Weather in Honolulu in May 2025
Average weather
Average temperature in Honolulu in May
Going from a maximum of +29°C during the day to a minimum of +20°C during the night, the temperature in May averages around +28°C.
The average maximum temperature goes up 11% by the end of the month, compared with the beginning of the month, from +28°C to +29°C.
Is Honolulu warm or cold in May?
Honolulu is typically warm in May.
Maximum temperatures go up compared to the previous month from +27°C to +28°C. The minimum temperature also goes up from +21°C to +22°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Honolulu:
Water temperature in Honolulu in May
Water in Honolulu in May is Warm. It varies from +24°C to +26°C, with an average of +25°C. This is almost similar to the air temperature, which averages +28°C.
In May, water temperatures are average relative to the rest of the year:
Can you swim in Honolulu in May?
Climate in Honolulu in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +27°C | +28°C | +29°C | ||||
| Min. temperature | ||||||
| +15°C | +16°C | +19°C | ||||
| Max. temperature | ||||||
| +31°C | +32°C | +32°C | ||||
| Rainfall | ||||||
| 28 mm | 29 mm | 14 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 5 m/s | ||||
| Avg. water temperature | ||||||
| +25°C | +25°C | +26°C | ||||
| Humidity | ||||||
| 69% | 68% | 67% | ||||
| Air pressure | ||||||
| 1017 HPa | 1016 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 4 | 4 | 4 | ||||
| Cloudy days | ||||||
| 13 | 15 | 15 | ||||
| Rainy days | ||||||
| 13 | 12 | 10 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +27°C to +28°C during the day. Prepare for more rain. Average rainfall goes from 28 mm to 29 mm. It feels drier, as humidity decreases from 69% to 68%. The average wind speed doesn’t change much during May, staying around 4 m/s. The amount of sunny days stay about the same, averaging 4 sunny days during the month.
June brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Honolulu is gradually increasing during May, going from 4 m/s to 5 m/s over the course of the month.
Rain
How was the weather last May in Honolulu?
Climate Change over Years
The climate in Honolulu in May has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+25°C) and the highest in 1988 (+29°C). The driest year was 1983 with only 113 mm of rainfall, and the wettest year was 1982 with 1336 mm.
FAQ
Is May a good time to visit Honolulu?
Can you sunbathe in Honolulu in May?
Can you swim in Honolulu in May?
Is Honolulu rainy in May?
Is it sunny in Honolulu in May?
Other cities in USA
Monthly weather in Honolulu
Source of the data
For this page, we’ve looked at the typical weather in Honolulu, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.