May weather forecastKawaihae, HI
May
Weather in May
May bears witness to a slight hike in temperatures in Kawaihae, with a low of 55.9°F (13.3°C) and a high of 64.2°F (17.9°C). It also brings an abundant sunshine of 9.5 hours contributing to longer, bright days. While the sea temperatures climb a notch up to 77.3°F (25.2°C), perfect for a dip in the ocean. The month experiences decreased rain compared to April with only 2.32" (59mm) recorded. In essence, May serves as the ideal prelude to summer with sufficient opportunities for outdoor activities.Temperature
May brings an average high-temperature of a still refreshing 64.2°F (17.9°C), showing a slight difference from April's 63°F (17.2°C). The May nights in Kawaihae show a slight decrease to a mean low-temperature of 55.9°F (13.3°C).Humidity
The average relative humidity in May is 82%.Rainfall
In May, the rain falls for 26.5 days. Throughout May, 2.32" (59mm) of precipitation is accumulated. Throughout the year, in Kawaihae, there are 280.8 rainfall days, and 33.9" (861mm) of precipitation is accumulated.Ocean temperature
In Kawaihae, the average seawater temperature in May is 77.4°F (25.2°C).Note: Temperatures between 77°F (25°C) and 84.2°F (29°C) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.
Daylight
In Kawaihae, the average length of the day in May is 13h and 5min.On the first day of May, sunrise is at 5:53 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 5:43 am and sunset at 6:59 pm HST.
Sunshine
In May, the average sunshine is 9.5h.UV index
May through October, with an average maximum UV index of 5, are months with the highest UV index in Kawaihae. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 5 during May translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Boost your sun resistance with garments that are densely woven yet spacious. Watch out! Reflections from sand and water can surge UV radiation exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Kawaihae, HI
- Average high temperature in May: 64.2°F
The warmest month (with the highest average high temperature) is August (67.5°F).
The month with the lowest average high temperature is March (61.9°F).
- Average low temperature in May: 55.9°F
The month with the highest average low temperature is September (59°F).
The coldest month (with the lowest average low temperature) is February (52°F).
Average pressure in May
Kawaihae, HI
- Average pressure in May: 30.03"Hg
The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in May
Kawaihae, HI
- Average wind speed in May: 4.5mph
The windiest months (with the highest average wind speed) are July and August (5.5mph).
The calmest months (with the lowest average wind speed) are January, May and October (4.5mph).
Average humidity in May
Kawaihae, HI
- Average humidity in May: 82%
The months with the highest relative humidity are September and October (84%).
The month with the lowest relative humidity is February (78%).
Average rainfall in May
Kawaihae, HI
- Average rainfall in May: 2.32"
The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is June (1.57").
Average rainfall days in May
Kawaihae, HI
- Average rainfall days in May: 26.5 days
The month with the highest number of rainy days is September (27.3 days).
The month with the least rainy days is January (17.1 days).
Average sea temperature in May
Kawaihae, HI
- Average sea temperature in May: 77.3°F
The best month for swimming (with the highest average sea temperature) is September (79.6°F).
The coldest month (with the lowest average sea temperature) is March (75.8°F).
Average daylight in May /
Average sunshine in May
Kawaihae, HI
- Average daylight in May: 13h and 6min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in May: 9h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in May
Kawaihae, HI
- Average sunshine days in May: 3.3 days
The month with the most sunshine days is January (9.7 days).
The month with the least sunshine days is September (0.8 days).
Average UV index in May
Kawaihae, HI
- Average UV index in May: 5
The months with the highest UV index are May, June, July, August, September and October (UV index 5).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).
Average cloud cover in May
Kawaihae, HI
- Average cloud cover in May: 42
The months with the most cloud cover are April and September (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 29).
Average visibility in May
Kawaihae, 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).
