Measurements:
°C
°F
CURRENT WEATHER
17:55
New Castle
76°F
SE 6 mph
Feels like: 80°F
Precip: 5%
World Resorts USA New Castle Weather

7 Day Weather Forecast

08.25
tue
DAY
80°F
SE 9 mph
precip
3%
NIGHT
70°F
SE 4 mph
precip
7%
08.26
wed
DAY
82°F
N 4 mph
precip
11%
NIGHT
72°F
N 5 mph
precip
20%
08.27
thu
DAY
84°F
N 12 mph
precip
23%
NIGHT
72°F
N 4 mph
precip
37%
08.28
fri
DAY
88°F
NE 4 mph
precip
3%
NIGHT
74°F
SW 6 mph
precip
21%
08.29
sat
DAY
80°F
SW 4 mph
precip
5%
NIGHT
70°F
NW 3 mph
precip
13%
08.30
sun
DAY
86°F
N 6 mph
precip
4%
NIGHT
76°F
E 4 mph
precip
22%
08.31
mon
DAY
76°F
SE 4 mph
precip
43%
NIGHT
76°F
E 3 mph
precip
23%

New Castle Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for New Castle was 27.1°F. The maximum and minimum values were 26.3°F and 28.1°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 83.4 °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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