May weather forecast
Waimanalo Beach, HI

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Weather in May

May, the last month of the spring in Waimanalo Beach, is another warm month, with an average temperature fluctuating between 74.1°F (23.4°C) and 77.7°F (25.4°C).

Temperature

Waimanalo Beach's weather, upon May's arrival, documents an average high-temperature of a still moderately hot 77.7°F (25.4°C), nearly identical to the prior month. Waimanalo Beach, during the May nights, maintains an average temperature of 74.1°F (23.4°C), closely aligned with its daytime readings.

Humidity

In Waimanalo Beach, the average relative humidity in May is 75%.

Rainfall

In Waimanalo Beach, in May, during 15.8 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Waimanalo Beach, during the entire year, the rain falls for 169.9 days and collects up to 13.15" (334mm) of precipitation.

Ocean temperature

In May, the average ocean temperature in Waimanalo Beach is 77.9°F (25.5°C).
Note: For engaging in any water activities, temperatures from 77°F (25°C) to 84.2°F (29°C) are viewed as outstanding and exceptionally pleasing for prolonged durations.

Daylight

The average length of the day in May is 13h and 10min.
On the first day of the month, sunrise is at 5:59 am and sunset at 6:56 pm. On the last day of May, sunrise is at 5:48 am and sunset at 7:09 pm HST.

Sunshine

In Waimanalo Beach, Hawaii, the average sunshine in May is 10.8h.

UV index

The months with the lowest UV index in Waimanalo Beach are January through June, November and December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In May, the UV index of 6 transforms into the following advice:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Waimanalo Beach in May?

In May, the average high-temperature and low-temperature are 77.7°F (25.4°C) and 74.1°F (23.4°C) respectively.

What is the average humidity in May in Waimanalo Beach?

The average relative humidity in May is 75%.

How much does it rain in Waimanalo Beach in May?

In Waimanalo Beach, Hawaii, during May, the rain falls for 15.8 days and regularly aggregates up to 0.98" (25mm) of precipitation.

How warm is the water in May in Waimanalo Beach?

In Waimanalo Beach, Hawaii, in May, the average water temperature is 77.9°F (25.5°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

How many hours of daylight does Waimanalo Beach have in May?

In May, the average day length in Waimanalo Beach, Hawaii, is 13h and 10min.

What time are sunrise and sunset in May in Waimanalo Beach?

On the first day of May in Waimanalo Beach, sunrise is at 5:59 am and sunset at 6:56 pm. On the last day of the month, sunrise is at 5:48 am and sunset at 7:09 pm HST.

How many hours of sunshine does Waimanalo Beach have in May?

In Waimanalo Beach, the average sunshine duration in May is 10.8h.

What is the month with the lowest UV index in Waimanalo Beach?

The months with the lowest UV index in Waimanalo Beach, Hawaii, are January through June, November and December, with an average maximum UV index of 6.

What is the UV index intensity in May in Waimanalo Beach?

In Waimanalo Beach, the average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.

Average temperature in May
Waimanalo Beach, HI

Average temperature in May - Waimanalo Beach, HI
  • Average high temperature in May: 77.7°F

The warmest month (with the highest average high temperature) is September (80.6°F).
The month with the lowest average high temperature is February (74.5°F).

  • Average low temperature in May: 74.1°F

The months with the highest average low temperature are September and October (77°F).
The coldest month (with the lowest average low temperature) is February (70.5°F).

Average pressure in May
Waimanalo Beach, HI

Average pressure in May - Waimanalo Beach, 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
Waimanalo Beach, HI

Average wind speed in May - Waimanalo Beach, HI
  • Average wind speed in May: 11.6mph

The windiest month (with the highest average wind speed) is July (14.1mph).
The calmest month (with the lowest average wind speed) is January (10.7mph).

Average humidity in May
Waimanalo Beach, HI

Average humidity in May - Waimanalo Beach, HI
  • Average humidity in May: 75%

The months with the highest relative humidity are April, June, July, August and December (76%).
The months with the lowest relative humidity are January and November (74%).

Average rainfall in May
Waimanalo Beach, HI

Average rainfall in May - Waimanalo Beach, HI
  • Average rainfall in May: 0.98"

The wettest month (with the highest rainfall) is March (1.69").
The driest month (with the least rainfall) is July (0.55").

Average rainfall days in May
Waimanalo Beach, HI

Average rainfall days in May - Waimanalo Beach, HI
  • Average rainfall days in May: 15.8 days

The month with the highest number of rainy days is March (16.9 days).
The month with the least rainy days is June (11.3 days).

Average sea temperature in May
Waimanalo Beach, HI

Average sea temperature in May - Waimanalo Beach, HI
  • Average sea temperature in May: 78°F

The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

Average daylight in May /
Average sunshine in May
Waimanalo Beach, HI

Average daylight in May / Average sunshine in May - Waimanalo Beach, 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 month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in May
Waimanalo Beach, HI

Average sunshine days in May - Waimanalo Beach, HI
  • Average sunshine days in May: 9.3 days

The month with the most sunshine days is June (13.6 days).
The months with the least sunshine days are March and November (6.6 days).

Average UV index in May
Waimanalo Beach, HI

Average UV index in May - Waimanalo Beach, HI
  • Average UV index in May: 6

The months with the highest UV index are July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 6).

Average cloud cover in May
Waimanalo Beach, HI

Average cloud cover in May - Waimanalo Beach, HI
  • Average cloud cover in May: 29

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 27).

Average visibility in May
Waimanalo Beach, HI

Average visibility in May - Waimanalo Beach, 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).

Waimanalo Beach, Hawaii, USA

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