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

May 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
May, the last month of the autumn, in Jamestown, is another warm month, with average temperature varying between 19°C (66.2°F) and 24°C (75.2°F).

Temperature

In May, the average high-temperature slightly decreases, from 27°C (80.6°F) in April, to a still warm 24°C (75.2°F). The average low-temperature, in May, is 19°C (66.2°F).

Rainfall

In Jamestown, it is raining for 4 days, with typically 18mm (0.7") of accumulated precipitation. Throughout the year, there are 40.7 rainfall days, and 113mm (4.4") of precipitation is accumulated.

Daylight

In Jamestown, the average length of the day in May is 11.4h.

What is the temperature in May in Jamestown?

In May, in Jamestown, the average high-temperature is 24°C (75.2°F), and the average low-temperature is 19°C (66.2°F).

How many days does it rain in May in Jamestown?

In Jamestown, Saint Helena, Ascension and Tristan da Cunha, in May, during 4 rainfall days, 18mm (0.7") of precipitation is typically accumulated.

What is the average length of the day in May in Jamestown?

The average length of the day in May in Jamestown is 11.4h.
Average temperature in May - Jamestown, Saint Helena, Ascension and Tristan da Cunha
  • 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).

  • 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).

Average rainfall in May - Jamestown, Saint Helena, Ascension and Tristan da Cunha
  • 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).

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

Average daylight in May - Jamestown, Saint Helena, Ascension and Tristan da Cunha
  • Average daylight in May: 11.4h

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