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Castlerea Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Castlerea.
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Climate overview of Castlerea
Castlerea, Roscommon County, Ireland, experiences moderate temperature changes through the seasons. July is the warmest month with daytime highs of 19°C (66°F), while January is the coolest at 9°C (48°F).
The city receives considerable rain/snowfall, with around 1163 mm (46 in) annually. December is the wettest month. It has pleasant summers and cold winters. The most sunshine falls in May, with an average of 5.2 hours of daily sunshine.
Castlerea Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Castlerea - and find the best time to visit.
Monthly Temperature in Castlerea
In Castlerea, seasonal changes bring about a moderate variation in temperatures. Typically, average maximum daytime temperatures range from a pleasant 19°C (66°F) in July to a chilly 9°C (48°F) in the coolest month, January.
Nights vary from 12°C (54°F) in July to around 3°C (37°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Castlerea
Castlerea has a relatively rain/snowy climate with high precipitation levels, averaging 1163 mm (46 in) of rain/snowfall annually. Precipitation levels in Castlerea remain relatively steady throughout the year. December has the most rain, with 107 mm (4.2 in) over 22 days. In the driest month March, this drops slightly to 86 mm (3.4 in), making the city's climate fairly predictable. For more details, please visit our Castlerea 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 Castlerea
For those who appreciate different seasons, Castlerea serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 5.2 hours of sunshine daily, and embrace the darker days in December, offering only 1.2 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Claremorris, Ireland (33 KM, 20 Miles).
Daily hours of sunshine
Data from: Claremorris, Ireland (33 KM, 20 Miles).
Daily percentage of sunshine
Data from: Claremorris, Ireland (33 KM, 20 Miles).
Humidity in Castlerea by Month
The city experiences its highest humidity in January, reaching 90%. In May, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Claremorris, Ireland (33 KM, 20 Miles).
Best Time to Visit Castlerea
For comfortable weather, consider visiting Castlerea in June, July and September. Conditions are usually least favourable in January, February, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
wet
Feb
cold
Mar
mixed
Apr
mixed
May
good
Jun
very good
Jul
very good
Aug
good
Sep
very good
Oct
mixed
Nov
wet
Dec
wet
- Best overall: June, July and September
- Warmest weather: June, July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Castlerea
What is the best time to visit Castlerea?
June, July and September typically offer the most optimal weather in Castlerea. In contrast, January, February, November and December tend to have less optimal conditions. Castlerea has pleasant summers and cold winters.
What temperatures can I expect in Castlerea?
Daytime highs range from 9°C (48°F) in January to 19°C (66°F) in July. Nighttime lows range from 3°C (37°F) to 12°C (54°F).
How much rain does Castlerea get?
Annual rainfall is around 1163 mm (46 in). December is the wettest month with 107 mm (4.2 in), while March is the driest with 86 mm (3.4 in).
How sunny is Castlerea?
Castlerea receives around 1,114 hours of sunshine per year. May is the sunniest month with 157 hours, while December is the cloudiest with just 35 hours.
Castlerea 3-Day Forecast
Castlerea on the map
Castlerea is highlighted - select any city to see its climate.
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