October weather forecast and climate
Saint Helena Island, Saint Helena, Ascension and Tristan da Cunha SH

• Average high temperature in October: 18°C

Warmest months (with the highest average high temperature) are February and March (23°C).
The month with the lowest average high temperature is August (17°C).

• Average low temperature in October: 15°C

Months with the highest average low temperature are February and March (19°C).
The coldest month (with the lowest average low temperature) is August (14°C).

• Average rainfall in October: 43mm

The wettest month (with the highest rainfall) is March (90mm).
The driest month (with the lowest rainfall) is November (30mm).

• Average rainfall days in October: 14 days

Months with the highest number of rainy days are June and July (16 days).
Months with the lowest number of rainy days are September and December (12 days).

• Average sea temperature in October: 20°C

Best months for swimming (with the highest average sea temperature) are February, March and April (25°C).
The coldest month (with the lowest average sea temperature) is October (20°C).

• Average daylight in October: 12.5h

The month with the longest days is December (Average daylight: 13.1h).
The month with shortest days is June (Average daylight: 11.2h).

• Average sunshine in October: 14h

Months with most sunshine are June and July (Average sunshine: 16h).
Months with least sunshine are September and December (Average sunshine: 12).

• Average UV index in October: 12

Months with the highest UV index are January, February, March, October, November and December (UV index 12).
The month with the lowest UV index is June (UV index 7).