When is the best time to go to Donegal
The chart above shows the best time of year to visit Donegal, Ireland. These are based on an analysis of weather averages such as temperature, rainfall and number of hours of sunshine. These ratings are based solely on the climate and do not take into account other factors such as accommodation prices and how busy it is likely to be.
Average temperatures in Donegal
Donegal weather by month
Please note our recommendations for when to visit Donegal are based solely on the weather and do not take into accounts accommodation prices, how busy it will be and what events are on.
January
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 6°C | 164mm | 1.6hrs | 9.4hrs | 10°C |
Cool and wet weather often prevails in Donegal during the month of January
Based on weather alone, this is probably a time of year to avoid going to Donegal for your holidays. The weather is often not a good and not conducive to spending time outdoors.
January is in the winter in Donegal and is typically the coldest month of the year. Daytime maximum temperatures average around a cold 6°C (43°F), whilst at night 1°C (33°F) is normal.
On average January is the driest month of the year in Donegal with around 164mm 6.5 inches of rain making it a wet time to visit. This rainfall is typically spread over 24 days, although this may vary considerably.
On the flip side this corresponds to an average of 1.6 hours of sunshine per day.
February
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 6°C | 114mm | 2.5hrs | 11hrs | 9°C |
February in Donegal is generally damp with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Donegal for your holidays. The weather is often relatively bad and not conducive to spending time outdoors.
February is in the winter in Donegal and is typically the 2nd coldest month of the year. Daytime maximum temperatures average around a cold 7°C (44°F), whilst at night 1°C (33°F) is normal.
On average February is the 2nd driest month of the year in Donegal with around 114mm 4.5 inches of rain making it a damp time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 2.5 hours of sunshine per day.
March
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 8°C | 122mm | 3.4hrs | 13hrs | 9°C |
The weather in March in Donegal is characteristically cool and wet.
Based on weather alone, this is probably a time of year to avoid going to Donegal for your holidays. The weather is often not a good and not conducive to spending time outdoors.
March is in the spring in Donegal and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 9°C (47°F), whilst at night 2°C (35°F) is normal.
On average March is the 3rd driest month of the year in Donegal with around 122mm 4.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.4 hours of sunshine per day.
April
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 10°C | 84mm | 5.1hrs | 15.3hrs | 10°C |
Donegal's weather in April is typically cool and a little damp in nature.
It is perhaps a good month to visit Donegal, with some particularly good weather at this time of year.
April is in the spring in Donegal and is typically the 4th coldest month of the year. Daytime maximum temperatures average around a cool 11°C (52°F), whilst at night 3°C (37°F) is normal.
On average April is the 4th driest month of the year in Donegal with around 84mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 18 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.1 hours of sunshine per day.
May
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 12°C | 92mm | 5.7hrs | 17.5hrs | 11°C |
May is a a little damp month in Donegal and the temperature is generally cool.
It is perhaps a good month to visit Donegal, with some very good weather at this time of year.
May is in the spring in Donegal and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 14°C (57°F), whilst at night 5°C (41°F) is normal.
On average May is the 5th driest month of the year in Donegal with around 92mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.7 hours of sunshine per day.
June
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 14°C | 93mm | 5.5hrs | 9.4hrs | 13°C |
The weather in June in Donegal is characteristically mild and a little damp.
It is perhaps the perfect month to visit Donegal, with some inordinately good weather at this time of year.
June is in the summer in Donegal and is typically the 6th coldest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night 8°C (46°F) is normal.
On average June is the 6th driest month of the year in Donegal with around 93mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.5 hours of sunshine per day.
July
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 16°C | 100mm | 4.4hrs | 11hrs | 14°C |
July in Donegal is generally a little damp with the temperature being mild.
It is perhaps the perfect month to visit Donegal, with some extremely good weather at this time of year.
July is in the summer in Donegal and is typically the 6th warmest month of the year. Daytime maximum temperatures average around 17°C (63°F), whilst at night 10°C (50°F) is normal.
On average July is the 6th wettest month of the year in Donegal with around 100mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 20 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.4 hours of sunshine per day.
August
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 16°C | 116mm | 4.4hrs | 13hrs | 15°C |
The weather in August in Donegal is characteristically mild and damp.
It is perhaps a good month to visit Donegal, with some extremely good weather at this time of year.
August is in the summer in Donegal and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 17°C (63°F), whilst at night 9°C (49°F) is normal.
On average August is the 5th wettest month of the year in Donegal with around 116mm 4.6 inches of rain making it a damp time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.4 hours of sunshine per day.
September
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 14°C | 145mm | 3.7hrs | 15.3hrs | 14°C |
Donegal's weather in September is typically mild and wet in nature.
Based on weather alone, this is probably a time of year to avoid going to Donegal for your holidays. The weather is often not a good and not conducive to spending time outdoors.
September is in the fall / autumn in Donegal and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 15°C (59°F), whilst at night 8°C (46°F) is normal.
On average September is the 4th wettest month of the year in Donegal with around 145mm 5.7 inches of rain making it a wet time to visit. This rainfall is typically spread over 22 days, although this may vary considerably.
On the flip side this corresponds to an average of 3.7 hours of sunshine per day.
Donegal weather in September »
October
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 11°C | 157mm | 2.8hrs | 17.5hrs | 13°C |
October is a wet month in Donegal and the temperature is generally cool.
Based on weather alone, this is probably a time of year to avoid going to Donegal for your holidays. The weather is often not a good and not conducive to spending time outdoors.
October is in the fall / autumn in Donegal and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a cool 12°C (54°F), whilst at night 6°C (43°F) is normal.
On average October is the 3rd wettest month of the year in Donegal with around 157mm 6.2 inches of rain making it a wet time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 2.8 hours of sunshine per day.
November
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 8°C | 160mm | 2hrs | 9.4hrs | 11°C |
November is a wet month in Donegal and the temperature is generally cool.
Based on weather alone, this is probably a time of year to avoid going to Donegal for your holidays. The weather is often not a good and not conducive to spending time outdoors.
November is in the fall / autumn in Donegal and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around a cool 8°C (47°F), whilst at night 2°C (36°F) is normal.
On average November is the 2nd wettest month of the year in Donegal with around 160mm 6.3 inches of rain making it a wet time to visit. This rainfall is typically spread over 23 days, although this may vary considerably.
On the flip side this corresponds to an average of 2 hours of sunshine per day.
December
| Temp | Rain | Sunshine | Day length | Sea temp |
|---|---|---|---|---|
| 6°C | 173mm | 1.3hrs | 11hrs | 11°C |
December in Donegal is generally wet with the temperature being cool.
Based on weather alone, this is probably a time of year to avoid going to Donegal for your holidays. The weather is often not a good and not conducive to spending time outdoors.
December is in the winter in Donegal and is typically the warmest month of the year. Daytime maximum temperatures average around a cold 7°C (45°F), whilst at night 2°C (35°F) is normal.
On average December is the wettest month of the year in Donegal with around 173mm 6.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 24 days, although this may vary considerably.
On the flip side this corresponds to an average of 1.3 hours of sunshine per day.
Other monthly averages
Donegal weather stats
| Hottest month: | July | 17.2°C 63°F |
|---|---|---|
| Driest month: | April | 84mm 3.3ins |
| Sunniest month: | April | 5.1hrs |
| Coldest month: | January | 6.1°C 43°F |
| Wettest month: | December | 173mm 6.8ins |
| Warmest sea: | August | 14.6°C 58.3°F |
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