World Resorts USA Seaside Weather

Seaside Sea Temperature in September

Average sea water temperature in September:
+55.7°F
Minimum sea water temperature in September: 61.0°F
Maximum sea water temperature in September: 50.7°F

Daily 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.

Monthly sea water temperature in Seaside, °F

Which USA resorts have warmest sea in September?

Place name September 2025 September 2024
Key West 86.9°F 87.4°F
Fort Lauderdale 86.4°F 86.4°F
Miami Beach 86.1°F 86.3°F
Naples 86.1°F 87.2°F
Corpus Christi 85.8°F 84.7°F
Miami 85.8°F 86.0°F
Houston 84.9°F 83.4°F
Sarasota 84.8°F 86.7°F
Cocoa Beach 84.6°F 85.2°F
Tampa 84.3°F 86.0°F
New Orleans 84.3°F 82.9°F
Clearwater Beach 84.0°F 86.2°F
Panama City Beach 83.4°F 84.8°F
Destin 83.1°F 84.5°F
Orlando 82.8°F 83.6°F
Daytona Beach 82.7°F 83.2°F
Kauai 81.5°F 79.4°F
Jacksonville 81.1°F 82.0°F
Honolulu 80.6°F 81.0°F
Hawaii 80.5°F 80.8°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 46.2 °F
January 47.3 °F
December 47.4 °F
Rainiest months:
January 8 days
November 6 days
December 5 days
Windiest months:
December 10.1 mph
January 9.5 mph
November 9.2 mph

Seaside on a weather map

Seaside
+55°F
NW 1 mph
Feels like: +55°F
Precip.: 29%
Places in USA:
Name
°F
+79°F
+77°F
+79°F
+59°F
+75°F
+84°F
+72°F
+72°F
+81°F
+64°F
+55°F
+77°F
+77°F
+79°F
+70°F
24 Hours Forecast
Seaside
Local time: 01:29
July 02, thursday
0300
55°F
S
4 mph
0600
55°F
S
4 mph
0900
57°F
SE
2 mph
1200
61°F
SE
6 mph
1500
61°F
SE
7 mph
1800
59°F
SE
6 mph
2100
55°F
SE
1 mph
July 03, friday
0000
54°F
NW
3 mph
Units of measurement: °C / °F