Current sea water temperature:
+76.5°F
| Minimum sea water temperature in September: | 81.7°F |
| Maximum sea water temperature in September: | 68.9°F |
| Average sea water temperature in September: | 74.8°F |
| more information | |
14 days
forecast
forecast
| New Castle |
monthly
weather
weather
| New Castle |
Sea water temperature for the last 10 days:
| September 19 | 76.5°F | September 14 | 75.7°F |
| September 18 | 75.9°F | September 13 | 77.9°F |
| September 17 | 76.5°F | September 12 | 78.3°F |
| September 16 | 77.5°F | September 11 | 78.6°F |
| September 15 | 78.1°F | September 10 | 79.2°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 80.5°F. The highest and lowest sea temperatures during the month were 82.6°F and 78.8°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 78.0°F. The highest and lowest sea temperatures during the month were 79.9°F and 75.7°F.
current
weather
weather
| New Castle |
weather in
September
September
| 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: 06:11
September 19, saturday
0900
64°F
SW
10 mph
10 mph
1200
72°F
W
6 mph
6 mph
1500
75°F
SW
5 mph
5 mph
1800
70°F
NW
11 mph
11 mph
2100
63°F
NW
7 mph
7 mph
September 20, sunday
0000
64°F
W
7 mph
7 mph
0300
64°F
W
7 mph
7 mph
0600
63°F
W
6 mph
6 mph
