Antrim weather

The Antrim weather guide shows monthly weather averages (including daytime and night-time temperatures, rainfall and hours of sunshine) for holidays in Antrim, Northern Ireland in 2026/2027.

• Antrim weather averages
• Antrim weather by month
• Back to Northern Ireland

Antrim weather averages

Check the Antrim weather averages for each month of the year including maximum daytime and minimum night-time temperatures, monthly rainfall, number of days with rain and average daily hours of sunshine for Antrim, Northern Ireland.

Back to top

Antrim weather by month

Check the weather for Antrim, Northern Ireland for a particular month by selecting from the list below. This gives the best indication of what to expect from the weather months in advance.

• January
• February
• March
• April
• May
• June
• July
• August
• September
• October
• November
• December

Back to top

Antrim weather in January

The average maximum daytime temperature in Antrim in January is a cold 6°C (43°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 1 hours of sunshine a day in Antrim during January.

• 6
  6°C max day temperature
• 1
  1 hour of sunshine per day
• 21
  21 days with some rainfall
• 1
  1°C min night temperature
• 105
  105 mm of monthly rainfall

On average 105 mm (4.1 inches) of rain normally falls in Antrim during January with rain falling on 21 days of the month.

Back to months

Antrim weather in February

The average maximum daytime temperature in Antrim in February is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 1°C (34°F). You can expect on average 2 hours of sunshine a day in Antrim during February.

• 7
  7°C max day temperature
• 2
  2 hours of sunshine per day
• 18
  18 days with some rainfall
• 1
  1°C min night temperature
• 73
  73 mm of monthly rainfall

On average 73 mm (2.9 inches) of rain normally falls in Antrim during February with rain falling on 18 days of the month.

Back to months

Antrim weather in March

The average maximum daytime temperature in Antrim in March is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 3 hours of sunshine a day in Antrim during March.

• 9
  9°C max day temperature
• 3
  3 hours of sunshine per day
• 20
  20 days with some rainfall
• 2
  2°C min night temperature
• 81
  81 mm of monthly rainfall

On average 81 mm (3.2 inches) of rain normally falls in Antrim during March with rain falling on 20 days of the month.

Back to months

Antrim weather in April

The average maximum daytime temperature in Antrim in April is a cool 11°C (52°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 5 hours of sunshine a day in Antrim during April.

• 11
  11°C max day temperature
• 5
  5 hours of sunshine per day
• 16
  16 days with some rainfall
• 3
  3°C min night temperature
• 66
  66 mm of monthly rainfall

On average 66 mm (2.6 inches) of rain normally falls in Antrim during April with rain falling on 16 days of the month.

Back to months

Antrim weather in May

The average maximum daytime temperature in Antrim in May is a comfortable 14°C (57°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 6 hours of sunshine a day in Antrim during May.

• 14
  14°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 6
  6°C min night temperature
• 62
  62 mm of monthly rainfall

On average 62 mm (2.4 inches) of rain normally falls in Antrim during May with rain falling on 16 days of the month.

Back to months

Antrim weather in June

The average maximum daytime temperature in Antrim in June is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 6 hours of sunshine a day in Antrim during June.

• 16
  16°C max day temperature
• 6
  6 hours of sunshine per day
• 16
  16 days with some rainfall
• 8
  8°C min night temperature
• 67
  67 mm of monthly rainfall

On average 67 mm (2.6 inches) of rain normally falls in Antrim during June with rain falling on 16 days of the month.

Back to months

Antrim weather in July

The average maximum daytime temperature in Antrim in July is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 11°C (52°F). You can expect on average 5 hours of sunshine a day in Antrim during July.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 18
  18 days with some rainfall
• 11
  11°C min night temperature
• 69
  69 mm of monthly rainfall

On average 69 mm (2.7 inches) of rain normally falls in Antrim during July with rain falling on 18 days of the month.

Back to months

Antrim weather in August

The average maximum daytime temperature in Antrim in August is a comfortable 18°C (64°F), while the average minimum night-time temperature is a cool 10°C (50°F). You can expect on average 5 hours of sunshine a day in Antrim during August.

• 18
  18°C max day temperature
• 5
  5 hours of sunshine per day
• 19
  19 days with some rainfall
• 10
  10°C min night temperature
• 88
  88 mm of monthly rainfall

On average 88 mm (3.5 inches) of rain normally falls in Antrim during August with rain falling on 19 days of the month.

Back to months

Antrim weather in September

The average maximum daytime temperature in Antrim in September is a comfortable 16°C (61°F), while the average minimum night-time temperature is a cool 8°C (46°F). You can expect on average 4 hours of sunshine a day in Antrim during September.

• 16
  16°C max day temperature
• 4
  4 hours of sunshine per day
• 19
  19 days with some rainfall
• 8
  8°C min night temperature
• 90
  90 mm of monthly rainfall

On average 90 mm (3.5 inches) of rain normally falls in Antrim during September with rain falling on 19 days of the month.

Back to months

Antrim weather in October

The average maximum daytime temperature in Antrim in October is a cool 12°C (54°F), while the average minimum night-time temperature is a cold 6°C (43°F). You can expect on average 3 hours of sunshine a day in Antrim during October.

• 12
  12°C max day temperature
• 3
  3 hours of sunshine per day
• 20
  20 days with some rainfall
• 6
  6°C min night temperature
• 104
  104 mm of monthly rainfall

On average 104 mm (4.1 inches) of rain normally falls in Antrim during October with rain falling on 20 days of the month.

Back to months

Antrim weather in November

The average maximum daytime temperature in Antrim in November is a cool 9°C (48°F), while the average minimum night-time temperature is a cold 3°C (37°F). You can expect on average 2 hours of sunshine a day in Antrim during November.

• 9
  9°C max day temperature
• 2
  2 hours of sunshine per day
• 20
  20 days with some rainfall
• 3
  3°C min night temperature
• 95
  95 mm of monthly rainfall

On average 95 mm (3.7 inches) of rain normally falls in Antrim during November with rain falling on 20 days of the month.

Back to months

Antrim weather in December

The average maximum daytime temperature in Antrim in December is a cold 7°C (45°F), while the average minimum night-time temperature is a cold 2°C (36°F). You can expect on average 1 hours of sunshine a day in Antrim during December.

• 7
  7°C max day temperature
• 1
  1 hour of sunshine per day
• 21
  21 days with some rainfall
• 2
  2°C min night temperature
• 101
  101 mm of monthly rainfall

On average 101 mm (4 inches) of rain normally falls in Antrim during December with rain falling on 21 days of the month.

Back to months