Measurements:
°C
°F
Kauai
74°F
NW 9 mph
Feels like: 74°F
Precip: 100%
World Resorts USA Kauai Weather

Kauai Sea Water Temperature

Current Sea Water Temperature:
+77.6°F
Maximum Sea Water Temperature in April: 80.8°F
Minimum Sea Water Temperature in April: 77.2°F
Average water temperature in April: 79.0°F

Sea Water Temperature for the Last 10 Days:

April 28 77.6°F April 23 77.6°F
April 27 77.4°F April 22 77.4°F
April 26 77.2°F April 21 77.6°F
April 25 77.2°F April 20 77.6°F
April 24 77.4°F April 19 78.6°F

When is the Warmest Sea for Kauai?

According to our data for the last three years for Kauai the highest average sea water temperature was in September, October and August.

Average Water Temperature by Month, °F

Sea Water Temperature in September

Select Year: 2023 2022 2021

The average sea surface temperature in September 2023 for Kauai was 83.7°F. The maximum and minimum values were 83.4°F and 84.2°F respectively.

Sea Water Temperature in October

Select Year: 2023 2022 2021

The average sea surface temperature in October 2023 for Kauai was 84.0°F. The maximum and minimum values were 83.4°F and 84.6°F respectively.

Sea Water Temperature in August

Select Year: 2023 2022 2021

The average sea surface temperature in August 2023 for Kauai was 83.5°F. The maximum and minimum values were 82.8°F and 84.2°F respectively.

Best Time to Visit Kauai
The most sunny months:
January 6 days
December 5 days
October 3 days
The most warm months:
September 83.3 °F
August 82.9 °F
July 82.3 °F
Warmest sea temperature:
September 84.0 °F
October 83.9 °F
August 83.3 °F
The most cold months:
February 76.0 °F
March 76.5 °F
April 77.5 °F
The most rainy months:
January 3 days
March 2 days
May 1 day
The most windy months:
July 12 mph
February 11 mph
August 11 mph

Kauai on the Weather Map

USA Resorts:
NAME
Boston +64
Chicago +66
Hawaii +76
Honolulu +76
Houston +86
Las Vegas +70
Los Angeles +64
Miami +80
New York +64
Orlando +84
San Diego +62
San Francisco +56
Sarasota +86
Tampa +84
Washington +72
24 Hours Weather Forecast
Kauai
Local time: 06:57
28 apr, sunday
0900 78°F
NW
7 mph
1200 82°F
W
6 mph
1500 80°F
SW
4 mph
1800 78°F
W
6 mph
2100 76°F
W
10 mph
29 apr, monday
0000 74°F
W
10 mph
0300 74°F
NW
11 mph
0600 74°F
NW
8 mph