The bar chart below shows the average monthly peak daytime temperatures at Jamestown
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 5.8 | 8.4 | 14.3 | 20 | 24.6 | 28.6 | 30.5 | 29.9 | 26.7 | 20.8 | 14.4 | 8.4 |
°F | 42.5 | 47.1 | 57.7 | 68 | 76.2 | 83.5 | 86.9 | 85.8 | 80 | 69.4 | 57.9 | 47.2 |
Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.
The graph below shows the average rainfall and number of rainy days per month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
mm | 109 | 107 | 127 | 107 | 129 | 113 | 127 | 103 | 99 | 73 | 105 | 116 |
inches | 4.3 | 4.2 | 5 | 4.2 | 5.1 | 4.4 | 5 | 4.1 | 3.9 | 2.9 | 4.1 | 4.6 |
Rainy days | 11 | 11 | 13 | 11 | 12 | 10 | 11 | 9 | 9 | 8 | 11 | 11 |
Average annual rainfall in Jamestown: 1267.434mm (499 inches)
The bar chart below shows the average daily sunshine hours in Jamestown
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 4.7 | 5.4 | 6.4 | 8 | 8.9 | 9.6 | 9.4 | 9 | 7.9 | 7.2 | 5 | 4.2 |
The graph below shows the daily range of temperatures for each month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Min °C | -5.1 | -3.5 | 1.8 | 6.5 | 11.3 | 15.9 | 18.2 | 17.4 | 13.6 | 6.5 | 2.1 | -2.5 |
Max °C | 6.1 | 8.7 | 14.6 | 20.4 | 24.9 | 29 | 30.8 | 30.2 | 27 | 21.2 | 14.7 | 8.7 |
Min °F | 22.8 | 25.7 | 35.2 | 43.6 | 52.3 | 60.5 | 64.8 | 63.3 | 56.5 | 43.6 | 35.8 | 27.5 |
Max °F | 32.9 | 36.7 | 46.8 | 56.1 | 64.6 | 72.3 | 76.1 | 74.8 | 68.5 | 56.8 | 47.1 | 37.6 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 10.9 | 10.1 | 10.4 | 12.1 | 15.5 | 20.4 | 24.5 | 25.7 | 24 | 19.8 | 15.7 | 12.7 |
°F | 51.5 | 50.1 | 50.7 | 53.8 | 60 | 68.7 | 76.2 | 78.3 | 75.3 | 67.6 | 60.2 | 54.8 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 15 | 15 | 16 | 15 | 13 | 12 | 11 | 10 | 10 | 12 | 14 | 15 |
mph | 9 | 9 | 10 | 9 | 8 | 7 | 7 | 6 | 7 | 7 | 9 | 9 |
A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.
The graph below shows the average relative humidity.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|
71% | 69% | 65% | 63% | 70% | 71% | 73% | 74% | 75% | 71% | 71% | 72% |
Hottest month: | July | 30.5°C 86.9°F |
---|---|---|
Driest month: | October | 73mm 2.9ins |
Sunniest month: | August | 9hrs |
Coldest month: | January | 5.8°C 42.4°F |
Wettest month: | May | 129mm 5.1ins |
Warmest sea: | August | 25.7°C 78.3°F |