Derry Weather in May
What's the weather like in Derry (N Ireland) in May 2025?
The climate in Derry during May can be summarized as cool and a little damp.
May is in the spring in Derry and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a cool 14°C (57°F), whilst at night 5°C (42°F) is normal.
| Daytime temperature | 13.7°C 56.6°F |
|---|---|
| Nightly temperature | 5.4°C 41.6°F |
| Average temperature | 9.5°C 49.1°F |
| Daily sunshine | 6 hrs |
| Avg rainfall | 81 mm 3.2 ins |
| Rainy days | 18 days |
| Sea temperature | 10.5°C 50.9°F |
| Humidity | 83% |
| Windspeed | 20.5kph 13 mph |
On average May is the 4th driest month of the year in Derry with around 81mm 3.2 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 6 hours of sunshine per day.
May temperatures in Derry
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Derry in May 2025.
Other monthly averages
Derry weather stats
| Hottest month: | July | 17.2°C 63°F |
|---|---|---|
| Driest month: | April | 73mm 2.9ins |
| Sunniest month: | April | 5.3hrs |
| Coldest month: | January | 6.2°C 43.2°F |
| Wettest month: | January | 130mm 5.1ins |
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