Measurements:
°C
°F
Rehoboth Beach
16°F
SE 22 mph
Feels like: 0°F
Precip: 0%
World Resorts USA Rehoboth Beach Weather

Rehoboth Beach Sea Water Temperature

Current Sea Water Temperature:
+35.0°F
Maximum Sea Water Temperature in January: 46.2°F
Minimum Sea Water Temperature in January: 32.0°F
Average water temperature in January: 40.9°F

Sea Water Temperature for the Last 10 Days:

January 29 35.0°F January 24 37.0°F
January 28 35.0°F January 23 37.8°F
January 27 35.4°F January 22 37.8°F
January 26 36.6°F January 21 38.4°F
January 25 37.2°F January 20 38.4°F

When is the Warmest Sea for Rehoboth Beach?

According to our data for the last three years for Rehoboth Beach the highest average sea water temperature was in July, August and September.

Average Water Temperature by Month, °F

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Rehoboth Beach was 80.4°F. The maximum and minimum values were 76.8°F and 83.8°F respectively.

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Rehoboth Beach was 79.3°F. The maximum and minimum values were 76.4°F and 86.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Rehoboth Beach was 75.0°F. The maximum and minimum values were 73.2°F and 77.4°F respectively.

Best Time to Visit Rehoboth Beach
The most sunny months:
November 17 days
October 15 days
December 13 days
The most warm months:
July 85.9 °F
August 83.1 °F
June 79.7 °F
Warmest sea temperature:
July 79.3 °F
August 78.5 °F
September 75.8 °F
The most cold months:
January 39.5 °F
February 43.2 °F
December 44.8 °F
The most rainy months:
August 4 days
March 3 days
July 3 days
The most windy months:
January 12 mph
March 12 mph
April 11 mph

Rehoboth Beach on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +74
Honolulu +74
Houston +38
Las Vegas +48
Los Angeles +56
Maui +68
Miami +64
Miami Beach +70
New York +12
San Diego +60
San Francisco +50
Sarasota +58
Tampa +58
Washington +12
24 Hours Weather Forecast
Rehoboth Beach
Local time: 10:53
29 jan, thursday
1200 16°F
SE
22 mph
1500 18°F
SE
22 mph
1800 18°F
SE
16 mph
2100 18°F
SE
16 mph
30 jan, friday
0000 16°F
SE
17 mph
0300 14°F
SE
15 mph
0600 14°F
SE
15 mph
0900 12°F
SE
15 mph