation falls during these months.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Average precipitation mm (inches) | 184 (7.2) | 218 (8.6) | 181 (7.1) | 117 (4.6) | 60 (2.4) | 38 (1.5) | 6 (0.2) | 27 (1.0) | 30 (1.2) | 98 (3.9) | 194 (7.6) | 250 (9.9) |
Average precipitation days (≥ 1 mm) | 20 | 23 | 23 | 16 | 10 | 4 | 0 | 3 | 5 | 12 | 18 | 24 |
The sunniest months in Ascension are July, August and September, when the sun shines an average of 10 hours 6 minutes a day.Least sunny months in Ascension: January, February and December receive an average of 7 hours 40 minutes of sunshine daily.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean monthly sunshine hours | 222 | 236 | 276 | 282 | 281 | 283 | 316 | 308 | 304 | 300 | 251 | 239 |
Mean daily daylight hours | 12h 55m | 12h 35m | 12h 9m | 11h 42m | 11h 21m | 11h 11m | 11h 17m | 11h 35m | 12h 0m | 12h 26m | 12h 50m | 13h 1m |
Ascension experiences the highest level of ultraviolet (UV) radiation in March, November and December, when the maximum UV index can reach values of 15 - 16, which corresponds to the Extreme category of sun exposure.May, June and July are in the Very High exposure category. In these months, the maximum values of the UV index do not exceed 10. For more detailed information, check out our hourly Ascension UV Index data.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
UV Index (month maximum) | 15 | 15 | 15 | 13 | 10 | 9 | 9 | 10 | 11 | 15 | 15 | 16 |