Currently: 20 °C. Overcast. (Weather station: Saint Helena Island, Saint Helena). See more current weatherAnnual Weather Averages Near Jamestown
Averages are for Saint Helena Island, which is 6 kilometers from Jamestown.
Based on weather reports collected during 2012–2021.
All Year Climate & Weather Averages in Jamestown
High Temp: 24 °C
Low Temp: 14 °C
Mean Temp: 19 °C
Precipitation: 39.9 mm
Humidity: 85%
Dew Point: 16 °C
Wind: 43 km/h
Pressure: 1018 mbar
Visibility: 26 km
一月 Climate & Weather Averages in Jamestown
High Temp: 22 °C
Low Temp: 18 °C
Mean Temp: 20 °C
Precipitation: 35.9 mm
Humidity: 86%
Dew Point: 17 °C
Wind: 40 km/h
Pressure: 1016 mbar
Visibility: 28 km
二月 Climate & Weather Averages in Jamestown
High Temp: 23 °C
Low Temp: 19 °C
Mean Temp: 21 °C
Precipitation: 42.4 mm
Humidity: 86%
Dew Point: 18 °C
Wind: 40 km/h
Pressure: 1015 mbar
Visibility: 32 km
三月 Climate & Weather Averages in Jamestown
High Temp: 24 °C
Low Temp: 20 °C
Mean Temp: 22 °C
Precipitation: 49.9 mm
Humidity: 85%
Dew Point: 19 °C
Wind: 40 km/h
Pressure: 1015 mbar
Visibility: 31 km
四月 Climate & Weather Averages in Jamestown
High Temp: 23 °C
Low Temp: 19 °C
Mean Temp: 21 °C
Precipitation: 39.0 mm
Humidity: 84%
Dew Point: 18 °C
Wind: 39 km/h
Pressure: 1016 mbar
Visibility: 31 km
五月 Climate & Weather Averages in Jamestown
High Temp: 22 °C
Low Temp: 18 °C
Mean Temp: 20 °C
Precipitation: 30.7 mm
Humidity: 84%
Dew Point: 16 °C
Wind: 38 km/h
Pressure: 1018 mbar
Visibility: 32 km
六月 Climate & Weather Averages in Jamestown
High Temp: 20 °C
Low Temp: 16 °C
Mean Temp: 18 °C
Precipitation: 55.3 mm
Humidity: 83%
Dew Point: 15 °C
Wind: 42 km/h
Pressure: 1020 mbar
Visibility: 28 km
七月 Climate & Weather Averages in Jamestown
High Temp: 18 °C
Low Temp: 15 °C
Mean Temp: 17 °C
Precipitation: 62.2 mm
Humidity: 83%
Dew Point: 14 °C
Wind: 45 km/h
Pressure: 1021 mbar
Visibility: 25 km
八月 Climate & Weather Averages in Jamestown
High Temp: 18 °C
Low Temp: 14 °C
Mean Temp: 16 °C
Precipitation: 55.7 mm
Humidity: 85%
Dew Point: 13 °C
Wind: 48 km/h
Pressure: 1021 mbar
Visibility: 21 km
九月 Climate & Weather Averages in Jamestown
High Temp: 18 °C
Low Temp: 14 °C
Mean Temp: 16 °C
Precipitation: 46.3 mm
Humidity: 87%
Dew Point: 13 °C
Wind: 49 km/h
Pressure: 1020 mbar
Visibility: 19 km
十月 Climate & Weather Averages in Jamestown
High Temp: 18 °C
Low Temp: 15 °C
Mean Temp: 16 °C
Precipitation: 25.7 mm
Humidity: 87%
Dew Point: 14 °C
Wind: 49 km/h
Pressure: 1018 mbar
Visibility: 19 km
十一月 Climate & Weather Averages in Jamestown
High Temp: 19 °C
Low Temp: 15 °C
Mean Temp: 17 °C
Precipitation: 17.5 mm
Humidity: 85%
Dew Point: 14 °C
Wind: 46 km/h
Pressure: 1017 mbar
Visibility: 23 km
十二月 Climate & Weather Averages in Jamestown
High Temp: 21 °C
Low Temp: 16 °C
Mean Temp: 19 °C
Precipitation: 17.5 mm
Humidity: 84%
Dew Point: 15 °C
Wind: 43 km/h
Pressure: 1017 mbar
Visibility: 29 km