The valley town of Jamestown in Saint Helena, with a view of mountain slopes on both sides
Weather in May
May signifies the true arrival of autumn in this part of the world, bringing in the lower temperatures and noticeable changes to the local flora. Prevalent in this season is the blend of both sunshine and rainfall, creating an array of rainbows that dot the overhead skies. This period is known for its mild daytime warmth, becoming treasured among those that find the summer's heat overwhelming. The rhythm of life slows down a bit, people take time to enjoy the nature around them interspersed with the occasional rain shower. In May, temperatures drop to approximately 24°C (75.2°F), rainfall increases to 18mm (0.71"), and daylight shortens to 11.4 hours.
On the first day of the month, sunrise is at 06:34 and sunset at 18:05. On the last day of May, sunrise is at 06:43 and sunset at 17:57 GMT.
Temperature
The transition to May results in a modest reduction in average high-temperature, moving from 27°C (80.6°F) in April to a still warm 24°C (75.2°F). Jamestown maintains a near steady average temperature of 19°C (66.2°F) during the nights of May, demonstrating little drop from daytime highs.Rainfall
In May, in Jamestown, the rain falls for 4 days. Throughout May, 18mm (0.71") of precipitation is accumulated. In Jamestown, Saint Helena, Ascension and Tristan da Cunha, during the entire year, the rain falls for 40.7 days and collects up to 113mm (4.45") of precipitation.Daylight
The average length of the day in May is 11h and 22min.On the first day of the month, sunrise is at 06:34 and sunset at 18:05. On the last day of May, sunrise is at 06:43 and sunset at 17:57 GMT.
Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures 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, during May, the rain falls for 4 days and regularly aggregates up to 18mm (0.71") of precipitation.
What is the average length of the day in May in Jamestown?
In May, the average day length in Jamestown is 11h and 22min.
What time are sunrise and sunset in May in Jamestown?
In May, on the first day of the month, sunrise is at 06:34 and sunset at 18:05. On the last day of the month, sunrise is at 06:43 and sunset at 17:57 GMT.
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).
The 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).
The 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 least 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 least rainy days is November (0 days).
Average daylight in May
Jamestown, Saint Helena, Ascension and Tristan da Cunha
- Average daylight in May: 11h and 2min
The month with the longest days is December (Average daylight: 13h and 6min).
The month with the shortest days is June (Average daylight: 11h and 12min).
Jamestown, Saint Helena, Ascension and Tristan da Cunha
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