Measurements:
°C
°F
CURRENT WEATHER
04:30
Oahu
72°F
SW 4 mph
Feels like: 72°F
Precip: 17%
World Resorts USA Oahu Weather

14 Day Weather Forecast

09.15
tue
DAY
84°F
W 7 mph
precip
13%
NIGHT
76°F
W 4 mph
precip
23%
09.16
wed
DAY
84°F
SW 11 mph
precip
17%
NIGHT
76°F
SW 9 mph
precip
32%
09.17
thu
DAY
82°F
W 11 mph
precip
26%
NIGHT
76°F
W 8 mph
precip
43%
09.18
fri
DAY
84°F
W 14 mph
precip
3%
NIGHT
74°F
W 9 mph
precip
25%
09.19
sat
DAY
82°F
W 11 mph
precip
16%
NIGHT
76°F
W 9 mph
precip
24%
09.20
sun
DAY
82°F
W 14 mph
precip
5%
NIGHT
74°F
W 9 mph
precip
19%
09.21
mon
DAY
80°F
W 13 mph
precip
22%
NIGHT
76°F
W 11 mph
precip
34%
09.22
tue
DAY
78°F
W 14 mph
precip
40%
NIGHT
76°F
W 12 mph
precip
39%
09.23
wed
DAY
80°F
W 14 mph
precip
45%
NIGHT
76°F
W 14 mph
precip
46%
09.24
thu
DAY
78°F
W 14 mph
precip
32%
NIGHT
76°F
W 11 mph
precip
29%
09.25
fri
DAY
76°F
W 7 mph
precip
27%
NIGHT
74°F
W 4 mph
precip
49%
09.26
sat
DAY
82°F
W 3 mph
precip
78%
NIGHT
76°F
W 2 mph
precip
71%
09.27
sun
DAY
78°F
W 5 mph
precip
70%
NIGHT
76°F
W 3 mph
precip
49%
09.28
mon
DAY
80°F
W 4 mph
precip
65%
NIGHT
76°F
W 3 mph
precip
64%

Oahu Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Oahu was 83.6°F. The maximum and minimum values were 82.6°F and 84.2°F respectively.

Oahu on the Weather Map

Best Time to Visit Oahu
The most sunny months:
January 8 days
September 6 days
August 5 days
The most warm months:
September 85.9 °F
August 85.3 °F
July 84.5 °F
Warmest sea temperature:
October 83.5 °F
September 83.4 °F
August 82.9 °F
The most cold months:
February 77.5 °F
March 78.5 °F
January 78.8 °F
The most rainy months:
March 1 day
April 1 day
December 1 day
The most windy months:
July 12 mph
May 11 mph
June 11 mph
more details
USA Resorts:
NAME
F°
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +70
Sarasota +86
Washington +66
all resorts
24 Hours Weather Forecast
Oahu
Local time: 04:30
15 sep, tuesday
0600 74°F
SW
4 mph
0900 78°F
W
6 mph
1200 84°F
W
7 mph
1500 84°F
SW
7 mph
1800 80°F
W
6 mph
2100 76°F
W
6 mph
16 sep, wednesday
0000 76°F
W
4 mph
0300 76°F
W
6 mph