Measurements:
°C
°F
Oahu
74°F
W 4 mph
Feels like: 74°F
Precip: 0%
World Resorts USA Oahu Weather May Weather in Oahu

Oahu Weather: May

Average Day Temperature: 81.2°F
Average Night Temperature: 75.2°F
Sea Water Temperature: 79.8°F
Number of Sunny Days: 2 days
Sunshine Hours: 12.9 - 13.4 hours
Number of Rainy Days: 0 days
Precipitation Totals: 0.4 in

Air Temperature in May, °F

Select Year: 2025 2024 2023

The highest day temperature in May 2025 was 82°F. The lowest night temperature was 76°F. The average values for day and night temperatures during May were 80.5°F и 77.2°F respectivly.

Oahu Water Sea Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Oahu was 80.1°F. The maximum and minimum values were 79.4°F and 80.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Oahu is 0.4 in.

Wind Speed in May, mph

The average wind speed in May is 11.8 mph. It makes May one of the most windy months of the year for Oahu.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Oahu in May is 5.9 hours.

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 84.7 °F
Warmest sea temperature:
October 83.5 °F
September 83.4 °F
August 82.8 °F
The most cold months:
February 78.1 °F
March 78.9 °F
January 79.1 °F
The most rainy months:
March 1 day
December 1 day
April 1 day
The most windy months:
July 12 mph
May 12 mph
June 11 mph

Oahu on the Weather Map

USA Resorts:
NAME
Chicago 0
Hawaii +78
Honolulu +78
Houston +46
Las Vegas +40
Los Angeles +52
Maui +72
Miami +72
Miami Beach +80
New York +18
San Diego +54
San Francisco +46
Sarasota +62
Tampa +62
Washington +28
24 Hours Weather Forecast
Oahu
Local time: 20:45
04 dec, thursday
2100 74°F
W
4 mph
05 dec, friday
0000 72°F
W
6 mph
0300 74°F
W
14 mph
0600 74°F
W
11 mph
0900 78°F
NW
7 mph
1200 82°F
W
8 mph
1500 80°F
SW
7 mph
1800 76°F
W
8 mph