Derry Weather in July
What's the weather like in Derry (N Ireland) in July 2025?
The climate in Derry during July can be summarized as mild and a little damp.
July is in the summer in Derry and is typically the warmest month of the year. Daytime maximum temperatures average around 17°C (63°F), whilst at night 10°C (50°F) is normal.
| Daytime temperature | 17.4°C 63.3°F |
|---|---|
| Nightly temperature | 10°C 50°F |
| Average temperature | 13.7°C 56.7°F |
| Daily sunshine | 4.5 hrs |
| Avg rainfall | 81 mm 3.2 ins |
| Rainy days | 19 days |
| Sea temperature | 14°C 57.1°F |
| Humidity | 87% |
| Windspeed | 19.1kph 12 mph |
On average July is the 3rd 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 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.5 hours of sunshine per day.
July temperatures in Derry
July rainfall
July 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 July 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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