Annual mean 25°C · wettest around August · prevailing wind N
Warmest
30.5 °C
Coldest
23.7 °C
Wettest
99%
Windiest
4.7 m/s
Prevailing
N
3.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Ascensión over the whole year is 25°C. September is the hottest month, with highs of about 31°C; July is the coldest, with lows of about 18°C. The rainy (wet) season in Ascensión runs from August to April, peaking in August with a 79% chance of rain on a given day. The dry season is May to July; July is the driest month, at 54%. Winds in Ascensión are highest in July, averaging 3.2 m/s (12 km/h), and lightest in February, at 2.3 m/s (8 km/h). The prevailing wind is from the N. The clearest skies in Ascensión come in September, when the sky is typically 33% covered; December is the cloudiest month, at 70%.
Month by month Ascensión climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
29°C
24°C
31°C
75%
68%
2.6 m/s
12
48
2
February
29°C
24°C
31°C
72%
65%
2.3 m/s
12
47
3
March
29°C
24°C
31°C
73%
65%
2.4 m/s
16
44
6
April
28°C
23°C
30°C
76%
61%
2.8 m/s
20
43
10
May
26°C
20°C
27°C
64%
60%
2.9 m/s
37
41
25
June
25°C
18°C
24°C
66%
52%
2.7 m/s
40
46
30
July
27°C
18°C
25°C
54%
39%
3.2 m/s
35
52
26
August
29°C
20°C
27°C
79%
38%
3.2 m/s
31
43
24
September
31°C
23°C
30°C
75%
33%
3.2 m/s
25
37
15
October
31°C
25°C
32°C
77%
47%
3.1 m/s
15
34
8
November
30°C
24°C
31°C
74%
57%
2.8 m/s
16
36
7
December
29°C
24°C
31°C
76%
70%
2.5 m/s
13
45
3
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Ascensión weather by season
Year round, Ascensión has days of about 25°C at their warmest in June, its coolest month, and 31°C in September, its warmest; the coolest hours of the day run from 18°C to 25°C through the year, and the average temperature over the year is 25°C around the clock. Rain is most likely around August and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Ascensión weather in winterJune to August
High 27°CLow 19°CRain 66%
Winter in Ascensión has typical daily highs of about 27°C and lows of about 19°C, with a 66% chance of rain on a given day.
Ascensión weather in springSeptember to November
High 31°CLow 24°CRain 76%
Spring in Ascensión has typical daily highs of about 31°C and lows of about 24°C, with a 76% chance of rain on a given day.
Ascensión weather in summerDecember to February
High 29°CLow 24°CRain 74%
Summer in Ascensión has typical daily highs of about 29°C and lows of about 24°C, with a 74% chance of rain on a given day.
Ascensión weather in autumnMarch to May
High 27°CLow 22°CRain 71%
Autumn in Ascensión has typical daily highs of about 27°C and lows of about 22°C, with a 71% chance of rain on a given day.
When is the rainy season in Ascensión?
The rainy (wet) season in Ascensión runs from August to April, peaking in August with a 79% chance of rain on a given day. The dry season is May to July; July is the driest month, at 54%.
What time of year is Ascensión windiest?
Winds in Ascensión are highest in July, averaging 3.2 m/s (12 km/h), and lightest in February, at 2.3 m/s (8 km/h). The prevailing wind is from the N.
What is the average temperature in Ascensión year round?
The average temperature in Ascensión over the whole year is 25°C. September is the hottest month, with highs of about 31°C; July is the coldest, with lows of about 18°C.