Castlebar Weather in June
Castlebar in June sees moderate temperatures, with highs around 18°C (64°F) and overnight lows of 10°C (50°F). Rainfall is fairly high at around 96 mm (3.8 in) on average, so pack waterproofs just in case.
Rainfall in Castlebar in June
Historically, the month has about 17 days of rain, averaging 96 mm (3.8 in) in total. A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.
Temperature in Castlebar in June
Expect highs of 18°C (64°F) in Castlebar in June, with nights dropping to around 10°C (50°F). During June, you'll experience the summer season. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights fall to 10°C (50°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Castlebar in June
The area experiences a moderate amount of sunshine, with approximately 139 hours of sunlight expected. This means a decent mix of sun and overcast.So this is a great month to visit if you prefer dry days with pleasant temperatures.
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 June
Min Temperature
10°C (50°F)
Max Temperature
18°C (64°F)
Chance of Rain
57%
Precipitation
96 mm (3.8 in)
Rainy days
17 days
Humidity
76% *
Sunshine
139 hours *
Percentage Sunshine
32% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Castlebar typically stay consistent throughout June, with daily highs averaging around 18°C (64°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 11°C (52°F).
Average temperatures in June
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 June
Historical weather for Castlebar in June
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 June
The extremes listed below come from historical weather data collected in Castlebar from 1976 through 2026.
- The hottest June day on record in Castlebar reached 30°C (86°F) (June 25, 2026).
- On June 1, 2015, Castlebar saw its coldest June day with temperatures maxing out at 10°C (50°F).
- Nighttime temperatures dropped to 2°C (36°F) on June 4, 1991, marking the coldest June night on record.
- Peak precipitation in June occurred on June 8, 2012, when 38 mm (1.5 in) of precipitation was measured.
Best Places in Ireland in June
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in June →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Castlebar in June
Pleasant temperatures in June 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 June
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.
