May weather forecastMaunaloa, HI
May
Weather in May
By May, Maunaloa enters a dryer phase as rainfall further lowers to 0.71" (18mm). The sun becomes more generous with its light, allowing for extensive daylight hours. The trade winds maintain a solid presence, adding a refreshing breeze to the warm sunbath. Changes in pressure remain negligible, resulting in steady weather conditions across the board. Night skies maintain their clarity, thanks to the moderate cloud cover that persists throughout the month.Temperature
With the advent of May, Maunaloa's high-temperatures adjust to a still warm 77°F (25°C), closely aligning with the preceding month. May nights experience a minor temperature downturn to a still moderately hot 74.3°F (23.5°C).Humidity
The months with the highest humidity are April through August, with an average relative humidity of 76%.Rainfall
In May, the rain falls for 11.2 days. Throughout May, 0.71" (18mm) of precipitation is accumulated. In Maunaloa, during the entire year, the rain falls for 126.4 days and collects up to 9.84" (250mm) of precipitation.Ocean temperature
In May, the average ocean temperature is 77°F (25°C).Note: In any water activity, temperatures between 77°F (25°C) and 84.2°F (29°C) are viewed as magnificent and exceptionally pleasant for prolonged enjoyment.
Daylight
The average length of the day in May is 13h and 9min.On the first day of the month, sunrise is at 5:57 am and sunset at 6:54 pm. On the last day of May, sunrise is at 5:46 am and sunset at 7:06 pm HST.
Sunshine
In May, the average sunshine in Maunaloa is 11.2h.UV index
The months with the lowest UV index are January through May, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During May, 6 as the daily maximum UV index converts into the following advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Be mindful! Sand and water reflections can up the Sun's UV exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Maunaloa, HI
- Average high temperature in May: 77°F
The warmest months (with the highest average high temperature) are August and September (80.2°F).
The month with the lowest average high temperature is February (74.3°F).
- Average low temperature in May: 74.3°F
The months with the highest average low temperature are September and October (77.2°F).
The coldest month (with the lowest average low temperature) is March (71.2°F).
Average pressure in May
Maunaloa, HI
- Average pressure in May: 30.04"Hg
The months with the highest atmospheric pressure are March and April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in May
Maunaloa, HI
- Average wind speed in May: 11.6mph
The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.8mph).
Average humidity in May
Maunaloa, HI
- Average humidity in May: 76%
The months with the highest relative humidity are April, May, June, July and August (76%).
The months with the lowest relative humidity are January and November (74%).
Average rainfall in May
Maunaloa, HI
- Average rainfall in May: 0.71"
The wettest month (with the highest rainfall) is March (1.3").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in May
Maunaloa, HI
- Average rainfall days in May: 11.2 days
The month with the highest number of rainy days is March (13.2 days).
The month with the least rainy days is July (8.5 days).
Average sea temperature in May
Maunaloa, HI
- Average sea temperature in May: 77°F
The best months for swimming (with the highest average sea temperature) are September and October (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).
Average daylight in May /
Average sunshine in May
Maunaloa, 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 54min).
- Average sunshine in May: 11h and 12min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in May
Maunaloa, HI
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is July (16.1 days).
The month with the least sunshine days is November (10.8 days).
Average UV index in May
Maunaloa, HI
- Average UV index in May: 6
The months with the highest UV index are June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, November and December (UV index 6).
Average cloud cover in May
Maunaloa, HI
- Average cloud cover in May: 26
The months with the most cloud cover are February and March (Cloud cover 30).
The month with the least cloud cover is September (Cloud cover 23).
Average visibility in May
Maunaloa, 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).
