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 | -9.5 | -5.4 | 1.5 | 11.3 | 19.2 | 24.6 | 28.3 | 27.3 | 20.9 | 13.7 | 2.7 | -6.2 |
°F | 14.9 | 22.3 | 34.7 | 52.3 | 66.5 | 76.3 | 82.9 | 81.1 | 69.6 | 56.6 | 36.9 | 20.8 |
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 | 14 | 10 | 20 | 37 | 57 | 90 | 75 | 53 | 44 | 25 | 14 | 11 |
inches | 0.5 | 0.4 | 0.8 | 1.5 | 2.3 | 3.5 | 2.9 | 2.1 | 1.7 | 1 | 0.5 | 0.4 |
Rainy days | 7 | 7 | 7 | 8 | 10 | 11 | 9 | 9 | 7 | 6 | 6 | 7 |
Average annual rainfall in Jamestown: 396.667mm (156.2 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 | 5.3 | 6 | 7.2 | 8.4 | 9.9 | 10.9 | 12 | 10.8 | 8.3 | 6.6 | 4.5 | 4.3 |
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 | -19.8 | -16.1 | -9 | -0.4 | 5.7 | 11.9 | 14.6 | 13.2 | 7.2 | 1 | -7.4 | -16 |
Max °C | -9.3 | -5.1 | 1.8 | 11.6 | 19.5 | 24.9 | 28.6 | 27.7 | 21.3 | 14 | 3 | -6 |
Min °F | -3.6 | 3 | 15.9 | 31.4 | 42.3 | 53.4 | 58.3 | 55.7 | 44.9 | 33.8 | 18.8 | 3.2 |
Max °F | 5.9 | 12.9 | 25.5 | 42.1 | 54.7 | 65.1 | 70.9 | 68.7 | 57.6 | 45.5 | 28 | 12.2 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 6.4 | 6.2 | 6.6 | 7.4 | 8.6 | 10.6 | 13.2 | 16.1 | 15.1 | 11.8 | 9 | 7.2 |
°F | 43.5 | 43.2 | 43.8 | 45.3 | 47.6 | 51.2 | 55.8 | 61 | 59.1 | 53.3 | 48.1 | 44.9 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 19 | 18 | 20 | 21 | 20 | 18 | 16 | 17 | 18 | 19 | 18 | 18 |
mph | 12 | 11 | 12 | 13 | 13 | 11 | 10 | 10 | 11 | 12 | 11 | 11 |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|
73% | 75% | 74% | 65% | 60% | 66% | 65% | 65% | 67% | 67% | 75% | 76% |
Hottest month: | July | 28.3°C 82.9°F |
---|---|---|
Driest month: | February | 10mm 0.4ins |
Sunniest month: | July | 12hrs |
Coldest month: | January | -9.5°C 14.9°F |
Wettest month: | June | 90mm 3.5ins |
Warmest sea: | August | 16.1°C 61°F |