The bar chart below shows the average monthly peak daytime temperatures at Letterkenny
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 6.4 | 6.5 | 8.3 | 10.6 | 13.2 | 15.8 | 16.8 | 16.9 | 14.9 | 12.3 | 8.5 | 7.1 |
°F | 43.5 | 43.7 | 46.9 | 51.1 | 55.8 | 60.4 | 62.3 | 62.4 | 58.9 | 54.2 | 47.3 | 44.8 |
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 | 137 | 96 | 98 | 74 | 82 | 78 | 87 | 98 | 120 | 132 | 137 | 141 |
inches | 5.4 | 3.8 | 3.9 | 2.9 | 3.2 | 3.1 | 3.4 | 3.9 | 4.7 | 5.2 | 5.4 | 5.5 |
Rainy days | 24 | 18 | 22 | 18 | 19 | 18 | 19 | 20 | 22 | 23 | 23 | 24 |
Average annual rainfall in Letterkenny: 1326.067mm (522.1 inches)
The bar chart below shows the average daily sunshine hours in Letterkenny
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Hrs sunshine | 1.6 | 2.5 | 3.4 | 5.3 | 6 | 5.8 | 4.6 | 4.6 | 3.8 | 2.8 | 2 | 1.2 |
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 | 1.1 | 1 | 2 | 3.2 | 5.4 | 8.3 | 10 | 9.8 | 8.3 | 6.6 | 3 | 2.2 |
Max °C | 6.5 | 6.7 | 8.5 | 10.8 | 13.4 | 16 | 17 | 17.1 | 15.1 | 12.5 | 8.7 | 7.3 |
Min °F | 34 | 33.7 | 35.5 | 37.8 | 41.7 | 46.9 | 50 | 49.6 | 46.9 | 43.8 | 37.3 | 35.9 |
Max °F | 38.8 | 38.8 | 41.4 | 44.6 | 48.9 | 53.8 | 56.3 | 56.1 | 53.1 | 49.1 | 42.4 | 40.5 |
The graph below shows the average sea temperature.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
°C | 9.4 | 8.7 | 8.6 | 9.1 | 10.5 | 12.4 | 14 | 14.6 | 14.1 | 12.9 | 11.6 | 10.4 |
°F | 48.9 | 47.6 | 47.4 | 48.4 | 50.9 | 54.3 | 57.1 | 58.3 | 57.4 | 55.3 | 52.9 | 50.7 |
The graph below shows the average wind speed.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
km/h | 27 | 26 | 26 | 22 | 21 | 19 | 19 | 19 | 22 | 24 | 25 | 27 |
mph | 17 | 16 | 16 | 14 | 13 | 12 | 12 | 12 | 14 | 15 | 16 | 17 |
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 |
---|---|---|---|---|---|---|---|---|---|---|---|
91% | 88% | 86% | 85% | 84% | 84% | 87% | 89% | 90% | 91% | 92% | 93% |
Hottest month: | July | 16.8°C 62.2°F |
---|---|---|
Driest month: | April | 74mm 2.9ins |
Sunniest month: | April | 5.3hrs |
Coldest month: | January | 6.4°C 43.5°F |
Wettest month: | December | 141mm 5.6ins |
Warmest sea: | August | 14.6°C 58.3°F |