Birr Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Birr.
Climate overview of Birr
Birr, Offaly, Ireland, has a moderate seasonal temperature range, with July reaching 20°C (68°F) and January cooling to 9°C (48°F).
Birr sees a moderate amount of rainfall, totalling around 994 mm (39 in) per year. It experiences pleasant summers and cold winters, creating some seasonal variation. May is the sunniest month, averaging 6.1 hours of sunshine per day.
Birr Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Birr - and find the best time to visit.
Monthly Temperature in Birr
In Birr, seasonal changes bring about a moderate variation in temperatures. 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 Birr
Generally, Birr experiences moderate precipitation patterns, averaging 994 mm (39 in) yearly. Year-round, Birr has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 92 mm (3.6 in), and the driest month, March, with 72 mm (2.8 in), is minimal. For more details, please visit our Birr 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 Birr
Seasonal changes in sunshine hours are quite dramatic in Birr. 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 1.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Birr by Month
The relative humidity is high throughout the year in Birr.
The city experiences its highest humidity in December, reaching 83%. In April, the humidity drops to its lowest level at 64%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Birr
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: July and August
- Warmest weather: June, July and August
- Most sunshine: May
- Seasonal pattern: Pleasant summers and cold winters
Frequently asked questions about the climate in Birr
What is the best time to visit Birr?
July and August typically offer the most optimal weather in Birr. In contrast, January, February and December tend to have less optimal conditions. Birr has pleasant summers and cold winters.
What temperatures can I expect in Birr?
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).
How much rain does Birr get?
Annual rainfall is around 994 mm (39 in). December is the wettest month with 92 mm (3.6 in), while March is the driest with 72 mm (2.8 in).
How sunny is Birr?
Birr receives around 1,302 hours of sunshine per year. May is the sunniest month with 182 hours, while December is the cloudiest with just 45 hours.
Birr 3-Day Forecast
Birr on the map
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