World Resorts USA Seaside Weather

Seaside sea water temperature

Current sea water temperature:
+49.3°F
Minimum sea water temperature in February: 52.5°F
Maximum sea water temperature in February: 45.3°F
Average sea water temperature in February: 48.6°F

Sea water temperature for the last 10 days:

February 26 49.3°F February 21 50.0°F
February 25 50.4°F February 20 49.3°F
February 24 50.4°F February 19 48.7°F
February 23 50.5°F February 18 50.2°F
February 22 50.0°F February 17 50.5°F

When is the warmest sea in Seaside?

Based on the data about daily sea water temperature for the last three years the warmest sea in Seaside was noticed in August, July and September.

Monthly Sea Temperatures in Seaside, °F

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 57.3°F. The highest and lowest sea temperatures during the month were 60.1°F and 55.0°F.

Sea water temperature in July, °F

Show year:
2025
2024
2023

The average sea water temperature in July of 2025 was 53.3°F. The highest and lowest sea temperatures during the month were 55.8°F and 50.7°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 55.5°F. The highest and lowest sea temperatures during the month were 58.8°F and 50.7°F.

Best time for vacation in Seaside

Sunniest months:
August 13 days
September 12 days
July 11 days
Warmest months:
August 64.9 °F
July 63.1 °F
September 62.8 °F
Warmest sea temp:
August 57.4 °F
July 55.9 °F
September 55.7 °F
Coldest months:
February 46.1 °F
March 47.3 °F
January 47.3 °F
Rainiest months:
January 8 days
November 6 days
December 5 days
Windiest months:
December 10.1 mph
January 9.5 mph
February 9.2 mph

Seaside on a weather map

Seaside
+48°F
E 4 mph
Feels like: +46°F
Precip.: 0%
Places in USA:
Name
°F
+54°F
+72°F
+72°F
+88°F
+86°F
+75°F
+77°F
+68°F
+39°F
+81°F
+68°F
+73°F
+75°F
+75°F
+39°F
24 Hours Forecast
Seaside
Local time: 15:04
February 26, thursday
1800
46°F
E
2 mph
2100
43°F
NW
2 mph
February 27, friday
0000
41°F
N
3 mph
0300
43°F
N
5 mph
0600
43°F
NW
5 mph
0900
45°F
N
4 mph
1200
45°F
SE
5 mph
1500
45°F
SE
7 mph
Units of measurement: °C / °F