This information may change. Always check the official source.Last verified: August 2026 by Ondřej Kadlec
Best time to visit Ireland
In Dublin: July to August — the months averaging 18–27 °C by day. No other month of the twelve falls inside that band in Dublin.
Ireland is not one climate. Each reference city below is answered on its own numbers.
Dublin
Jan8°January: 8 °C by day, 4 °C at night, 69 mm of rain
Feb9°February: 9 °C by day, 4 °C at night, 59 mm of rain
Mar10°March: 10 °C by day, 4 °C at night, 63 mm of rain
Apr12°April: 12 °C by day, 6 °C at night, 63 mm of rain
May15°May: 15 °C by day, 8 °C at night, 68 mm of rain
Jun17°June: 17 °C by day, 11 °C at night, 74 mm of rain
Jul19°July: 19 °C by day, 13 °C at night, 77 mm of rain, recommended
Aug19°August: 19 °C by day, 13 °C at night, 81 mm of rain, recommended
Sep17°September: 17 °C by day, 11 °C at night, 71 mm of rain
Oct14°October: 14 °C by day, 9 °C at night, 88 mm of rain
Nov10°November: 10 °C by day, 6 °C at night, 87 mm of rain
Dec8°December: 8 °C by day, 4 °C at night, 77 mm of rain
Warmest
July, 19 °C
Coolest
January, 8 °C
Driest
February, 59 mm
Wettest
October, 88 mm
Galway
July to August — 18–27 °C by day. No other month of the twelve falls inside that band in Galway.
Jan8°January: 8 °C by day, 4 °C at night, 103 mm of rain
Feb9°February: 9 °C by day, 4 °C at night, 93 mm of rain
Mar10°March: 10 °C by day, 4 °C at night, 84 mm of rain
Apr12°April: 12 °C by day, 6 °C at night, 72 mm of rain
May15°May: 15 °C by day, 8 °C at night, 84 mm of rain
Jun17°June: 17 °C by day, 11 °C at night, 82 mm of rain
Jul18°July: 18 °C by day, 12 °C at night, 95 mm of rain, recommended
Aug18°August: 18 °C by day, 12 °C at night, 103 mm of rain, recommended
Sep17°September: 17 °C by day, 11 °C at night, 83 mm of rain
Oct14°October: 14 °C by day, 9 °C at night, 116 mm of rain
Nov10°November: 10 °C by day, 6 °C at night, 109 mm of rain
Dec8°December: 8 °C by day, 4 °C at night, 113 mm of rain
Warmest
July, 18 °C
Coolest
January, 8 °C
Driest
April, 72 mm
Wettest
October, 116 mm
Cork
July to August — 18–27 °C by day. No other month of the twelve falls inside that band in Cork.
Jan9°January: 9 °C by day, 4 °C at night, 84 mm of rain
Feb9°February: 9 °C by day, 4 °C at night, 74 mm of rain
Mar10°March: 10 °C by day, 5 °C at night, 74 mm of rain
Apr12°April: 12 °C by day, 6 °C at night, 71 mm of rain
May15°May: 15 °C by day, 9 °C at night, 75 mm of rain
Jun17°June: 17 °C by day, 11 °C at night, 70 mm of rain
Jul19°July: 19 °C by day, 13 °C at night, 74 mm of rain, recommended
Aug19°August: 19 °C by day, 13 °C at night, 77 mm of rain, recommended
Sep17°September: 17 °C by day, 11 °C at night, 72 mm of rain
Oct14°October: 14 °C by day, 9 °C at night, 109 mm of rain
Nov11°November: 11 °C by day, 6 °C at night, 89 mm of rain
Dec9°December: 9 °C by day, 5 °C at night, 94 mm of rain
Warmest
July, 19 °C
Coolest
January, 9 °C
Driest
June, 70 mm
Wettest
October, 109 mm
How this is worked out: a month qualifies when its mean daytime high falls between 18 °C and 27 °C. Where more than five qualify, the answer is the driest run of consecutive qualifying months; where none do, it is the driest three months in a row if the year is hot throughout, or the warmest three if it never gets there. The figures are the thirty-year monthly averages charted below, and they are averages, not a forecast — any single year can miss them by a wide margin.
Dublin
Long-term averages for Dublin: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Dublin
Month
Day (°C)
Night (°C)
Rain (mm)
January
8
4
69
February
9
4
59
March
10
4
63
April
12
6
63
May
15
8
68
June
17
11
74
July
19
13
77
August
19
13
81
September
17
11
71
October
14
9
88
November
10
6
87
December
8
4
77
Galway
Long-term averages for Galway: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Galway
Month
Day (°C)
Night (°C)
Rain (mm)
January
8
4
103
February
9
4
93
March
10
4
84
April
12
6
72
May
15
8
84
June
17
11
82
July
18
12
95
August
18
12
103
September
17
11
83
October
14
9
116
November
10
6
109
December
8
4
113
Cork
Long-term averages for Cork: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
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