What May feels like in Honolulu
As a tropical city, Honolulu is warm all year; May is not part of a clear dry or wet season. Afternoons are warm and pleasant, good for long days out. Little changes after sunset — nights stay warm, only slightly below the daytime level. Some humidity hangs in the air, noticeable when the sun is strong.
Rain in Honolulu in May
Expect a mix of dry and wet days, with rain about one day in 3. Each rainy day adds about 4 mm (0.2 in), a proper wetting rather than a sprinkle. The yearly figure is similar, around 4.6 mm per wet day.
Daylight and sunshine in May
On 15 May the sun rises at about 5:53 am and sets around 7:02 pm local time, giving 13 h 8 min of daylight. Since mid-April the day has gained 31 min. Measured sunshine covers about 96% of the daylight — skies are mostly clear.
How May compares to the rest of the year
In Honolulu's temperature order, May sits as the 6th coolest month. Against April, the average high is 1°C (1.8°F) higher, with 2 mm less rain. June continues the upward trend. By June, typical highs are 27.4°C (81.3°F).
Who May suits
- Sightseeing: a good fit — daytime temperatures are fine for walking around.
- Parks & outdoor: less ideal — afternoons are too warm to linger outside.
- Beach: less ideal — too many rainy days.
- Hiking: a good fit — mild temperatures for trails.
Tips for visiting Honolulu in May
Rain Protection
A packable rain jacket saves the day on showery afternoons.
Sunglasses
Plenty of sun, so bring sunglasses and a cap.
Quick questions
How warm is Honolulu in May?
Expect around 26.5°C (79.7°F) in the afternoon and 22.3°C (72.1°F) at night, which most visitors would call warm.
Does it rain a lot in Honolulu in May?
It does: about 9 rainy days bring roughly 36 mm, so plan some indoor options.
What should I wear in Honolulu in May?
The numbers point to rain protection and sunglasses. Evenings feel similar to the day, so the same clothes work from morning to night.
Is May or June better for visiting Honolulu?
On our 12-month climate ranking, May comes out ahead (#5 of 12 vs #7). June has fewer rainy days.