World Resorts USA Kauai Weather

Kauai Sea Temperature in August

Average sea water temperature in August:
+79.8°F
Minimum sea water temperature in August: 81.3°F
Maximum sea water temperature in August: 76.1°F

Daily sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 80.4°F. The highest and lowest sea temperatures during the month were 81.0°F and 79.3°F.

Monthly sea water temperature in Kauai, °F

Which USA resorts have warmest sea in August?

Place name August 2026 August 2025
Key West 88.8°F 88.8°F
Naples 88.1°F 88.7°F
New Orleans 88.0°F 87.4°F
Houston 87.8°F 87.8°F
Miami 87.3°F 88.1°F
Bay Saint Louis 87.2°F 86.6°F
Miami Beach 87.1°F 87.9°F
Sarasota 87.1°F 88.6°F
Siesta Key 87.1°F 88.6°F
Pensacola 86.9°F 86.5°F
Clearwater Beach 86.8°F 88.5°F
Tampa 86.8°F 88.6°F
Fort Lauderdale 86.8°F 87.2°F
St. George Island 86.7°F 86.5°F
Corpus Christi 86.5°F 87.0°F
West Palm Beach 86.4°F 86.8°F
Pensacola Beach 86.4°F 86.6°F
Orange Beach 86.3°F 86.5°F
Panama City Beach 86.3°F 86.2°F
Hilton Head Island 86.2°F 85.0°F

Best time for vacation in Kauai

Sunniest months:
January 6 days
December 5 days
February 4 days
Warmest months:
September 80.3 °F
August 79.8 °F
October 79.1 °F
Warmest sea temp:
September 80.6 °F
October 80.4 °F
August 79.7 °F
Coldest months:
February 73.6 °F
March 74.2 °F
January 74.6 °F
Rainiest months:
March 2 days
January 2 days
February 2 days
Windiest months:
July 11.7 mph
June 10.8 mph
May 10.8 mph

Kauai on a weather map

Kauai
+77°F
W 11 mph
Feels like: +81°F
Precip.: 4%
Places in USA:
Name
°F
+68°F
+75°F
+79°F
+91°F
+84°F
+86°F
+72°F
+91°F
+75°F
+72°F
+64°F
+77°F
+88°F
+72°F
24 Hours Forecast
Kauai
Local time: 10:57
September 14, monday
1200
77°F
W
11 mph
1500
77°F
W
11 mph
1800
75°F
W
9 mph
2100
73°F
W
9 mph
September 15, tuesday
0000
73°F
W
8 mph
0300
72°F
NW
7 mph
0600
72°F
W
8 mph
0900
75°F
W
10 mph
Units of measurement: °C / °F