May weather forecastWahiawa, HI
May
Weather in May
Come May, Wahiawa fully embraces summer and the weather reflects the seasonal shift. Rates of rainfall decrease, while sunny days increase, paving the way for plenty outdoor activities. This change launches a season ideal for exploring Oahu’s natural wonders. A warm breeze rustles the palm leaves, offering soothing auditory feeds. The mercury reaches its peak during May with a high temperature of 79.2°F (26.2°C).Temperature
May records an average high-temperature of a still moderately hot 79.2°F (26.2°C), indicating a minor variation from the preceding month. Wahiawa reports an average low-temperature of 71.4°F (21.9°C) during the subtly cooler May nights.Humidity
In May, the average relative humidity is 74%.Rainfall
In Wahiawa, during May, the rain falls for 22.7 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, in Wahiawa, there are 252.2 rainfall days, and 22.09" (561mm) of precipitation is accumulated.Daylight
In May, the average length of the day is 13h and 10min.On the first day of the month, sunrise is at 6:00 am and sunset at 6:57 pm. On the last day of May, sunrise is at 5:49 am and sunset at 7:10 pm HST.
Sunshine
In May, the average sunshine is 8.2h.UV index
March through November, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Wahiawa, HI
- Average high temperature in May: 79.2°F
The warmest month (with the highest average high temperature) is August (82.6°F).
The month with the lowest average high temperature is February (75.6°F).
- Average low temperature in May: 71.4°F
The month with the highest average low temperature is September (74.3°F).
The coldest month (with the lowest average low temperature) is February (66.7°F).
Average pressure in May
Wahiawa, HI
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in May
Wahiawa, HI
- Average wind speed in May: 8.3mph
The windiest months (with the highest average wind speed) are June and July (10.2mph).
The calmest month (with the lowest average wind speed) is October (7.6mph).
Average humidity in May
Wahiawa, HI
- Average humidity in May: 74%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is September (73%).
Average rainfall in May
Wahiawa, HI
- Average rainfall in May: 2.17"
The wettest month (with the highest rainfall) is October (2.6").
The driest month (with the least rainfall) is July (1.26").
Average rainfall days in May
Wahiawa, HI
- Average rainfall days in May: 22.7 days
The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is January (16 days).
Average daylight in May /
Average sunshine in May
Wahiawa, HI
- Average daylight in May: 13h and 12min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 48min).
- Average sunshine in May: 8h and 12min
The month with the most sunshine is June (Average sunshine: 8h and 24min).
The month with the least sunshine is November (Average sunshine: 5h and 36min).
Average sunshine days in May
Wahiawa, HI
- Average sunshine days in May: 5.2 days
The month with the most sunshine days is January (10.8 days).
The month with the least sunshine days is August (3.3 days).
Average UV index in May
Wahiawa, HI
- Average UV index in May: 6
The months with the highest UV index are March, April, May, June, July, August, September, October and November (UV index 6).
The months with the lowest UV index are January, February and December (UV index 5).
Average cloud cover in May
Wahiawa, HI
- Average cloud cover in May: 49
The month with the most cloud cover is June (Cloud cover 52).
The month with the least cloud cover is January (Cloud cover 43).
Average visibility in May
Wahiawa, HI
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
