Annual mean 27°C · wettest around March · prevailing wind NE
Warmest
31.4 °C
Coldest
27.9 °C
Wettest
90%
Windiest
3.7 m/s
Prevailing
NE
2.9 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
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 Santa Helena over the whole year is 27°C. October is the hottest month, with highs of about 31°C; February is the coldest, with lows of about 25°C. The rainy (wet) season in Santa Helena runs from January to July, peaking in March with a 76% chance of rain on a given day. The dry season is August to December; September is the driest month, at 35%. Winds in Santa Helena are highest in September, averaging 2.9 m/s (10 km/h), and lightest in April, at 1.5 m/s (5 km/h). The prevailing wind is from the NE. The clearest skies in Santa Helena come in August, when the sky is typically 44% covered; March is the cloudiest month, at 79%.
Month by month Santa Helena 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
26°C
33°C
68%
71%
2.2 m/s
4
52
0
February
28°C
25°C
32°C
71%
77%
1.9 m/s
4
51
0
March
28°C
25°C
32°C
76%
79%
1.7 m/s
3
49
0
April
29°C
25°C
33°C
71%
75%
1.5 m/s
2
44
0
May
29°C
26°C
34°C
71%
67%
1.6 m/s
2
38
0
June
29°C
25°C
33°C
70%
59%
1.7 m/s
1
44
0
July
30°C
25°C
33°C
67%
51%
1.9 m/s
1
47
0
August
31°C
26°C
33°C
55%
44%
2.4 m/s
0
46
0
September
31°C
26°C
34°C
35%
46%
2.9 m/s
0
47
0
October
31°C
26°C
34°C
40%
47%
2.9 m/s
0
42
0
November
31°C
26°C
34°C
52%
51%
2.9 m/s
0
41
0
December
31°C
27°C
34°C
51%
61%
2.7 m/s
1
45
0
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 Santa Helena weather by season
Year round, Santa Helena has days of about 28°C at their warmest in March, its coolest month, and 31°C in October, its warmest; the coolest hours of the day run from 25°C to 27°C through the year, and the average temperature over the year is 27°C around the clock. Rain is most likely around March and least likely around September. 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.
Santa Helena weather in winterJune to August
High 30°CLow 25°CRain 64%
Winter in Santa Helena has typical daily highs of about 30°C and lows of about 25°C, with a 64% chance of rain on a given day.
Santa Helena weather in springSeptember to November
High 31°CLow 26°CRain 42%
Spring in Santa Helena has typical daily highs of about 31°C and lows of about 26°C, with a 42% chance of rain on a given day.
Santa Helena weather in summerDecember to February
High 29°CLow 26°CRain 63%
Summer in Santa Helena has typical daily highs of about 29°C and lows of about 26°C, with a 63% chance of rain on a given day.
Santa Helena weather in autumnMarch to May
High 29°CLow 25°CRain 73%
Autumn in Santa Helena has typical daily highs of about 29°C and lows of about 25°C, with a 73% chance of rain on a given day.
When is the rainy season in Santa Helena?
The rainy (wet) season in Santa Helena runs from January to July, peaking in March with a 76% chance of rain on a given day. The dry season is August to December; September is the driest month, at 35%.
What time of year is Santa Helena windiest?
Winds in Santa Helena are highest in September, averaging 2.9 m/s (10 km/h), and lightest in April, at 1.5 m/s (5 km/h). The prevailing wind is from the NE.
What is the average temperature in Santa Helena year round?
The average temperature in Santa Helena over the whole year is 27°C. October is the hottest month, with highs of about 31°C; February is the coldest, with lows of about 25°C.