The bar chart below shows the average monthly peak daytime temperatures at Dumbarton
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 5.5 | 5.7 | 7.8 | 10.7 | 14 | 16.7 | 17.9 | 17.6 | 14.9 | 12 | 8 | 6.3 |
°F | 41.9 | 42.2 | 46 | 51.2 | 57.1 | 62.1 | 64.2 | 63.6 | 58.9 | 53.5 | 46.4 | 43.4 |
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 | 169 | 112 | 136 | 79 | 94 | 85 | 94 | 126 | 169 | 175 | 163 | 162 |
inches | 6.7 | 4.4 | 5.4 | 3.1 | 3.7 | 3.4 | 3.7 | 4.9 | 6.7 | 6.9 | 6.4 | 6.4 |
Rainy days | 22 | 17 | 20 | 16 | 17 | 16 | 17 | 18 | 20 | 21 | 20 | 21 |
Average annual rainfall in Dumbarton: 1616.234mm (636.3 inches)
The bar chart below shows the average daily sunshine hours in Dumbarton
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 1.4 | 2.5 | 3.3 | 5.3 | 6.2 | 6.4 | 5.7 | 5.1 | 3.9 | 2.8 | 2 | 1.3 |
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 | 0.8 | 0.6 | 1.9 | 3.4 | 6.1 | 8.9 | 10.6 | 10.5 | 8.7 | 6.5 | 2.9 | 1.6 |
Max °C | 5.6 | 5.8 | 8 | 10.9 | 14.2 | 16.9 | 18.1 | 17.8 | 15.1 | 12.1 | 8.2 | 6.5 |
Min °F | 33.4 | 33.1 | 35.3 | 38 | 42.9 | 48 | 51 | 50.8 | 47.7 | 43.7 | 37.1 | 34.8 |
Max °F | 37.8 | 37.8 | 40.8 | 44.8 | 50.2 | 55.2 | 57.7 | 57.4 | 53.4 | 48.7 | 41.9 | 39.2 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 8.1 | 6.9 | 6.8 | 7.8 | 9.8 | 12 | 13.8 | 14.7 | 14.5 | 13.6 | 11.9 | 9.9 |
°F | 46.5 | 44.4 | 44.2 | 46.1 | 49.6 | 53.6 | 56.9 | 58.4 | 58.1 | 56.4 | 53.4 | 49.8 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 18 | 17 | 19 | 17 | 16 | 16 | 15 | 14 | 16 | 17 | 18 | 18 |
mph | 11 | 11 | 12 | 10 | 10 | 10 | 9 | 9 | 10 | 11 | 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 |
---|---|---|---|---|---|---|---|---|---|---|---|
90% | 87% | 83% | 79% | 77% | 79% | 81% | 83% | 86% | 88% | 89% | 91% |
Hottest month: | July | 17.9°C 64.2°F |
---|---|---|
Driest month: | April | 79mm 3.1ins |
Sunniest month: | May | 6.2hrs |
Coldest month: | January | 5.5°C 41.9°F |
Wettest month: | October | 175mm 6.9ins |
Warmest sea: | August | 14.7°C 58.5°F |