Jamestown
Saint Helena, Ascension and Tristan da Cunha
Long-term weather forecast
Long-term weather forecast
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May weather forecast and Climate
Jamestown, Saint Helena, Ascension and Tristan da Cunha

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The valley town of Jamestown in Saint Helena, with a view of mountain slopes on both sides
The valley town of Jamestown in Saint Helena, with a view of mountain slopes on both sides
  • The average high temperature in May: 24°C

The warmest month (with the highest average high temperature) is March (28°C).
Months with the lowest average high temperature are July, August and September (22°C).

  • The average low temperature in May: 19°C

The month with the highest average low temperature is March (22°C).
Coldest months (with the lowest average low temperature) are July, August and September (17°C).

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  • The average rainfall in May: 18mm

The wettest month (with the highest rainfall) is March (20mm).
The driest month (with the lowest rainfall) is November (0mm).

  • The average rainfall days in May: 4 days

The month with the highest number of rainy days is July (8 days).
The month with the lowest number of rainy days is November (0 days).

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