Current sea water temperature:
+58.6°F
| Minimum sea water temperature in April: | 61.3°F |
| Maximum sea water temperature in April: | 46.2°F |
| Average sea water temperature in April: | 53.4°F |
| more information | |
14 days
forecast
forecast
| New Castle |
monthly
weather
weather
| New Castle |
Sea water temperature for the last 10 days:
| April 28 | 58.6°F | April 23 | 58.1°F |
| April 27 | 56.8°F | April 22 | 59.7°F |
| April 26 | 60.6°F | April 21 | 59.7°F |
| April 25 | 59.4°F | April 20 | 60.8°F |
| April 24 | 58.3°F | April 19 | 61.2°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:
2025
2024
2023
The average sea water temperature in July of 2025 was 81.2°F. The highest and lowest sea temperatures during the month were 83.7°F and 78.4°F.
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 79.6°F. The highest and lowest sea temperatures during the month were 84.0°F and 75.9°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
May
May
| 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: 13:37
April 28, tuesday
1500
61°F
N
5 mph
5 mph
1800
57°F
N
6 mph
6 mph
2100
52°F
NW
4 mph
4 mph
April 29, wednesday
0000
52°F
NW
4 mph
4 mph
0300
50°F
N
3 mph
3 mph
0600
48°F
NW
4 mph
4 mph
0900
55°F
NW
6 mph
6 mph
1200
61°F
NW
9 mph
9 mph
