Castlebar Weather in July
Thinking of visiting Castlebar in July? Expect pleasant temperatures reaching 19°C (66°F) during the day, dropping to 12°C (54°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Castlebar in July
On average, there are about 17 days with rain during this month, averaging 105 mm (4.1 in). 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 Castlebar in July
July in Castlebar sees highs of 19°C (66°F) and lows of 12°C (54°F) overnight. Summer occurs in July. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, it sees the highest temps of the year.
Sunshine in Castlebar in July
You can expect a moderate amount of sunlight, with approximately 118 hours. This means a pleasant mix of sun and overcast.For Castlebar itself, June generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 Castlebar's climate page.
Castlebar Temperature in July
Min Temperature
12°C (54°F)
Max Temperature
19°C (66°F)
Chance of Rain
57%
Precipitation
105 mm (4.1 in)
Rainy days
17 days
Humidity
80% *
Sunshine
118 hours *
Percentage Sunshine
25% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Castlebar 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 Castlebar in July
Browse day-by-day weather records for Castlebar spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Castlebar historical weather extremes in July
According to our 49 years of weather records for Castlebar, the following extremes were recorded between 1976 and 2025.
- Castlebar recorded its highest July temperature of 29°C (84°F) on July 12, 2025.
- The coldest July day was on July 2, 1997, with a maximum of 10°C (50°F).
- The lowest overnight temperature recorded in July was 5°C (41°F) (July 3, 1990).
- The wettest day in July Castlebar was on July 11, 2010 with 41 mm (1.6 in) of precipitation.
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
pleasant
tolerable
unpleasant
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What to Wear in Castlebar in July
Pleasant temperatures in July mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Castlebar 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 Castlebar's climate page.
Temperature Rainfall Sunshine Humidity
See the full Castlebar climate overview or explore weather in Ireland.
