Annual mean 10°C · wettest around February · prevailing wind SW
Warmest
18.8 °C
Coldest
6.0 °C
Wettest
30%
Windiest
7.2 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 Glencullen over the whole year is 10°C. July is the hottest month, with highs of about 18°C; January is the coldest, with lows of about 5°C. Glencullen has no sharply defined rainy season: the chance of rain on a given day runs from 17% in May, the driest month, to 24% in February, the wettest. Winds in Glencullen are highest in February, averaging 6.1 m/s (22 km/h), and lightest in May, at 4.1 m/s (15 km/h). The prevailing wind is from the SW. The clearest skies in Glencullen come in May, when the sky is typically 67% covered; July is the cloudiest month, at 76%.
Month by month Glencullen 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
21%
73%
5.4 m/s
0
0
12
February
8°C
5°C
2°C
24%
73%
6.1 m/s
0
0
16
March
9°C
5°C
4°C
23%
73%
5.2 m/s
1
0
27
April
11°C
6°C
6°C
19%
70%
4.5 m/s
4
0
45
May
15°C
9°C
11°C
17%
67%
4.1 m/s
20
0
77
June
16°C
12°C
13°C
19%
72%
4.4 m/s
35
1
82
July
18°C
14°C
15°C
20%
76%
4.2 m/s
57
2
82
August
18°C
13°C
15°C
20%
73%
4.5 m/s
53
1
83
September
16°C
12°C
13°C
23%
72%
4.5 m/s
31
1
78
October
13°C
10°C
9°C
24%
73%
4.9 m/s
6
0
64
November
9°C
7°C
5°C
22%
73%
5.0 m/s
0
0
33
December
8°C
6°C
3°C
23%
74%
5.5 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 Glencullen weather by season
Year round, Glencullen has days of about 7°C at their warmest in January, its coolest month, and 18°C in July, its warmest; the coolest hours of the day run from 5°C to 14°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 May. 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.
Glencullen weather in winterDecember to February
High 7°CLow 5°CRain 22%
Winter in Glencullen has typical daily highs of about 7°C and lows of about 5°C, with a 22% chance of rain on a given day.
Glencullen weather in springMarch to May
High 12°CLow 7°CRain 20%
Spring in Glencullen has typical daily highs of about 12°C and lows of about 7°C, with a 20% chance of rain on a given day.
Glencullen weather in summerJune to August
High 17°CLow 13°CRain 20%
Summer in Glencullen has typical daily highs of about 17°C and lows of about 13°C, with a 20% chance of rain on a given day.
Glencullen weather in autumnSeptember to November
High 13°CLow 9°CRain 23%
Autumn in Glencullen has typical daily highs of about 13°C and lows of about 9°C, with a 23% chance of rain on a given day.
When is the rainy season in Glencullen?
Glencullen has no sharply defined rainy season: the chance of rain on a given day runs from 17% in May, the driest month, to 24% in February, the wettest.
What time of year is Glencullen windiest?
Winds in Glencullen are highest in February, averaging 6.1 m/s (22 km/h), and lightest in May, at 4.1 m/s (15 km/h). The prevailing wind is from the SW.
What is the average temperature in Glencullen year round?
The average temperature in Glencullen over the whole year is 10°C. July is the hottest month, with highs of about 18°C; January is the coldest, with lows of about 5°C.