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Weather & Climate
Castlebar, Connacht, Ireland
Overview
Climate data and monthly weather averages for Castlebar.
Key Metrics
Annual Avg
9.6°C
Summer Avg
14°C
Winter Avg
5.7°C
Record High
26.9°C
Record Low
-5.3°C
Annual Precipitation
1312.7 mm
Avg Humidity
88%
Summer Humidity
86%
Winter Humidity
91%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 13° | 5.6° | -4.2° | 128.7 | 91% | 21 | 83.8 |
| Feb | 13.3° | 5.4° | -2.8° | 99.4 | 90% | 38 | 70.4 |
| Mar | 16.9° | 6.2° | -2.8° | 93.6 | 88% | 78 | 87.3 |
| Apr | 19.4° | 8.2° | -1.6° | 75.6 | 86% | 119 | 72.4 |
| May | 22.9° | 10.7° | 1.6° | 91.8 | 84% | 150 | 70.7 |
| Jun | 26.9° | 13.1° | 5.1° | 96.9 | 84% | 149 | 61.6 |
| Jul | 26° | 14.4° | 7.1° | 111.6 | 86% | 137 | 56.7 |
| Aug | 25.9° | 14.4° | 7° | 118.4 | 87% | 116 | 57.7 |
| Sep | 21.7° | 13° | 3.9° | 102.9 | 87% | 85 | 72.5 |
| Oct | 18.9° | 10.4° | 1.6° | 121.5 | 89% | 53 | 66.4 |
| Nov | 15.4° | 7.8° | -2.1° | 136.2 | 91% | 25 | 73.6 |
| Dec | 13.2° | 6.1° | -5.3° | 136.1 | 92% | 16 | 75 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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