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 sea temperature 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
With May's advent, Keauhou sees an average high-temperature of a still agreeable 71.1°F (21.7°C), subtly shifted from April's 69.3°F (20.7°C). In Keauhou, the month of May records an average minimum temperature of 66.7°F (19.3°C), a slight dip from the daily highs.Humidity
The average relative humidity in May is 80%.Rainfall
In Keauhou, in May, it is raining for 21.1 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, there are 216.1 rainfall days, and 16.57" (421mm) of precipitation is accumulated.Ocean temperature
In Keauhou, the average seawater temperature in May is 77.5°F (25.3°C).Note: Water temperature from 77°F (25°C) to 84.2°F (29°C) is considered very warm, making water activities enjoyable for prolonged periods without any uncomfortable sensations.
Daylight
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 6:47 pm. On the last day of the month, sunrise is at 5:44 am and sunset at 6:58 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 are May through October, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Alert! The Sun's UV rays are heightened by the reflection of sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How many days does it rain in May?
How warm is the water in May?
What is the average length of the day in May?
What time are sunrise and sunset in May?
What month has the most sunshine?
How long on average sun shines in May?
What are the months with the highest UV index?
What is the UV index intensity in May?
Average temperature in May
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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 sea temperature in May
Keauhou, HI
- Average sea temperature in May: 77.4°F
The best month for swimming (with the highest average sea temperature) is September (80°F).
The coldest month (with the lowest average sea temperature) is March (76°F).
Average daylight in May /
Average sunshine in May
Keauhou, HI
- Average daylight in May: 13h and 1min
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 4min
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
Keauhou, 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
Keauhou, 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
Keauhou, 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
Keauhou, 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).
Keauhou, Hawaii, USA
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