Annual mean 10°C · wettest around February · prevailing wind SW
Warmest
17.5 °C
Coldest
6.3 °C
Wettest
49%
Windiest
7.3 m/s
Prevailing
SW
5.7 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 Castlebar over the whole year is 10°C. July is the hottest month, with highs of about 17°C; March is the coldest, with lows of about 5°C. Castlebar has no sharply defined rainy season: the chance of rain on a given day runs from 25% in April, the driest month, to 43% in February, the wettest. Winds in Castlebar are highest in February, averaging 6.1 m/s (22 km/h), and lightest in July, at 4.2 m/s (15 km/h). The prevailing wind is from the SW. The clearest skies in Castlebar come in May, when the sky is typically 70% covered; July is the cloudiest month, at 82%.
Month by month Castlebar 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
7°C
5°C
1°C
39%
77%
5.3 m/s
0
0
12
February
8°C
5°C
2°C
43%
77%
6.1 m/s
0
0
13
March
9°C
5°C
3°C
39%
76%
5.2 m/s
0
0
23
April
11°C
7°C
6°C
25%
73%
4.7 m/s
4
0
46
May
15°C
9°C
10°C
26%
70%
4.4 m/s
19
0
71
June
16°C
12°C
12°C
29%
77%
4.6 m/s
31
1
74
July
17°C
13°C
14°C
31%
82%
4.2 m/s
42
3
78
August
17°C
13°C
14°C
36%
79%
4.5 m/s
39
1
76
September
15°C
11°C
12°C
34%
74%
4.5 m/s
24
1
71
October
12°C
9°C
8°C
37%
77%
5.1 m/s
3
0
56
November
9°C
7°C
5°C
39%
76%
5.0 m/s
0
0
30
December
7°C
6°C
2°C
43%
79%
5.5 m/s
0
0
15
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 Castlebar weather by season
Year round, Castlebar has days of about 7°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.
Castlebar weather in winterDecember to February
High 7°CLow 5°CRain 42%
Winter in Castlebar has typical daily highs of about 7°C and lows of about 5°C, with a 42% chance of rain on a given day.
Castlebar weather in springMarch to May
High 12°CLow 7°CRain 30%
Spring in Castlebar has typical daily highs of about 12°C and lows of about 7°C, with a 30% chance of rain on a given day.
Castlebar weather in summerJune to August
High 17°CLow 12°CRain 32%
Summer in Castlebar has typical daily highs of about 17°C and lows of about 12°C, with a 32% chance of rain on a given day.
Castlebar weather in autumnSeptember to November
High 12°CLow 9°CRain 37%
Autumn in Castlebar has typical daily highs of about 12°C and lows of about 9°C, with a 37% chance of rain on a given day.
When is the rainy season in Castlebar?
Castlebar has no sharply defined rainy season: the chance of rain on a given day runs from 25% in April, the driest month, to 43% in February, the wettest.
What time of year is Castlebar windiest?
Winds in Castlebar are highest in February, averaging 6.1 m/s (22 km/h), and lightest in July, at 4.2 m/s (15 km/h). The prevailing wind is from the SW.
What is the average temperature in Castlebar year round?
The average temperature in Castlebar over the whole year is 10°C. July is the hottest month, with highs of about 17°C; March is the coldest, with lows of about 5°C.