Kailua-Kona, 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
Good
Best time to visit: April – November
What is the weather like in Kailua-Kona, Hawaii in May?
In May, Kailua-Kona, Hawaii is warm: daytime highs average 24 °C, and nights cool down to about 19 °C. The sea averages 25.6 °C – pleasant for swimming. The sun shines for around 8 hours a day. It rains often – on about 29 days, adding up to 244 mm. All in all, May is a good month for a holiday in Kailua-Kona, Hawaii.
May compared
How the weather changes from April to June. Tap a month to open it.
More details for May
- Daylight
- 13 h 3 min05:49 – 18:52
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or moreAll months
- Wind
- 8 km/haverage daily peakAll months
- Cloud cover
- 59 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−10Pacific/Honolulu
How the score comes together
- Temperatureweight 35 %80 %
- Seaweight 25 %100 %
- Sunshineweight 20 %85 %
- Few rainy daysweight 20 %0 %
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
- Rain jacket or umbrella
Kailua-Kona, Hawaii in May: quick answers
Is Kailua-Kona, Hawaii hot in May?
Warm rather than hot: in May, daytime highs in Kailua-Kona, Hawaii average 24 °C and nights cool to about 19 °C.
Can you swim in Kailua-Kona, Hawaii in May?
Yes. In May the sea averages 25.6 °C – pleasant for swimming.
Does it rain much in Kailua-Kona, Hawaii in May?
It rains often – on about 29 days, adding up to 244 mm.
Kailua-Kona, Hawaii month by month
The whole year in Kailua-Kona, HawaiiAll destinations: USAHawaii weather in MayWhere 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). Sources & licences