World Resorts USA Kauai

Kauai Monthly Weather Averages

Please click on any column to get detailed information about Kauai weather in that particular month. You will get daily weather information for that month for the last several years.

Day & Night air temperature, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
13
26
39
52
65
78
91
104
75.6
77.3
79.0
80.2
79.7
79.1
78.4
76.2
74.8
74.2
73.9
74.7
71.8
74.2
75.4
76.3
75.8
75.4
74.6
73.0
71.7
70.8
69.6
70.6
Day temperature   
Night temperature

The warmest month in Kauai is september. The average daily temp is 80.2°F. The average nightly temp is 76.3°F.

Sea water temperature, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
13
26
39
52
65
78
91
104
77.5
79.3
80.3
80.4
79.8
79
78.4
77.2
76
75.3
75.6
76.5

The warmest sea temperature usually observed in September. Average daily sea water temperature during this month is 80.4°F.

Precipitation total, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
1.1
1
0.9
0.5
0.5
0.6
0.5
0.8
1.1
1.7
0.9
1.2

June is the month with least precipitations during the year. The average precipitation totals for this month is 0.5 in. The month with most precipitation total is March.

Number of rainy days

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
3
1
1
1
0
0
0
0
1
1
2
1
2

This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.

Wind speed, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
2
4
6
8
10
12
14
9.2
10.5
8.7
10.4
10.9
11.9
10.8
10.3
10.3
10.6
10.2
8.8
Sunny, partly cloudy and cloudy days
1
2
3
4
5
6
7
8
9
10
11
12
0
5
10
15
20
25
30
35
18
20
17
14
19
24
18
19
21
20
16
14
8
8
12
14
12
7
10
11
9
9
9
10
5
2
2
2
0
0
2
1
1
2
4
6
Cloudy days   
Partly cloudy days   
Sunny days
Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
7
4.5
4.5
4.9
5.5
5.1
4.7
5.7
4.8
4.4
4.9
5
5.4

Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

* 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 80.2 °F
August 79.7 °F
July 79.1 °F
Warmest sea temp:
September 80.4 °F
October 80.3 °F
August 79.7 °F
Coldest months:
February 73.9 °F
March 74.2 °F
January 74.7 °F
Rainiest months:
March 2 days
January 2 days
November 1 day
Windiest months:
July 11.9 mph
August 10.9 mph
June 10.8 mph

Kauai on a weather map

Leaflet | Tiles © Esri
Places in USA:
Name
°F
Boston
+39°F
Washington
+57°F
Hawaii
+73°F
Honolulu
+73°F
Las Vegas
+66°F
Los Angeles
+59°F
Miami
+75°F
New York
+52°F
Orlando
+79°F
San Diego
+59°F
San Francisco
+50°F
Sarasota
+75°F
Tampa
+77°F
Houston
+72°F
Chicago
+54°F
all places
24 Hours Forecast
Kauai
Local time: 06:02
April 13, sunday
0900
75°F
W
15 mph
1200
75°F
W
14 mph
1500
75°F
SW
14 mph
1800
75°F
SW
14 mph
2100
73°F
SW
14 mph
April 14, monday
0000
73°F
W
13 mph
0300
73°F
W
11 mph
0600
73°F
W
12 mph
Units of measurement: °C / °F