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Climate & Weather Averages in Jamestown, Saint Helena

Now
71 °F

Overcast.


Feels Like: 75 °F
Forecast: 75 / 73 °F
Wind: 9 mph from East

Location: Saint Helena Island

Current Time: Jan 22, 2019 at 11:24:21 am

Latest Report: Jan 22, 2019 at 10:00 am


Visibility: 31 mi

Pressure: N/A

Humidity: 67%

Dew Point: 59 °F

Location of JamestownLocation

Annual Weather Averages Near Jamestown

Averages are for Saint Helena Island, which is 4 miles from Jamestown.

Based on weather reports collected during 2005–2015.

All Year Climate & Weather Averages in Jamestown

High Temp: 76 °F

Low Temp: 57 °F

Mean Temp: 65 °F

Precipitation: 1.85"

Humidity: 84%

Dew Point: 60 °F

Wind: 14 mph

Pressure: 30.05 "Hg

Visibility: 14 mi

January Climate & Weather Averages in Jamestown

High Temp: 73 °F

Low Temp: 64 °F

Mean Temp: 68 °F

Precipitation: 1.67"

Humidity: 85%

Dew Point: 62 °F

Wind: 13 mph

Pressure: 29.99 "Hg

Visibility: 14 mi

February Climate & Weather Averages in Jamestown

High Temp: 74 °F

Low Temp: 66 °F

Mean Temp: 70 °F

Precipitation: 2.04"

Humidity: 86%

Dew Point: 65 °F

Wind: 13 mph

Pressure: 29.97 "Hg

Visibility: 16 mi

March Climate & Weather Averages in Jamestown

High Temp: 76 °F

Low Temp: 67 °F

Mean Temp: 72 °F

Precipitation: 2.08"

Humidity: 85%

Dew Point: 65 °F

Wind: 13 mph

Pressure: 29.97 "Hg

Visibility: 15 mi

April Climate & Weather Averages in Jamestown

High Temp: 74 °F

Low Temp: 67 °F

Mean Temp: 70 °F

Precipitation: 1.60"

Humidity: 83%

Dew Point: 64 °F

Wind: 14 mph

Pressure: 30.00 "Hg

Visibility: 14 mi

May Climate & Weather Averages in Jamestown

High Temp: 71 °F

Low Temp: 63 °F

Mean Temp: 67 °F

Precipitation: 1.88"

Humidity: 82%

Dew Point: 61 °F

Wind: 12 mph

Pressure: 30.04 "Hg

Visibility: 18 mi

June Climate & Weather Averages in Jamestown

High Temp: 67 °F

Low Temp: 60 °F

Mean Temp: 64 °F

Precipitation: 2.82"

Humidity: 82%

Dew Point: 57 °F

Wind: 14 mph

Pressure: 30.11 "Hg

Visibility: 16 mi

July Climate & Weather Averages in Jamestown

High Temp: 66 °F

Low Temp: 59 °F

Mean Temp: 63 °F

Precipitation: 2.35"

Humidity: 83%

Dew Point: 57 °F

Wind: 15 mph

Pressure: 30.14 "Hg

Visibility: 13 mi

August Climate & Weather Averages in Jamestown

High Temp: 64 °F

Low Temp: 57 °F

Mean Temp: 61 °F

Precipitation: 2.36"

Humidity: 84%

Dew Point: 55 °F

Wind: 16 mph

Pressure: 30.13 "Hg

Visibility: 12 mi

September Climate & Weather Averages in Jamestown

High Temp: 64 °F

Low Temp: 57 °F

Mean Temp: 60 °F

Precipitation: 1.80"

Humidity: 86%

Dew Point: 56 °F

Wind: 16 mph

Pressure: 30.11 "Hg

Visibility: 9 mi

October Climate & Weather Averages in Jamestown

High Temp: 65 °F

Low Temp: 58 °F

Mean Temp: 61 °F

Precipitation: 1.35"

Humidity: 87%

Dew Point: 56 °F

Wind: 17 mph

Pressure: 30.08 "Hg

Visibility: 10 mi

November Climate & Weather Averages in Jamestown

High Temp: 66 °F

Low Temp: 59 °F

Mean Temp: 63 °F

Precipitation: 0.89"

Humidity: 85%

Dew Point: 57 °F

Wind: 15 mph

Pressure: 30.05 "Hg

Visibility: 12 mi

December Climate & Weather Averages in Jamestown

High Temp: 69 °F

Low Temp: 61 °F

Mean Temp: 65 °F

Precipitation: 1.33"

Humidity: 84%

Dew Point: 59 °F

Wind: 13 mph

Pressure: 30.02 "Hg

Visibility: 14 mi

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Quick Climate Info

Hottest MonthMarch (72 °F avg)
Coldest MonthSeptember (60 °F avg)
Wettest MonthJune (2.82" avg)
Windiest MonthOctober (17 mph avg)
Annual Rainfall22.15" (per year)

Weather by CustomWeather, © 2019