Measurements:
°C
°F
CURRENT WEATHER
11:25
Oahu
82°F
W 13 mph
Feels like: 86°F
Precip: 12%
World Resorts USA Oahu Weather

7 Day Weather Forecast

08.25
tue
DAY
82°F
W 13 mph
precip
12%
NIGHT
74°F
W 11 mph
precip
8%
08.26
wed
DAY
82°F
W 14 mph
precip
2%
NIGHT
74°F
W 10 mph
precip
23%
08.27
thu
DAY
82°F
W 11 mph
precip
13%
NIGHT
72°F
W 7 mph
precip
8%
08.28
fri
DAY
82°F
W 12 mph
precip
12%
NIGHT
72°F
W 9 mph
precip
21%
08.29
sat
DAY
80°F
W 12 mph
precip
3%
NIGHT
74°F
W 7 mph
precip
21%
08.30
sun
DAY
82°F
W 12 mph
precip
5%
NIGHT
74°F
SW 7 mph
precip
34%
08.31
mon
DAY
82°F
SW 9 mph
precip
20%
NIGHT
76°F
SW 9 mph
precip
30%

Oahu Sea Water Temperature in August, °F

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Oahu was 26.8°F. The maximum and minimum values were 26.5°F and 27.2°F respectively.

Oahu on the Weather Map

Best Time to Visit Oahu
The most sunny months:
January 8 days
September 6 days
August 6 days
The most warm months:
September 85.9 °F
August 85.7 °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
August 11 mph
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