Measurements:
°C
°F
CURRENT WEATHER
02:18
Hawaii
80°F
SW 12 mph
Feels like: 84°F
Precip: 25%
World Resorts USA Hawaii Weather

7 Day Weather Forecast

09.15
tue
DAY
84°F
SW 16 mph
precip
19%
NIGHT
82°F
SW 17 mph
precip
20%
09.16
wed
DAY
84°F
SW 20 mph
precip
19%
NIGHT
82°F
SW 20 mph
precip
23%
09.17
thu
DAY
84°F
SW 22 mph
precip
34%
NIGHT
80°F
SW 20 mph
precip
73%
09.18
fri
DAY
84°F
SW 21 mph
precip
7%
NIGHT
82°F
SW 17 mph
precip
21%
09.19
sat
DAY
82°F
W 17 mph
precip
22%
NIGHT
80°F
W 18 mph
precip
34%
09.20
sun
DAY
82°F
SW 22 mph
precip
19%
NIGHT
80°F
SW 21 mph
precip
24%
09.21
mon
DAY
82°F
SW 24 mph
precip
13%
NIGHT
80°F
SW 20 mph
precip
11%

Hawaii Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Hawaii was 27.1°F. The maximum and minimum values were 26.9°F and 27.3°F respectively.

Hawaii on the Weather Map

Best Time to Visit Hawaii
The most sunny months:
January 15 days
August 14 days
June 14 days
The most warm months:
August 86.6 °F
September 86.6 °F
July 85.7 °F
Warmest sea temperature:
September 84.2 °F
October 84.0 °F
August 83.6 °F
The most cold months:
February 78.9 °F
March 79.1 °F
January 79.4 °F
The most rainy months:
March 3 days
February 3 days
October 2 days
The most windy months:
July 17 mph
August 16 mph
June 16 mph
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