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Antrim Weather and Climate: A Comprehensive Guide

The temperature in Antrim varies moderately throughout the year. The temperatures shift from pleasant to cold. It receives mid-range precipitation levels. Now, let’s break down all the climate details for a clearer picture.

Average maximum day and minimum night temperature

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 in July, the warmest time of the year, to a chilly 9°C during cooler months like January.

At night, temperatures typically drop to an average of around 3°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Generally, Antrim has a moderate amount of precipitation, averaging 980 mm 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, and the driest month, March, with 69 mm, is minimal.

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

Sunshine over the year

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

Data from: Belfast, Ireland (6 KM, 4 Miles).

Daily hours of sunshine

Data from: Belfast, Ireland (6 KM, 4 Miles).

Average water temperature

The mean water temperature over the year ranges from 7°C in February to 13°C in August.

Water temperature over the year

Data from: Belfast, Ireland (6 KM, 4 Miles).

Forecast for Antrim

Wed   Jan 15
12°C | 5°C
S 5 m/s
clear and no rain

clear and no rain

Thu   Jan 16
9°C | 4°C
S 6 m/s
broken clouds and no rain

broken clouds and no rain

Fri   Jan 17
11°C | 6°C
S 6 m/s
broken clouds and no rain

broken clouds and no rain

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Antrim in the United Kingdom

Other facts from our historical weather data:
  • Which is the warmest month in Antrim?
    July has an average maximum temperature of 19°C and is the warmest month of the year.
  • Which is the coldest month in Antrim?
    The coldest month is January with an average maximum temperature of 9°C.
  • Which is the wettest month in Antrim?
    August tops the wettest month list with 92 mm of rainfall.
  • Which is the driest month in Antrim?
    March is the driest month with 69 mm of precipitation.
  • Which is the sunniest month in Antrim?
    May is the sunniest month with an average of 184 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.