Current sea water temperature:
+80.6°F
| Minimum sea water temperature in August: | 86.2°F |
| Maximum sea water temperature in August: | 75.0°F |
| Average sea water temperature in August: | 80.0°F |
| more information | |
14 days
forecast
forecast
| New Castle |
monthly
weather
weather
| New Castle |
Sea water temperature for the last 10 days:
| August 15 | 80.6°F | August 10 | 81.7°F |
| August 14 | 82.2°F | August 9 | 81.5°F |
| August 13 | 80.6°F | August 8 | 81.1°F |
| August 12 | 80.8°F | August 7 | 80.6°F |
| August 11 | 82.6°F | August 6 | 80.2°F |
Monthly sea water temperature, °F
When is the warmest sea in New Castle?
Based on the data about daily sea water temperature for the last three years the warmest sea in New Castle was noticed in July, August and September.
Monthly Sea Temperatures in New Castle, °F
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 80.1°F. The highest and lowest sea temperatures during the month were 82.0°F and 76.1°F.
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 80.7°F. The highest and lowest sea temperatures during the month were 82.6°F and 79.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 73.5°F. The highest and lowest sea temperatures during the month were 75.7°F and 71.6°F.
current
weather
weather
| New Castle |
weather in
August
August
| New Castle |
Best time for vacation in New Castle
New Castle on a weather map
Places in USA:
Name
°F
24 Hours Forecast
New Castle
Local time: 03:44
August 15, saturday
0600
72°F
SW
6 mph
6 mph
0900
73°F
SW
6 mph
6 mph
1200
88°F
SW
4 mph
4 mph
1500
88°F
SE
5 mph
5 mph
1800
86°F
S
6 mph
6 mph
2100
75°F
NW
7 mph
7 mph
August 16, sunday
0000
72°F
N
6 mph
6 mph
0300
72°F
N
5 mph
5 mph
