World Resorts USA Kauai Weather

Kauai 7 Days Forecast

16.05
sat
Day
77°F
W 12 mph
Precip.
100%
Night
73°F
W 9 mph
Precip.
60%
17.05
sun
Day
79°F
W 12 mph
Precip.
0%
Night
73°F
W 12 mph
Precip.
100%
18.05
mon
Day
77°F
W 14 mph
Precip.
100%
Night
73°F
W 11 mph
Precip.
74%
19.05
tue
Day
77°F
W 13 mph
Precip.
100%
Night
72°F
W 12 mph
Precip.
100%
20.05
wed
Day
75°F
W 14 mph
Precip.
100%
Night
72°F
W 14 mph
Precip.
100%
21.05
thu
Day
75°F
W 14 mph
Precip.
100%
Night
72°F
W 15 mph
Precip.
100%
22.05
fri
Day
73°F
W 14 mph
Precip.
100%
Night
72°F
W 13 mph
Precip.
100%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 76.0°F. The highest and lowest sea temperatures during the month were 76.3°F and 75.6°F.

Air temperature in Kauai, °F

Precipitation total in Kauai, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Kauai

Sunniest months:
January 6 days
December 5 days
February 4 days
Warmest months:
September 80.3 °F
August 80.0 °F
July 79.2 °F
Warmest sea temp:
September 80.6 °F
October 80.4 °F
August 79.6 °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 10.9 mph
May 10.8 mph

Kauai on a weather map

Current weather
12:43
Kauai
+77°F
W 12 mph
Feels like: +81°F
Precip.: 100%
Places in USA:
Name
°F
Boston
+77°F
Hawaii
+79°F
Honolulu
+79°F
Las Vegas
+97°F
Los Angeles
+72°F
Miami
+84°F
Miami Beach
+84°F
Maui
+75°F
New York
+81°F
San Diego
+64°F
San Francisco
+72°F
Sarasota
+84°F
Tampa
+88°F
Houston
+82°F
Chicago
+59°F
all places
24 Hours Forecast
Kauai
Local time: 12:43
May 16, saturday
1500
77°F
W
13 mph
1800
75°F
W
12 mph
2100
73°F
W
9 mph
May 17, sunday
0000
73°F
W
9 mph
0300
73°F
W
7 mph
0600
73°F
W
8 mph
0900
75°F
W
9 mph
1200
79°F
W
12 mph
Units of measurement: °C / °F