Honolulu, Hawaii weather in May
Temperature, sea and sunshine in May: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in May
Excellent
Best time to visit: January – December
What is the weather like in Honolulu, Hawaii in May?
In May, Honolulu, Hawaii is warm: daytime highs average 26 °C, and even at night it stays warm at around 23 °C. The sea averages 25.1 °C – pleasant for swimming. With around 9 hours of sunshine a day, there is plenty of sun. Rain falls on about 9 days, adding up to 32 mm. The air is often humid and muggy. All in all, May is an excellent month for a holiday in Honolulu, Hawaii.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 13 h 8 min05:53 – 19:02
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 23 daysdew point 18 °C or more
- Wind
- 21 km/haverage daily peak
- Cloud cover
- 47 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−10Pacific/Honolulu
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %100 %
- Few rainy daysweight 20 %66 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in May
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Honolulu, Hawaii in May: quick answers
Is Honolulu, Hawaii hot in May?
Warm rather than hot: in May, daytime highs in Honolulu, Hawaii average 26 °C and nights cool to about 23 °C.
Can you swim in Honolulu, Hawaii in May?
Yes. In May the sea averages 25.1 °C – pleasant for swimming.
Does it rain much in Honolulu, Hawaii in May?
Rain falls on about 9 days, adding up to 32 mm.
Honolulu, Hawaii month by month
The whole year in Honolulu, HawaiiAll destinations: USAWhere to go in MaySea temperature in May
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)