Oahu in May
May in Oahu brings highs around 85°F (29°C), lows near 71°F and about 6 rainy days. The sun sets around 7:03 pm. The sea is about 77°F (25°C). It's one of the most comfortable months for sightseeing.
Photo: Ossewa, CC BY-SA 4.0
What May is good for in Oahu
Each activity rated for May's weather and sea.
May next to April and June
| Month | April | May | June |
|---|---|---|---|
| High | 83°F (28°C) | 85°F (29°C) | 87°F (31°C) |
| Low | 70°F (21°C) | 71°F (22°C) | 74°F (23°C) |
| Rainy days | 8 | 6 | 6 |
| Sea | 76°F | 77°F | 78°F |
| Sunset | 6:51 pm | 7:03 pm | 7:15 pm |
| Daylight | 12 h 38 min | 13 h 10 min | 13 h 26 min |
Averages for Honolulu International Airport; sunrise and sunset on the 15th. Oahu water temperature by month.
Tours in Oahu
Oahu: Grand Tour Around Island with SnorkelingFrom $89View 
Oahu: Full or Half Day Grand Circle Island TourFrom $100View 
Pearl Harbor USS Arizona Memorial Tour from WaikikiFrom $55View 
Oahu Catamaran Snorkel Tour: See Turtles 100% GuaranteedFrom $50View 
Oahu Circle Island Snorkeling Tour: Dole, Pali Lookout & MoreFrom $118View 
Oahu Grand Circle Island Experience from WaikikiFrom $99View
Tours from Viator. Good Outing may earn a commission when you book, at no cost to you.
Questions
Is May a good time to visit Oahu?
It's one of the most comfortable months for sightseeing. The most comfortable months overall are January, February, March, April, May and December.
How hot is Oahu in May?
Average highs are about 85°F (29°C) and lows about 71°F (22°C).
Does it rain much in Oahu in May?
May averages 6 rainy days, against 9 in the wettest month.
How warm is the sea in Oahu in May?
About 77°F (25°C). Warm enough for long swims and snorkeling.
