Measurements:
°C
°F
CURRENT WEATHER
07:27
Seaside
56°F
SW 3 mph
Feels like: 56°F
Precip: 29%
World Resorts USA Seaside Weather

7 Day Weather Forecast

09.15
tue
DAY
58°F
S 6 mph
precip
23%
NIGHT
56°F
SW 6 mph
precip
13%
09.16
wed
DAY
64°F
S 11 mph
precip
5%
NIGHT
58°F
S 8 mph
precip
11%
09.17
thu
DAY
60°F
E 4 mph
precip
5%
NIGHT
56°F
N 9 mph
precip
17%
09.18
fri
DAY
60°F
NE 6 mph
precip
21%
NIGHT
56°F
SW 8 mph
precip
14%
09.19
sat
DAY
60°F
S 13 mph
precip
10%
NIGHT
56°F
S 10 mph
precip
14%
09.20
sun
DAY
58°F
NW 11 mph
precip
12%
NIGHT
58°F
S 10 mph
precip
17%
09.21
mon
DAY
60°F
NW 6 mph
precip
24%
NIGHT
58°F
NW 9 mph
precip
19%

Seaside Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Seaside was 15.1°F. The maximum and minimum values were 14.4°F and 16.2°F respectively.

Seaside on the Weather Map

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
more details