Derry Weather in July
July in Derry averages 19°C (66°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 106 mm (4.2 in) on average. An umbrella is a good idea.
Rainfall in Derry in July
Typically around 19 days of rainfall are expected, averaging 106 mm (4.2 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Derry in July
Expect highs of 19°C (66°F) in Derry in July, with nights dropping to around 12°C (54°F). July is typically considered a summer month. The difference between afternoon and evening temperatures is usually noticeable. Nights cool down to 12°C (54°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions. On average, it has the peak temperatures of the year.
Sunshine in Derry in July
The area experiences a moderate amount of sunshine, with approximately 141 hours of sunlight expected. This means a decent mix of sun and overcast.If you favor pleasant temperatures and minimal rainfall, July is one of the best months to visit Derry.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Derry's climate page.
Derry Temperature in July
Min Temperature
12°C (54°F)
Max Temperature
19°C (66°F)
Chance of Rain
62%
Precipitation
106 mm (4.2 in)
Rainy days
19 days
Sunshine
141 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Derry typically stay consistent throughout July, with daily highs averaging around 19°C (66°F). Nights are cool, with lows around 12°C (54°F).
Average temperatures in July
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather for Derry in July
Browse day-by-day weather records for Derry spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Derry historical weather extremes in July
Our historical data for Derry spans 1976 to 2025, revealing these weather extremes.
- The warmest day in July was on July 19, 2006, with a maximum of 28°C (82°F).
- On July 1, 1997, Derry saw its coldest July day with temperatures maxing out at 10°C (50°F).
- Nighttime temperatures dropped to 5°C (41°F) on July 23, 2010, marking the coldest July night on record.
- Peak precipitation in July occurred on July 10, 1987, when 30 mm (1.2 in) of precipitation was measured.
Best Places in Ireland in July
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in July →
perfect weather
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tolerable
unpleasant
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What to Wear in Derry in July
Comfortable temperatures call for an easy wardrobe in July. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Derry in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Derry's climate page.
See the full Derry climate overview or explore weather in Ireland.
