What’s the climate like in Donegal?
The current climate of Donegal features average monthly temperatures ranging from highs of 18°C during the day to lows of 9°C. The average yearly temperature is around 14°C. At night, temperatures in the colder months average around 4°C and in the warmer months around 12°C.
The highest temperature recorded in Donegal in recent years was 28°C in June 2023. The lowest daytime temperature recorded was -1°C in February 2018.
On average, Donegal gets 1111 mm of precipitation each year. Of this, about 6,4 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Best time to visit Donegal?
The best time to visit Donegal for pleasant to warm weather is May through September. There might be some rain during this period, but the temperatures are just right for exploring Donegal.
Climate Table of Donegal
The climate table of Donegal shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 9 | 9 | 10 | 13 | 15 | 17 | 18 | 18 | 17 | 14 | 11 | 9 |
| Temp. min (°C) | 4 | 4 | 4 | 5 | 8 | 11 | 13 | 12 | 11 | 9 | 6 | 5 |
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| Precipitation (mm) | 114 | 118 | 88 | 46 | 67 | 73 | 96 | 101 | 73 | 103 | 106 | 126 |
| Snow (cm) | 2,7 | 2,8 | 0,6 | 0,1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,2 |
| UV Index | 1 | 2 | 3 | 5 | 6 | 6 | 5 | 5 | 4 | 2 | 1 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 14°C
- Highest temperature: 18°C in July and August
- Lowest temperature: 9°C in January, February and December
- Precipitation*: 1111 mm per year, averaging 93 mm per month
- Snowfall: 6,4 cm per year
- Driest months: 46 mm in April, 67 mm in May and 73 mm in June
- Wettest months: 126 mm in December, 118 mm in February and 114 mm in January
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Donegal
This graph shows the average maximum temperatures per month in Donegal, Ireland. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Donegal
This graph shows how much precipitation Donegal, Ireland, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Donegal
This graph shows how much snow Donegal, Ireland, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Donegal
This graph shows the average UV index per month in Donegal, Ireland. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Donegal
This graph shows the average yearly temperature in Donegal, Ireland. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Donegal
This chart shows the total yearly precipitation in Donegal, Ireland, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Donegal
This chart shows the total yearly snowfall in Donegal, Ireland, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Donegal
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Average Weather in Donegal by Month
Click on a month below to see detailed weather info for Donegal. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
