Donegal Weather in July
During July, Donegal experiences pleasant daytime temperatures of 19°C (66°F) and cooler nights around 12°C (54°F). As part of the summer season, expect quite a bit of rainfall. Around 119 mm (4.7 in) is typical.
Rainfall in Donegal in July
Typically, you can expect about 20 days of rain this month, with 119 mm (4.7 in) on average. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Donegal in July
Expect highs of 19°C (66°F) in Donegal in July, with nights dropping to around 12°C (54°F). During July, the summer season is in full swing. 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 Donegal in July
You can expect a moderate amount of sunlight, with approximately 141 hours. This means a pleasant mix of sun and overcast.If you're a fan of comfortable temperatures and drier conditions, July is a great time to visit.
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 Donegal's climate page.
Donegal Temperature in July
Min Temperature
12°C (54°F)
Max Temperature
19°C (66°F)
Chance of Rain
66%
Precipitation
119 mm (4.7 in)
Rainy days
20 days
Sunshine
141 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Donegal 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
Historical weather for Donegal in July
Browse day-by-day weather records for Donegal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Donegal historical weather extremes in July
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Donegal.
- On July 13, 1983, temperatures climbed to 30°C (86°F), marking the warmest July day on record.
- On July 1, 1997, Donegal saw its coldest July day with temperatures maxing out at 10°C (50°F).
- Nighttime temperatures dropped to 5°C (41°F) on July 12, 2012, marking the coldest July night on record.
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 →
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What to Wear in Donegal 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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Donegal 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 Donegal's climate page.
See the full Donegal climate overview or explore weather in Ireland.
