Measurements:
°C
°F
CURRENT WEATHER
19:48
New Castle
60°F
SE 9 mph
Feels like: 58°F
Precip: 2%
World Resorts USA New Castle Weather

7 Day Weather Forecast

10.05
mon
DAY
72°F
SE 12 mph
precip
3%
NIGHT
56°F
S 9 mph
precip
2%
10.06
tue
DAY
60°F
SE 8 mph
precip
1%
NIGHT
50°F
NE 4 mph
precip
3%
10.07
wed
DAY
66°F
N 9 mph
precip
1%
NIGHT
56°F
N 7 mph
precip
7%
10.08
thu
DAY
78°F
E 9 mph
precip
2%
NIGHT
62°F
S 7 mph
precip
3%
10.09
fri
DAY
68°F
SE 6 mph
precip
1%
NIGHT
56°F
E 4 mph
precip
3%
10.10
sat
DAY
70°F
SE 2 mph
precip
10%
NIGHT
60°F
N 4 mph
precip
15%
10.11
sun
DAY
62°F
NW 6 mph
precip
33%
NIGHT
64°F
NW 9 mph
precip
70%

New Castle Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for New Castle was 19.0°F. The maximum and minimum values were 14.6°F and 22.7°F respectively.

New Castle on the Weather Map

Best Time to Visit New Castle
The most sunny months:
November 17 days
October 16 days
June 15 days
The most warm months:
July 89.9 °F
August 86.4 °F
June 83.9 °F
Warmest sea temperature:
July 84.1 °F
August 83.4 °F
September 77.4 °F
The most cold months:
January 37.3 °F
February 40.7 °F
December 42.3 °F
The most rainy months:
July 3 days
August 3 days
June 2 days
The most windy months:
March 9 mph
April 9 mph
January 8 mph
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