Annual mean 15°C · wettest around July · prevailing wind SE
Warmest
29.7 °C
Coldest
4.2 °C
Wettest
43%
Windiest
4.7 m/s
Prevailing
SE
3.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Dundalk over the whole year is 15°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 1°C. Dundalk has no sharply defined rainy season: the chance of rain on a given day runs from 31% in June, the driest month, to 40% in July, the wettest. Winds in Dundalk are highest in March, averaging 3.5 m/s (13 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the SE. The clearest skies in Dundalk come in November, when the sky is typically 28% covered; May is the cloudiest month, at 40%.
Month by month Dundalk 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
4°C
1°C
-1°C
33%
39%
3.0 m/s
1
0
12
February
6°C
3°C
2°C
36%
36%
2.9 m/s
3
0
21
March
11°C
5°C
6°C
38%
33%
3.5 m/s
9
0
40
April
16°C
11°C
12°C
34%
35%
3.4 m/s
36
4
66
May
21°C
16°C
19°C
35%
40%
2.8 m/s
64
18
65
June
26°C
21°C
26°C
31%
32%
2.7 m/s
55
52
26
July
29°C
24°C
31°C
40%
29%
2.4 m/s
18
61
4
August
28°C
22°C
29°C
37%
32%
2.3 m/s
35
62
11
September
24°C
19°C
24°C
33%
34%
2.4 m/s
65
43
37
October
19°C
13°C
17°C
38%
33%
2.4 m/s
58
9
73
November
12°C
7°C
8°C
37%
28%
2.7 m/s
17
1
53
December
7°C
3°C
2°C
38%
38%
2.5 m/s
1
0
24
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 Dundalk weather by season
Year round, Dundalk has days of about 4°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from 1°C to 24°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around July and least likely around June. 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.
Dundalk weather in winterDecember to February
High 6°CLow 2°CRain 36%
Winter in Dundalk has typical daily highs of about 6°C and lows of about 2°C, with a 36% chance of rain on a given day.
Dundalk weather in springMarch to May
High 16°CLow 11°CRain 36%
Spring in Dundalk has typical daily highs of about 16°C and lows of about 11°C, with a 36% chance of rain on a given day.
Dundalk weather in summerJune to August
High 28°CLow 22°CRain 36%
Summer in Dundalk has typical daily highs of about 28°C and lows of about 22°C, with a 36% chance of rain on a given day.
Dundalk weather in autumnSeptember to November
High 18°CLow 13°CRain 36%
Autumn in Dundalk has typical daily highs of about 18°C and lows of about 13°C, with a 36% chance of rain on a given day.
When is the rainy season in Dundalk?
Dundalk has no sharply defined rainy season: the chance of rain on a given day runs from 31% in June, the driest month, to 40% in July, the wettest.
What time of year is Dundalk windiest?
Winds in Dundalk are highest in March, averaging 3.5 m/s (13 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the SE.
What is the average temperature in Dundalk year round?
The average temperature in Dundalk over the whole year is 15°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about 1°C.