Jamestown Weather and Climate: A Comprehensive Guide
Jamestown has a steady warm climate throughout the year.
It experiences desert-like conditions in terms of precipitation, with almost no rainfall.
Let's now guide you through the climate details for a complete overview.
Average maximum day and minimum night temperature
The temperature in Jamestown remains steady throughout the year, providing a consistently comfortable climate. Typically, average maximum daytime temperatures range from a comfortable 26°C in March to a pleasant 21°C in the coolest month, September.
Nights are cooler, with lows often dropping to around 19°C during the colder months.Check out our detailed temperature page for more information.
Temperature ranges by month
Precipitation and rainy days
Jamestown has a dry climate with very low precipitation, averaging 154 mm of rainfall annually. Jamestown offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between March (17 mm) and November (9.4 mm) is not too significant, making the climate enjoyable for visitors and residents alike.
The mean monthly precipitation over the year, including rain, hail and snow
Average humidity
The relative humidity is high throughout the year in Jamestown .
The city experiences its highest humidity in August, reaching 76%. In January, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Forecast for Jamestown
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Jamestown in Saint Helena
Other facts from our historical weather data:March has an average maximum temperature of 26°C and is the warmest month of the year.
The coldest month is September with an average maximum temperature of 21°C.
March tops the wettest month list with 17 mm of rainfall.
November is the driest month with 9 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.