Current sea water temperature:
+65.7°F
| Minimum sea water temperature in May: | 70.2°F |
| Maximum sea water temperature in May: | 51.6°F |
| Average sea water temperature in May: | 61.6°F |
| more information | |
14 days
forecast
forecast
| New Castle |
monthly
weather
weather
| New Castle |
Sea water temperature for the last 10 days:
| May 19 | 65.7°F | May 14 | 62.4°F |
| May 18 | 64.2°F | May 13 | 61.7°F |
| May 17 | 64.0°F | May 12 | 60.4°F |
| May 16 | 63.7°F | May 11 | 61.2°F |
| May 15 | 62.8°F | May 10 | 61.9°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: 08:34
May 19, tuesday
0900
81°F
NE
6 mph
6 mph
1200
95°F
NE
8 mph
8 mph
1500
102°F
NE
10 mph
10 mph
1800
91°F
NE
7 mph
7 mph
2100
81°F
NE
7 mph
7 mph
May 20, wednesday
0000
75°F
NE
9 mph
9 mph
0300
72°F
NE
7 mph
7 mph
0600
72°F
NE
6 mph
6 mph
