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

August weather forecast and climate
Jamestown, Saint Helena, Ascension and Tristan da Cunha

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
August, the last month of the winter, in Jamestown, is also an agreeable month, with average temperature fluctuating between 22°C (71.6°F) and 17°C (62.6°F).

Temperature

July through September, with an average high-temperature of 22°C (71.6°F), are the coldest months.

Rainfall

In Jamestown, in August, during 3 rainfall days, 10mm (0.4") of precipitation is typically accumulated. In Jamestown, during the entire year, the rain falls for 40.7 days and collects up to 113mm (4.4") of precipitation.

Daylight

The average length of the day in August is 11.6h.

What is the coldest month in Jamestown?

The coldest months in Jamestown, Saint Helena, Ascension and Tristan da Cunha, are July through September, with an average high-temperature of 22°C (71.6°F).

What is the temperature in August in Jamestown?

In August, in Jamestown, Saint Helena, Ascension and Tristan da Cunha, the average high-temperature is 22°C (71.6°F), and the average low-temperature is 17°C (62.6°F).

How many days does it rain in August in Jamestown?

In August, in Jamestown, the rain falls for 3 days. Throughout August, 10mm (0.4") of precipitation is accumulated.

How many hours of daylight does Jamestown have in August?

In Jamestown, Saint Helena, Ascension and Tristan da Cunha, the average length of the day in August is 11.6h.
Average temperature in August - Jamestown, Saint Helena, Ascension and Tristan da Cunha
  • Average high temperature in August: 22°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).

  • Average low temperature in August: 17°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).

Average rainfall in August - Jamestown, Saint Helena, Ascension and Tristan da Cunha
  • Average rainfall in August: 10mm

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

Average rainfall days in August - Jamestown, Saint Helena, Ascension and Tristan da Cunha
  • Average rainfall days in August: 3 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).

Average daylight in August - Jamestown, Saint Helena, Ascension and Tristan da Cunha
  • Average daylight in August: 11.6h

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