Measurements:
°C
°F
Seaside
54°F
SE 3 mph
Feels like: 54°F
Precip: 26%
World Resorts USA Seaside Weather

Seaside Sea Water Temperature

Current Sea Water Temperature:
+53.6°F
Maximum Sea Water Temperature in June: 62.0°F
Minimum Sea Water Temperature in June: 48.6°F
Average water temperature in June: 55.8°F

Sea Water Temperature for the Last 10 Days:

June 04 53.6°F May 29 56.0°F
June 03 52.8°F May 28 55.4°F
June 01 55.0°F May 27 56.0°F
May 31 55.8°F May 26 55.0°F
May 30 55.6°F May 25 54.6°F

When is the Warmest Sea for Seaside?

According to our data for the last three years for Seaside 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 Seaside was 58.1°F. The maximum and minimum values were 55.6°F and 61.2°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Seaside was 53.7°F. The maximum and minimum values were 50.8°F and 56.4°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Seaside was 56.2°F. The maximum and minimum values were 50.8°F and 59.8°F respectively.

Best Time to Visit Seaside
The most sunny months:
August 13 days
September 12 days
July 11 days
The most warm months:
August 66.5 °F
July 64.6 °F
September 64.2 °F
Warmest sea temperature:
August 58.2 °F
July 56.5 °F
September 56.4 °F
The most cold months:
February 45.7 °F
January 47.0 °F
December 47.1 °F
The most rainy months:
January 8 days
November 6 days
December 5 days
The most windy months:
December 10 mph
January 9 mph
November 9 mph

Seaside on the Weather Map

USA Resorts:
NAME
Boston +90
Chicago +76
Hawaii +78
Honolulu +78
Houston +86
Las Vegas +94
Los Angeles +68
Maui +70
Miami +82
Miami Beach +84
New York +94
San Diego +64
San Francisco +60
Sarasota +94
Tampa +92
24 Hours Weather Forecast
Seaside
Local time: 10:13
04 jun, thursday
1200 58°F
SE
8 mph
1500 60°F
SE
9 mph
1800 58°F
SE
7 mph
2100 52°F
SE
2 mph
05 jun, friday
0000 50°F
NE
4 mph
0300 50°F
N
6 mph
0600 52°F
N
6 mph
0900 52°F
N
9 mph