Weather in May
The ideal ocean temperature of 77.5°F (25.3°C) makes May in Punaluu, Hawaii, the best time for swimming and other water activities.
Note: For activities in the water such as swimming or diving, temperatures from 77°F (25°C) to 84.2°F (29°C) are considered optimal for prolonged enjoyment without discomfort.
On the first day of May, sunrise is at 5:59 am and sunset at 6:57 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 7:10 pm HST.
Ocean temperature
In May, the average ocean temperature is 77.5°F (25.3°C).Note: For activities in the water such as swimming or diving, temperatures from 77°F (25°C) to 84.2°F (29°C) are considered optimal for prolonged enjoyment without discomfort.
Daylight
In May, the average length of the day is 13h and 11min.On the first day of May, sunrise is at 5:59 am and sunset at 6:57 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 7:10 pm HST.
Updated: Aug 9, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How warm is the water in May?
In May, the average ocean temperature is 77.5°F (25.3°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
What is the average length of the day in May?
In Punaluu, the average day length in May is 13h and 11min.
When are sunrise and sunset in May?
In May, on the first day of the month, sunrise is at 5:59 am and sunset at 6:57 pm. On the last day of the month, in Punaluu, sunrise is at 5:48 am and sunset at 7:10 pm HST.
Average sea temperature in May
Punaluu, HI
- Average sea temperature in May: 77.5°F
The best month for swimming (with the highest average sea temperature) is September (80.1°F).
The coldest month (with the lowest average sea temperature) is March (75°F).
Average daylight in May
Punaluu, HI
- Average daylight in May: 13h and 1min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 48min).
Punaluu, Hawaii, USA
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