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Castlebar Weather and Climate: A Comprehensive Guide

The temperature in Castlebar varies moderately throughout the year. The temperatures shift from pleasant to cold. It also experiences much rainfall throughout the year. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

In Castlebar, seasonal changes bring about a moderate variation in temperatures. Average daytime temperatures reach a pleasant 19°C in July. In February, the coolest month of the year, temperatures drop to a chilly 9°C.

At night, you can expect cooler temperatures, with averages dropping to around 3°C during this month.

Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Castlebar has a relatively rainy climate with high precipitation levels, averaging 1261 mm of rainfall annually. Despite minor fluctuations, Castlebar enjoys fairly consistent precipitation throughout the year. In December, you can expect around 122 mm of precipitation, while in April, Castlebar receives about 90 mm.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Castlebar can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 5.2 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.2 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Claremorris, Ireland (25 KM, 16 Miles).

Daily hours of sunshine

Data from: Claremorris, Ireland (25 KM, 16 Miles).

Forecast for Castlebar

Monday
17 Feb
Rain
Rain
7°C
5.6 mm
Tuesday
18 Feb
Light rain
Light rain
10°C
0.8 mm
Wednesday
19 Feb
Rain
Rain
8°C
16 mm

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Castlebar in Ireland

Other facts from our historical weather data:
  • Which is the warmest month in Castlebar?
    August has an average maximum temperature of 19°C and is the warmest month of the year.
  • Which is the coldest month in Castlebar?
    The coldest month is February with an average maximum temperature of 9°C.
  • Which is the wettest month in Castlebar?
    December tops the wettest month list with 122 mm of rainfall.
  • Which is the driest month in Castlebar?
    April is the driest month with 90 mm of precipitation.
  • Which is the sunniest month in Castlebar?
    May is the sunniest month with an average of 157 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.