Waimalu
Hawaii, USA
Long-term weather forecast
Long-term weather forecast

May weather forecast and climate
Waimalu, HI

May, the last month of the spring, in Waimalu, is another warm month, with average temperature ranging between min 72.1°F (22.3°C) and max 78.6°F (25.9°C).

Temperature

In Waimalu, the average high-temperature is essentially the same as in April - a still warm 78.6°F (25.9°C). The average low-temperature, in May, is 72.1°F (22.3°C).

Humidity

Months with the lowest humidity are April through June and September, with an average relative humidity of 74%.

Rainfall

In Waimalu, in May, during 18.4 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In Waimalu, during the entire year, the rain falls for 208.4 days and collects up to 16.5" (419mm) of precipitation.

Ocean temperature

In May, the average ocean temperature in Waimalu is 77°F (25°C).
Note: Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In Waimalu, the average length of the day is 13.2h.

Sunshine

In May, the average sunshine is 9.5h.

UV index

Months with the lowest UV index in Waimalu, Hawaii, are January through August, October through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in May in Waimalu?

In Waimalu, Hawaii, in May, the average high-temperature is 78.6°F (25.9°C), and the average low-temperature is 72.1°F (22.3°C).

What is the least humid month in Waimalu?

April through June and September, with an average relative humidity of 74%, are the least humid months.

What is the average humidity in May in Waimalu?

The average relative humidity in May in Waimalu is 74%.

How much does it rain in Waimalu in May?

In Waimalu, Hawaii, in May, during 18.4 rainfall days, 1.46" (37mm) of precipitation is typically accumulated.

How warm is the water in May in Waimalu?

In Waimalu, the average seawater temperature in May is 77°F (25°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Waimalu have in May?

In Waimalu, Hawaii, the average length of the day in May is 13.2h.

How long on average sun shines in May in Waimalu?

In Waimalu, Hawaii, the average sunshine in May is 9.5h.

What are the months with the lowest UV index in Waimalu?

Months with the lowest UV index in Waimalu are January through August, October through December, with an average maximum UV index of 6.

What is the UV index intensity in May in Waimalu?

The average daily maximum UV index in May in Waimalu is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in May - Waimalu, HI
  • Average high temperature in May: 78.6°F

The warmest months (with the highest average high temperature) are August and September (82°F).
Months with the lowest average high temperature are February and March (75.4°F).

  • Average low temperature in May: 72.1°F

The month with the highest average low temperature is September (75°F).
The coldest month (with the lowest average low temperature) is February (68°F).

Average humidity in May - Waimalu, HI
  • Average humidity in May: 74%

Months with the highest relative humidity are February and December (76%).
Months with the lowest relative humidity are April, May, June and September (74%).

Average rainfall in May - Waimalu, HI
  • Average rainfall in May: 1.46"

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is July (0.71").

Average rainfall days in May - Waimalu, HI
  • Average rainfall days in May: 18.4 days

The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is January (13.5 days).

Average sea temperature in May - Waimalu, HI
  • Average sea temperature in May: 77°F

The best months for swimming (with the highest average sea temperature) are August, September and October (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).

Average daylight in May / Average sunshine in May - Waimalu, HI
  • Average daylight in May: 13.2h

The month with the longest days is June (Average daylight: 13.4h).
The month with the shortest days is December (Average daylight: 10.8h).

  • Average sunshine in May: 9.5h

The month with the most sunshine is June (Average sunshine: 9.9h).
Months with the least sunshine are November and December (Average sunshine: 6.3).

Average UV index in May - Waimalu, HI
  • Average UV index in May: 6

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