Antrim Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Antrim.
Climate overview of Antrim
Antrim, Antrim County, United Kingdom, 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).
Antrim sees a moderate amount of rainfall, totalling around 980 mm (39 in) per year. It experiences pleasant summers and cold winters, creating some seasonal variation. The sunniest month is May, with 6.1 hours of sunshine per day on average.
Antrim Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Antrim - and find the best time to visit.
Monthly Temperature in Antrim
The weather in Antrim changes moderately throughout the year, offering enough variation to appreciate each season. Average maximum daytime temperatures range from a pleasant 19°C (66°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 Antrim
Generally, Antrim has a moderate amount of precipitation, averaging 980 mm (39 in) of rainfall annually. Year-round, Antrim has a balanced climate with minimal variation in precipitation. The difference between the wettest month, August, with 92 mm (3.6 in), and the driest month, March, with 69 mm (2.7 in), is minimal. For more details, please visit our Antrim 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 Antrim
Seasonal changes in sunshine hours are quite dramatic in Antrim. 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
Daily hours of sunshine
Daily percentage of sunshine
Water Temperature in Antrim
The mean water temperature over the year ranges from 7°C (45°F) in February to 13°C (55°F) in August.
Water temperature over the year
Humidity in Antrim 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
Wind Speed in Antrim
The mean wind speed varies between 4 m/s (8 knots) and 5 m/s (10 knots) throughout the year. It is lowest in April, May, June, July, August and September and highest during January, February, March, October, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Antrim
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, 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 Antrim
What is the best time to visit Antrim?
June, July and August typically offer the most optimal weather in Antrim. In contrast, January, February and December tend to have less optimal conditions. Antrim has pleasant summers and cold winters.
What temperatures can I expect in Antrim?
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 Antrim get?
Annual rainfall is around 980 mm (39 in). August is the wettest month with 92 mm (3.6 in), while March is the driest with 69 mm (2.7 in).
How sunny is Antrim?
Antrim 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.
Antrim 3-Day Forecast
Antrim 3-Day Forecast
Antrim on the map
Antrim is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
London
23°C (73°F) Bath22°C (72°F) York22°C (72°F) Manchester
21°C (70°F) Edinburgh
19°C (66°F) Glasgow19°C (66°F) Torquay20°C (68°F) Blackpool19°C (66°F) 
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