May weather forecastCaptain Cook, HI
May
Weather in May
The last month of the spring, May, is another pleasant month in Captain Cook, Hawaii, with an average temperature varying between 71.1°F (21.7°C) and 66.7°F (19.3°C).Temperature
As April turns into May, the average high-temperatures rest at a still agreeable 71.1°F (21.7°C), showing a minor variation from the prior month. Nights in May cool down in Captain Cook, indicating a minor disparity from daytime highs with an average low-temperature of 66.7°F (19.3°C).Humidity
In Captain Cook, the average relative humidity in May is 80%.Rainfall
In Captain Cook, in May, during 21.1 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, there are 216.1 rainfall days, and 16.57" (421mm) of precipitation is accumulated.Daylight
In Captain Cook, the average length of the day in May is 13h and 4min.On the first day of May, sunrise is at 5:54 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 6:58 pm HST.
Sunshine
The month with the most sunshine is May, with an average of 10.7h of sunshine.UV index
May through October, 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 exposure to the Sun's UV rays for the average person.Note: In May, the UV index of 6 transforms into the following advice:
Shield from overexposure. Defense against sun-related harm is required. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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: 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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
Captain Cook, 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).
