Weather in Hawaii: May
 |
Average day temperature: | 79.3°F |
| Average night temperature: | 74.5°F | |
 |
Sea water temperature: | 77.5°F |
 |
Number of sunny days: | 13 days |
| Day length: | 12.9 - 13.3 hours | |
 |
Number of rainy days: | 2 days |
| Precipitation totals: | 1.1 in. | |
| more information | ||
forecast
| Hawaii |
temperature
| Hawaii |
Air temperature in May, °F
The highest day temperature during May of 2025 was 78°F. At the same time the lowest night temperature was 73°F. Daily and nightly averages during May were 77.5°F and 74.5°F.
Sea water temperature in Hawaii in May, °F
The average sea water temperature in May of 2025 was 78.0°F. The highest and lowest sea temperatures during the month were 78.4°F and 77.5°F.
Mostly all days in May are partly cloudy but sunny or cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Hawaii in May is 1.2 in. Other months of the year show relatively similar values.
The average wind speed value in May is 15.0 mph
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 6.1.
Best time for vacation in Hawaii
Hawaii on a weather map
6 mph
12 mph
15 mph
12 mph
11 mph
16 mph
21 mph
17 mph
