Measurements:
°C
°F
CURRENT WEATHER
08:01
Kauai
76°F
W 11 mph
Feels like: 80°F
Precip: 100%
World Resorts USA Kauai Weather

7 Day Weather Forecast

05.14
thu
DAY
78°F
W 11 mph
precip
81%
NIGHT
74°F
W 8 mph
precip
100%
05.15
fri
DAY
78°F
W 10 mph
precip
76%
NIGHT
74°F
W 9 mph
precip
0%
05.16
sat
DAY
82°F
W 9 mph
precip
0%
NIGHT
76°F
W 9 mph
precip
63%
05.17
sun
DAY
82°F
W 12 mph
precip
88%
NIGHT
76°F
W 10 mph
precip
100%
05.18
mon
DAY
80°F
W 12 mph
precip
100%
NIGHT
76°F
W 12 mph
precip
100%
05.19
tue
DAY
80°F
W 12 mph
precip
100%
NIGHT
76°F
W 11 mph
precip
100%
05.20
wed
DAY
78°F
W 14 mph
precip
100%
NIGHT
74°F
W 14 mph
precip
100%

Kauai Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Kauai was 23.9°F. The maximum and minimum values were 23.6°F and 24.3°F respectively.

Kauai on the Weather Map

Best Time to Visit Kauai
The most sunny months:
January 6 days
December 5 days
February 4 days
The most warm months:
September 83.7 °F
August 83.4 °F
July 82.5 °F
Warmest sea temperature:
September 83.9 °F
October 83.8 °F
August 82.9 °F
The most cold months:
February 76.2 °F
March 76.9 °F
January 77.4 °F
The most rainy months:
March 2 days
January 2 days
February 2 days
The most windy months:
July 11 mph
June 11 mph
May 11 mph
more details