Annual mean 10°C · wettest around February · prevailing wind SW
Warmest
17.8 °C
Coldest
5.7 °C
Wettest
34%
Windiest
5.8 m/s
Prevailing
SW
4.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Antrim over the whole year is 10°C. July is the hottest month, with highs of about 17°C; January is the coldest, with lows of about 5°C. Antrim has no sharply defined rainy season: the chance of rain on a given day runs from 18% in April, the driest month, to 29% in February, the wettest. Winds in Antrim are highest in February, averaging 5.0 m/s (18 km/h), and lightest in July, at 3.5 m/s (13 km/h). The prevailing wind is from the SW. The clearest skies in Antrim come in April, when the sky is typically 57% covered; December is the cloudiest month, at 70%.
Month by month Antrim climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
6°C
5°C
2°C
24%
68%
4.3 m/s
0
0
14
February
7°C
5°C
2°C
29%
66%
5.0 m/s
0
0
17
March
9°C
5°C
3°C
24%
66%
4.4 m/s
0
0
25
April
11°C
6°C
6°C
18%
57%
4.4 m/s
3
0
42
May
14°C
9°C
10°C
19%
57%
3.9 m/s
16
0
72
June
16°C
12°C
13°C
22%
64%
4.0 m/s
35
1
80
July
17°C
13°C
15°C
22%
68%
3.5 m/s
51
2
82
August
17°C
13°C
15°C
23%
65%
3.5 m/s
52
1
83
September
15°C
12°C
13°C
24%
62%
3.7 m/s
32
1
78
October
12°C
9°C
9°C
26%
64%
4.2 m/s
8
0
64
November
9°C
7°C
5°C
25%
66%
4.0 m/s
1
0
36
December
7°C
6°C
3°C
27%
70%
4.4 m/s
0
0
19
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Antrim weather by season
Year round, Antrim has days of about 6°C at their warmest in January, its coolest month, and 17°C in July, its warmest; the coolest hours of the day run from 5°C to 13°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around February and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Antrim weather in winterDecember to February
High 7°CLow 5°CRain 27%
Winter in Antrim has typical daily highs of about 7°C and lows of about 5°C, with a 27% chance of rain on a given day.
Antrim weather in springMarch to May
High 11°CLow 7°CRain 21%
Spring in Antrim has typical daily highs of about 11°C and lows of about 7°C, with a 21% chance of rain on a given day.
Antrim weather in summerJune to August
High 17°CLow 13°CRain 22%
Summer in Antrim has typical daily highs of about 17°C and lows of about 13°C, with a 22% chance of rain on a given day.
Antrim weather in autumnSeptember to November
High 12°CLow 9°CRain 25%
Autumn in Antrim has typical daily highs of about 12°C and lows of about 9°C, with a 25% chance of rain on a given day.
When is the rainy season in Antrim?
Antrim has no sharply defined rainy season: the chance of rain on a given day runs from 18% in April, the driest month, to 29% in February, the wettest.
What time of year is Antrim windiest?
Winds in Antrim are highest in February, averaging 5.0 m/s (18 km/h), and lightest in July, at 3.5 m/s (13 km/h). The prevailing wind is from the SW.
What is the average temperature in Antrim year round?
The average temperature in Antrim over the whole year is 10°C. July is the hottest month, with highs of about 17°C; January is the coldest, with lows of about 5°C.