Measurements:
°C
°F
CURRENT WEATHER
08:19
Kauai
78°F
W 9 mph
Feels like: 82°F
Precip: 100%
World Resorts USA Kauai Weather

7 Day Weather Forecast

04.23
thu
DAY
80°F
SW 10 mph
precip
100%
NIGHT
74°F
SW 7 mph
precip
63%
04.24
fri
DAY
80°F
W 9 mph
precip
0%
NIGHT
74°F
W 10 mph
precip
100%
04.25
sat
DAY
78°F
W 12 mph
precip
100%
NIGHT
74°F
W 10 mph
precip
100%
04.26
sun
DAY
78°F
W 9 mph
precip
100%
NIGHT
74°F
W 9 mph
precip
100%
04.27
mon
DAY
80°F
W 11 mph
precip
100%
NIGHT
74°F
W 9 mph
precip
100%
04.28
tue
DAY
78°F
W 11 mph
precip
100%
NIGHT
74°F
W 11 mph
precip
75%
04.29
wed
DAY
80°F
W 12 mph
precip
69%
NIGHT
74°F
W 9 mph
precip
75%

Kauai Sea Water Temperature in April, °F

Select Year: 2026 2025 2024

The average sea surface temperature in April 2026 for Kauai was 24.3°F. The maximum and minimum values were 23.9°F and 25.2°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:
January 2 days
March 2 days
February 2 days
The most windy months:
July 11 mph
June 11 mph
May 11 mph
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