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Castleblayney Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Castleblayney.
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Climate overview of Castleblayney
Temperatures in Castleblayney, Monaghan County, Ireland, vary greatly throughout the year. July is the hottest month at 20°C (68°F), while January is the coldest at 9°C (48°F).
Castleblayney sees a moderate amount of rain/snowfall, totalling around 979 mm (39 in) per year. It experiences pleasant summers and cold winters, creating some seasonal variation. Sunshine peaks in May, when the city sees around 6.1 hours of sunshine per day.
Castleblayney Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castleblayney - and find the best time to visit.
Monthly Temperature in Castleblayney
The climate in Castleblayney is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a pleasant 20°C (68°F) in July, the warmest time of the year, to a chilly 9°C (48°F) during cooler months like January.
At night, you can expect temperatures ranging from 12°C (54°F) in July to around 3°C (37°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Castleblayney
Generally, Castleblayney receives mid-range precipitation levels, with 979 mm (39 in) annually. Year-round, Castleblayney has a balanced climate with minimal variation in precipitation. The difference between the wettest month, August, with 95 mm (3.7 in), and the driest month, March, with 69 mm (2.7 in), is minimal. For more details, please visit our Castleblayney Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Castleblayney
Seasonal changes in sunshine hours are quite dramatic in Castleblayney. While May receives considerable daily sunshine with up to 6.1 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Belfast, Ireland (67 KM, 42 Miles).
Daily hours of sunshine
Data from: Belfast, Ireland (67 KM, 42 Miles).
Daily percentage of sunshine
Data from: Belfast, Ireland (67 KM, 42 Miles).
Humidity in Castleblayney by Month
The city experiences its highest humidity in September, reaching 91%. In February, the humidity drops to its lowest level at 86%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Belfast, Ireland (67 KM, 42 Miles).
Best Time to Visit Castleblayney
For comfortable weather, consider visiting Castleblayney in July. Conditions are usually least favourable in January, February and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
mixed
Apr
mixed
May
good
Jun
very good
Jul
excellent
Aug
very good
Sep
very good
Oct
good
Nov
mixed
Dec
cold
- Best overall: July
- Warmest weather: June, July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Castleblayney
What is the best time to visit Castleblayney?
July typically offers the most optimal weather in Castleblayney. In contrast, January, February and December tend to have less optimal conditions. Castleblayney has pleasant summers and cold winters.
What temperatures can I expect in Castleblayney?
Daytime highs range from 9°C (48°F) in January to 20°C (68°F) in July. Nighttime lows range from 3°C (37°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Castleblayney get?
Annual rainfall is around 979 mm (39 in). August is the wettest month with 95 mm (3.7 in), while March is the driest with 69 mm (2.7 in).
How sunny is Castleblayney?
Castleblayney receives around 1,297 hours of sunshine per year. May is the sunniest month with 184 hours, while December is the cloudiest with just 39 hours.
Castleblayney 3-Day Forecast
Castleblayney on the map
Castleblayney is highlighted - select any city to see its climate.
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