The climate in New Castle during October can be summarized as mild and a little damp.
October is in the fall / autumn in New Castle and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 19°C (66°F), whilst at night 5°C (41°F) is normal.
| Daytime temperature | 18.8°C 65.8°F | 
|---|---|
| Nightly temperature | 4.8°C 40.6°F | 
| Average temperature | 11.8°C 53.2°F | 
| Daily sunshine | 6.8 hrs | 
| Avg rainfall | 89 mm 3.5 ins | 
| Rainy days | 9 days | 
| Sea temperature | 19.7°C 67.5°F | 
| Humidity | 71% | 
| Windspeed | 11.2kph 7 mph | 
On average October is the 5th wettest month of the year in New Castle with around 89mm 3.5 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.8 hours of sunshine per day.
 
				 
						 
						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 New Castle in October 2025.
Best places to visit in October
| Hottest month: | July | 28.2°C 82.8°F | 
|---|---|---|
| Driest month: | January | 71mm 2.8ins | 
| Sunniest month: | June | 9hrs | 
| Coldest month: | January | 4.4°C 39.9°F | 
| Wettest month: | July | 105mm 4.1ins | 
 
	 
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