World Resorts USA Kauai Weather

Kauai weather in September

Weather in Kauai: September

Average day temperature: 80.2°F
Average night temperature: 76.3°F
Sea water temperature: 80.4°F
Number of sunny days: 2 days
Day length: 11.9 - 12.6 hours
Number of rainy days: 0 days
Precipitation totals: 0.5 in.

Air temperature in September, °F

Show year:
2024
2023
2022

The highest day temperature during September of 2024 was 83°F. At the same time the lowest night temperature was 73°F. Day and night temperature averages during September were 80.9°F and 74.7°F.

Sea water temperature in Kauai in September, °F

Show year:
2024
2023
2022

The average sea water temperature in September of 2024 was 79.4°F. The highest and lowest sea temperatures during the month were 79.7°F and 79.2°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are partly cloudy but sunny or cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Kauai in September is 0.5 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 10.4 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 5.5.

Best time for vacation in Kauai

Sunniest months:
January 6 days
December 5 days
February 2 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 73.4 °F
March 73.9 °F
January 74.8 °F
Rainiest months:
January 3 days
March 2 days
May 1 day
Windiest months:
July 11.9 mph
February 11.1 mph
August 10.9 mph

Kauai on a weather map

Kauai
+73°F
NW 4 mph
Feels like: +77°F
Precip.: 64%
Places in USA:
Name
°F
+16°F
+25°F
+75°F
+75°F
+54°F
+54°F
+63°F
+21°F
+52°F
+52°F
+54°F
+50°F
+48°F
+46°F
+23°F
24 Hours Forecast
Kauai
Local time: 22:04
December 22, sunday
0000
73°F
NW
4 mph
0300
72°F
N
2 mph
0600
72°F
NE
2 mph
0900
75°F
S
2 mph
1200
77°F
S
6 mph
1500
75°F
SW
6 mph
1800
73°F
SW
6 mph
2100
70°F
SW
6 mph
Units of measurement: °C / °F