Temperature
Pleasant by day, warm at night.
75°Ftypical Aug high
Typical range
Ascension Island
St. Helena, Ascension and Tristan da Cunha
Ascension Island is most comfortable around August to November. Typical daytime highs run about 74-80°F year-round. Humidity is noticeable much of the year. Rain is rare year-round.
Best time to go
12 mo · Typical year
Temperature range
73°F to 80°F
Rain
1 day/mo
Sunshine
11.5 h/day
Humidity feel
Humid year-round
When to visit
Month-by-month fit
Precipitation
A dry month, with very little rain.
3%wet-day frequency
AmountWet-day chance
Sunshine
Some sun, but clouds are common.
11.3 hAug sunshine
Heat & humidity by month
Humid air, tempered by a steady breeze.
79%Aug share of humid air hours
Easy airWarm airHumid airVery humid air
Hourly comfort pattern
In August, afternoons feel about 70° and nights feel near 69°.
ComfortableWarmNight shading
Sea temperature
76°Aug sea temp
More detailIncludes sky, daypart comfort, and wind
Cloud cover
Partly cloudy across the month.
45%Aug clear sky
ClearCloud cover
Typical August day
August stays around 74°F through the day and night.
Avg temp Typical range
Morning74°F
Rain9%
Cloud56%
Humid airHigh
Sun intensityLow
Midday74°F
Rain6%
Cloud53%
Humid airHigh
Sun intensityStrong
Late afternoon74°F
Rain3%
Cloud51%
Humid airHigh
Sun intensityStrong
Best windowEarly evening74°F
Rain4%
Cloud51%
Humid airHigh
Sun intensityMinimal
Steady wind
August's steady trade-wind breeze keeps the air from feeling as stagnant.
18 mphAug Windy
Typical wind speed (mph)
Similar
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Want a side-by-side climate view? Compare Ascension Island with Port Louis.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 11, 2026
Data & methodology