May weather forecastPahala, HI
May
Weather in May
May ushers in more sunshine in Pahala, setting the stage for refreshing sunny days with up to 13.1 hours of daylight. While the rainfall amounts see no considerable change from 1.42" (36mm) in April, the number of rain days increases to 21.1. Higher humidity levels at 80% mark the onset of Hawaii's summer, contributing to a warmer feel during this month. The wind maintains a comfortable speed, fostering a congenial environment for a variety of outdoor adventures in May. The rise in temperature with an average high of 71.1°F (21.7°C) offers the perfect settings to soak up some sun.Temperature
Pahala starts May with an average high-temperature of a still pleasant 71.1°F (21.7°C), a minor shift from April's 69.3°F (20.7°C). Pahala maintains an average of approximately an enjoyable 66.7°F (19.3°C) during May nights, with only a minimal decrease from the daytime temperature.Humidity
In Pahala, the average relative humidity in May is 80%.Rainfall
In Pahala, during May, the rain falls for 21.1 days and regularly aggregates up to 1.42" (36mm) of precipitation. In Pahala, during the entire year, the rain falls for 216.1 days and collects up to 16.57" (421mm) of precipitation.Daylight
In Pahala, Hawaii, the average length of the day in May is 13h and 3min.On the first day of the month, sunrise is at 5:53 am and sunset at 6:44 pm. On the last day of May, sunrise is at 5:43 am and sunset at 6:56 pm HST.
Sunshine
With an average of 10.7h of sunshine, May has the most sunshine of the year.UV index
The months with the highest UV index in Pahala are May through October, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 6 in May translates into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Pahala, HI
- Average high temperature in May: 71.1°F
The warmest months (with the highest average high temperature) are August and October (73.2°F).
The month with the lowest average high temperature is February (68.9°F).
- Average low temperature in May: 66.7°F
The month with the highest average low temperature is October (70°F).
The coldest month (with the lowest average low temperature) is March (64.8°F).
Average pressure in May
Pahala, HI
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is April (30.04"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).
Average wind speed in May
Pahala, HI
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity in May
Pahala, HI
- Average humidity in May: 80%
The months with the highest relative humidity are June, July, August and September (81%).
The month with the lowest relative humidity is February (73%).
Average rainfall in May
Pahala, HI
- Average rainfall in May: 1.42"
The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in May
Pahala, HI
- Average rainfall days in May: 21.1 days
The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is January (10.8 days).
Average daylight in May /
Average sunshine in May
Pahala, HI
- Average daylight in May: 13h and 0min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in May: 10h and 42min
The month with the most sunshine is May (Average sunshine: 10h and 42min).
The months with the least sunshine are November and December (Average sunshine: 7h and 18min).
Average sunshine days in May
Pahala, HI
- Average sunshine days in May: 3.2 days
The month with the most sunshine days is January (12.7 days).
The month with the least sunshine days is May (3.2 days).
Average UV index in May
Pahala, HI
- Average UV index in May: 6
The months with the highest UV index are May, June, July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 5).
Average cloud cover in May
Pahala, HI
- Average cloud cover in May: 29
The month with the most cloud cover is June (Cloud cover 31).
The month with the least cloud cover is January (Cloud cover 15).
Average visibility in May
Pahala, 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).





