Measurements:
°C
°F
Seward
36°F
SE 2 mph
Feels like: 36°F
Precip: 100%
World Resorts USA Seward Weather

Seward Sea Water Temperature

Current Sea Water Temperature:
+43.0°F
Maximum Sea Water Temperature in December: 46.8°F
Minimum Sea Water Temperature in December: 39.6°F
Average water temperature in December: 42.0°F

Sea Water Temperature for the Last 10 Days:

December 05 43.0°F November 30 44.2°F
December 04 43.2°F November 29 44.4°F
December 03 43.4°F November 28 44.8°F
December 02 43.6°F November 27 45.0°F
December 01 43.8°F November 26 45.4°F

When is the Warmest Sea for Seward?

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

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Seward was 56.6°F. The maximum and minimum values were 53.8°F and 59.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Seward was 55.1°F. The maximum and minimum values were 53.4°F and 56.8°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Seward was 54.5°F. The maximum and minimum values were 53.0°F and 55.8°F respectively.

Best Time to Visit Seward
The most sunny months:
January 7 days
November 7 days
October 6 days
The most warm months:
July 62.2 °F
August 60.9 °F
June 59.2 °F
Warmest sea temperature:
August 56.9 °F
July 55.8 °F
September 53.7 °F
The most cold months:
January 17.3 °F
December 19.2 °F
February 22.8 °F
The most rainy months:
August 5 days
September 5 days
October 4 days
The most windy months:
January 5 mph
November 5 mph
December 5 mph

Seward on the Weather Map

USA Resorts:
NAME
Chicago -2
Hawaii +78
Honolulu +78
Houston +44
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +20
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Seward
Local time: 00:07
05 dec, friday
0300 36°F
S
3 mph
0600 28°F
SE
6 mph
0900 22°F
S
7 mph
1200 28°F
S
7 mph
1500 26°F
S
6 mph
1800 22°F
S
9 mph
2100 18°F
S
10 mph
06 dec, saturday
0000 22°F
S
11 mph