25.08
tue
tue
Day
79°F
W 13 mph
Precip.
12%
12%
Night
72°F
W 11 mph
Precip.
8%
8%
26.08
wed
wed
Day
79°F
W 14 mph
Precip.
2%
2%
Night
72°F
W 10 mph
Precip.
23%
23%
27.08
thu
thu
Day
79°F
W 11 mph
Precip.
13%
13%
Night
70°F
W 7 mph
Precip.
8%
8%
28.08
fri
fri
Day
79°F
W 12 mph
Precip.
12%
12%
Night
70°F
W 9 mph
Precip.
21%
21%
29.08
sat
sat
Day
77°F
W 12 mph
Precip.
3%
3%
Night
72°F
W 7 mph
Precip.
21%
21%
30.08
sun
sun
Day
79°F
W 12 mph
Precip.
5%
5%
Night
72°F
SW 7 mph
Precip.
34%
34%
31.08
mon
mon
Day
79°F
SW 9 mph
Precip.
20%
20%
Night
73°F
SW 9 mph
Precip.
30%
30%
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 80.2°F. The highest and lowest sea temperatures during the month were 81.0°F and 79.7°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 79.8°F. The highest and lowest sea temperatures during the month were 80.6°F and 79.3°F.
Air temperature in Oahu, °F
Precipitation total in Oahu, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Oahu
Oahu on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Oahu
Local time: 10:55
August 25, tuesday
1200
79°F
W
13 mph
13 mph
1500
79°F
W
12 mph
12 mph
1800
73°F
W
11 mph
11 mph
2100
72°F
W
9 mph
9 mph
August 26, wednesday
0000
72°F
W
11 mph
11 mph
0300
70°F
W
11 mph
11 mph
0600
70°F
W
10 mph
10 mph
0900
75°F
W
14 mph
14 mph
