Measurements:
°C
°F
Seaside
56°F
SW 3 mph
Feels like: 56°F
Precip: 29%
World Resorts USA Seaside Weather

Seaside Sea Water Temperature

Current Sea Water Temperature:
+60.0°F
Maximum Sea Water Temperature in September: 62.4°F
Minimum Sea Water Temperature in September: 50.8°F
Average water temperature in September: 56.7°F

Sea Water Temperature for the Last 10 Days:

September 15 60.0°F September 10 60.4°F
September 14 59.6°F September 09 60.8°F
September 13 58.8°F September 08 60.4°F
September 12 58.8°F September 07 59.6°F
September 11 59.4°F September 06 60.6°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, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Seaside was 57.6°F. The maximum and minimum values were 53.6°F and 63.2°F respectively.

Sea Water Temperature in September

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Seaside was 60.3°F. The maximum and minimum values were 58.8°F and 62.4°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Seaside was 57.1°F. The maximum and minimum values were 52.0°F and 61.4°F respectively.

Best Time to Visit Seaside
The most sunny months:
September 12 days
August 11 days
October 11 days
The most warm months:
August 66.6 °F
July 64.6 °F
September 64.2 °F
Warmest sea temperature:
August 58.1 °F
July 56.6 °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 +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +70
Sarasota +86
Washington +66
24 Hours Weather Forecast
Seaside
Local time: 07:29
15 sep, tuesday
0900 56°F
SW
3 mph
1200 58°F
S
6 mph
1500 60°F
SE
7 mph
1800 60°F
S
9 mph
2100 58°F
S
8 mph
16 sep, wednesday
0000 56°F
SW
6 mph
0300 56°F
SW
7 mph
0600 54°F
SW
7 mph