Castleblayney Weather in October
What's the weather like in Castleblayney (Ulster) in October 2025?
The climate in Castleblayney during October can be summarized as cool and a little damp.
October is in the fall / autumn in Castleblayney and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 13°C (55°F), whilst at night 6°C (43°F) is normal.
| Daytime temperature | 12.9°C 55.2°F |
|---|---|
| Nightly temperature | 6.3°C 43.3°F |
| Average temperature | 9.6°C 49.3°F |
| Daily sunshine | 3 hrs |
| Avg rainfall | 99 mm 3.9 ins |
| Rainy days | 19 days |
| Sea temperature | 13.5°C 56.4°F |
| Humidity | 89% |
| Windspeed | 18.4kph 11 mph |
On average October is the 3rd wettest month of the year in Castleblayney with around 99mm 3.9 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 3 hours of sunshine per day.
October temperatures in Castleblayney
October rainfall
October hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Castleblayney in October 2025.
Other monthly averages
Best places to visit in October
Castleblayney weather stats
| Hottest month: | July | 18.6°C 65.5°F |
|---|---|---|
| Driest month: | July | 65mm 2.6ins |
| Sunniest month: | May | 5.9hrs |
| Coldest month: | January | 6.3°C 43.3°F |
| Wettest month: | January | 101mm 4ins |
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