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Hawaii weather in May 2025
Expect 28°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Hawaii in May. Check more long-term weather averages for Hawaii in May before you book your next holiday to Hawaii in 2025/2026.
- 28°C max day temperature
28 - 9 hours of sunshine per day
- 8 days with some rainfall
8 - 20°C min night temperature
20 - 13 hours of daylight per day
13 - Moderate heat & humidity
M - 16 mm of monthly rainfall
16 - 11 (Extreme) UV index
11 - 25°C sea temperature
25
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Recommended for Hawaii
The May weather guide for Hawaii (Honolulu, Oahu) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Top Hawaii destinations
Below are average maximum temperatures at popular countries, regions and places in Hawaii in May. Select a holiday destination to see more weather parameters.
All Hawaii destinations
- Halawa Bay, Molokai
- Hana, Maui
- Hanalei, Kauai
- Hilo, Big Island
- Honolulu, Oahu
- Hulopoe Bay, Lanai
- Kaanapali, Maui
- Kahului, Maui
- Kailua, Big Island
- Kailua, Oahu
- Kalaupapa, Molokai
- Kapalua, Maui
- Lahaina, Maui
- Lihue, Kauai
- Papohaku Beach, Molokai
- Waimea Bay, Oahu
- Waimea, Big Island
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Hawaii in May?
Daytime temperatures usually reach 28°C in Honolulu, Oahu, Hawaii in May with moderate heat and humidity, falling to 20°C at night.
How sunny is it in Hawaii in May?
There are normally 9 hours of bright sunshine each day in Honolulu, Oahu, Hawaii in May - that's 67% of daylight hours.
How warm is the sea around Hawaii in May?
The average sea temperature around Honolulu, Oahu, Hawaii in May is 25°C.
Does it rain in Hawaii in May?
There are usually 8 days with some rain in Honolulu, Oahu, Hawaii in May and the average monthly rainfall is 16mm.
Hawaii May sunrise & sunset times
Browse the sunrise and sunset times for Hawaii in May 2025. Select a month to view Hawaii sunrise and sunset times for the next 12 months. The Hawaii sunrise and sunset times shown below are for Honolulu, Oahu.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Thursday, 1st May 2025 | 06:00 | 18:57 |
| Friday, 16th May 2025 | 05:53 | 19:03 |
| Saturday, 31st May 2025 | 05:49 | 19:10 |
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