World Resorts USA New Castle Weather

New Castle Sea Temperature in January

Average sea water temperature in January:
+37.8°F
Minimum sea water temperature in January: 43.9°F
Maximum sea water temperature in January: 31.5°F

Daily sea water temperature in January, °F

Show year:
2026
2025
2024

The average sea water temperature in January of 2026 was 35.5°F. The highest and lowest sea temperatures during the month were 37.9°F and 31.5°F.

Monthly sea water temperature in New Castle, °F

Which USA resorts have warmest sea in January?

Place name January 2026 January 2025
Hilo 77.3°F 77.2°F
Molokai 77.3°F 77.4°F
Honolulu 77.2°F 77.6°F
Hawaii 77.2°F 77.5°F
Maui 77.0°F 76.9°F
Kauai 77.0°F 75.0°F
Oahu 76.1°F 76.5°F
Fort Lauderdale 75.9°F 75.1°F
Miami Beach 74.0°F 73.1°F
Key West 72.5°F 70.3°F
Miami 71.2°F 70.7°F
Naples 67.7°F 64.7°F
Cocoa Beach 66.9°F 60.9°F
Siesta Key 65.0°F 61.5°F
Sarasota 65.0°F 61.2°F
Orlando 64.8°F 59.8°F
Tampa 64.3°F 60.4°F
Daytona Beach 64.1°F 59.7°F
Corpus Christi 63.9°F 61.6°F
St. Petersburg 63.5°F 59.6°F

Best time for vacation in New Castle

Sunniest months:
November 17 days
October 16 days
June 15 days
Warmest months:
July 85.5 °F
August 82.4 °F
June 80.5 °F
Warmest sea temp:
July 80.8 °F
August 80.0 °F
September 74.5 °F
Coldest months:
January 38.6 °F
February 41.6 °F
December 43.1 °F
Rainiest months:
July 3 days
August 3 days
June 2 days
Windiest months:
March 9.2 mph
April 8.7 mph
January 8.5 mph

New Castle on a weather map

New Castle
+75°F
N 9 mph
Feels like: +77°F
Precip.: 3%
Places in USA:
Name
°F
+70°F
+79°F
+84°F
+63°F
+82°F
+84°F
+75°F
+79°F
+77°F
+66°F
+57°F
+79°F
+77°F
+81°F
+73°F
24 Hours Forecast
New Castle
Local time: 23:45
July 01, wednesday
0000
75°F
N
9 mph
0300
72°F
N
7 mph
0600
72°F
NE
7 mph
0900
81°F
NE
9 mph
1200
97°F
NE
7 mph
1500
95°F
NE
7 mph
1800
95°F
NE
7 mph
2100
84°F
N
6 mph
Units of measurement: °C / °F