Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The advent of May reveals an average high-temperature of a still warm 75.4°F (24.1°C), showing minimal difference from the prior month. In Haiku, the nighttime temperature shows a slight difference from the daytime high, averaging to an agreeable 72.7°F (22.6°C) during May.Humidity
The average relative humidity in May in Haiku, Hawaii, is 77%.Rainfall
In Haiku, in May, during 12.3 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Haiku, during the entire year, the rain falls for 136.7 days and collects up to 13.94" (354mm) of precipitation.Snowfall
In Haiku, snow does not fall in January through August, October through December.Daylight
In Haiku, Hawaii, the average length of the day in May is 13h and 8min.On the first day of the month, sunrise is at 5:54 am and sunset at 6:50 pm. On the last day of May, sunrise is at 5:43 am and sunset at 7:02 pm HST.
Sunshine
In Haiku, the average sunshine in May is 10.8h.UV index
January through August, October through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In May, the average maximum UV index of 6 translates into the following recommendations:
Resist extreme sun exposure. Guarding against solar damage is essential. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
What is the temperature in May in Haiku?
What is the average humidity in May in Haiku?
How many days does it rain in May in Haiku?
When it does not snow in Haiku?
How many hours of daylight does Haiku have in May?
When is the sunrise / sunset in May in Haiku?
How long on average sun shines in May in Haiku?
What is the month with the lowest UV index in Haiku?
How high is the UV index in May in Haiku?
Average temperature in May
Haiku, HI
- Average high temperature in May: 75.4°F
The warmest month (with the highest average high temperature) is September (79°F).
The month with the lowest average high temperature is March (72.9°F).
- Average low temperature in May: 72.7°F
The month with the highest average low temperature is September (76.1°F).
The coldest month (with the lowest average low temperature) is March (69.8°F).
Average pressure in May
Haiku, 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
Haiku, HI
- Average wind speed in May: 12.6mph
The windiest month (with the highest average wind speed) is June (14.4mph).
The calmest month (with the lowest average wind speed) is January (10.9mph).
Average humidity in May
Haiku, HI
- Average humidity in May: 77%
The months with the highest relative humidity are July and August (78%).
The months with the lowest relative humidity are January and February (76%).
Average rainfall in May
Haiku, HI
- Average rainfall in May: 0.94"
The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in May
Haiku, HI
- Average rainfall days in May: 12.3 days
The month with the highest number of rainy days is March (14.1 days).
The month with the least rainy days is September (8.1 days).
Average snowfall days in May
Haiku, HI
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in May /
Average sunshine in May
Haiku, HI
- Average daylight in May: 13h and 1min
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: 10h and 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in May
Haiku, HI
- Average sunshine days in May: 13.4 days
The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is November (11.2 days).
Average UV index in May
Haiku, HI
- Average UV index in May: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in May
Haiku, HI
- Average cloud cover in May: 28
The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is September (Cloud cover 23).
Average visibility in May
Haiku, 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).
Haiku, Hawaii, USA
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