Measurements:
°C
°F
CURRENT WEATHER
16:19
New Castle
84°F
N 7 mph
Feels like: 94°F
Precip: 74%
World Resorts USA New Castle Weather

7 Day Weather Forecast

08.05
wed
DAY
82°F
N 7 mph
precip
25%
NIGHT
80°F
N 4 mph
precip
71%
08.06
thu
DAY
92°F
NE 11 mph
precip
5%
NIGHT
80°F
N 4 mph
precip
13%
08.07
fri
DAY
92°F
NE 6 mph
precip
3%
NIGHT
72°F
N 4 mph
precip
27%
08.08
sat
DAY
88°F
NE 7 mph
precip
4%
NIGHT
74°F
E 8 mph
precip
27%
08.09
sun
DAY
92°F
E 7 mph
precip
2%
NIGHT
80°F
N 6 mph
precip
9%
08.10
mon
DAY
94°F
E 9 mph
precip
3%
NIGHT
82°F
E 8 mph
precip
46%
08.11
tue
DAY
82°F
SE 6 mph
precip
14%
NIGHT
76°F
E 3 mph
precip
24%

New Castle Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for New Castle was 26.4°F. The maximum and minimum values were 24.4°F and 28.9°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 86.0 °F
June 83.9 °F
Warmest sea temperature:
July 84.1 °F
August 83.3 °F
September 77.2 °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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