April weather forecast
Waimalu, HI

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Weather in April

April carries forward the essence of the Hawaiian climate to Waimalu, boasting of a subtle dip in the rainfall to 1.22" (31mm). This period encounters escalating average temperatures that blend aptly with the city's relaxed coastal vibe. Notably, the city basks under the sun for an extended period of 12.7 hours per day, allowing enough daylight for outdoor activities. Impressively, the wind speed shows minimal fluctuation, close to 10.4mph (16.7km/h). As Waimalu steps into April, the weather seamlessly moderates between warm and wet, creating a pleasant outdoor climate.

Temperature

The advent of April sees the average high-temperature at a still warm 76.8°F (24.9°C), subtly shifted from March's 75.4°F (24.1°C). During April, nights cool slightly to an average low of 70.7°F (21.5°C).

Humidity

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

Rainfall

In Waimalu, Hawaii, during April, the rain falls for 18.6 days and regularly aggregates up to 1.22" (31mm) of precipitation. In Waimalu, Hawaii, during the entire year, the rain falls for 208.4 days and collects up to 16.5" (419mm) of precipitation.

Ocean temperature

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater.
Note: Factoring in a person's dislike for cold, combined with conditions like sunshine, wind, and temperature, a dip in 75.2°F (24°C) waters might be satisfying. (It is worth noting that the Olympic swimming waters are maintained between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In April, the average length of the day is 12h and 40min.
On the first day of April in Waimalu, sunrise is at 6:23 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 6:57 pm HST.

Sunshine

The average sunshine in April is 7.8h.

UV index

The months with the lowest UV index 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 threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: An average UV index of 6 in April transforms into this advice:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Warning! Sand and water reflections boost the intensity of UV exposure.
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Frequently asked questions

What is the temperature in April in Waimalu?

In Waimalu, 76.8°F (24.9°C) is the average high-temperature and 70.7°F (21.5°C) is the average low-temperature during April.

What are the least humid months in Waimalu?

The months with the lowest humidity in Waimalu are April through June and September, with an average relative humidity of 74%.

What is the average humidity in April in Waimalu?

In Waimalu, Hawaii, the average relative humidity in April is 74%.

How much does it rain in Waimalu in April?

In Waimalu, in April, during 18.6 rainfall days, 1.22" (31mm) of precipitation is typically accumulated.

What months are the ocean coldest in Waimalu?

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater in Waimalu, Hawaii.

How warm is the water in April in Waimalu?

In April, the average ocean temperature is 75.2°F (24°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.2°F (24°C).

What is the average length of the day in April in Waimalu?

The average day length in April in Waimalu, Hawaii, is 12h and 40min.

When are sunrise and sunset in April in Waimalu?

On the first day of April in Waimalu, sunrise is at 6:23 am and sunset at 6:46 pm. On the last day of the month, sunrise is at 6:00 am and sunset at 6:57 pm HST.

How many hours of sunshine does Waimalu have in April?

In Waimalu, the average sunshine duration in April is 7.8h.

What is the month with the lowest UV index in Waimalu?

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

What is the UV index intensity in April in Waimalu?

The average daily maximum UV index in April in Waimalu is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Waimalu, HI

Average temperature in April - Waimalu, HI
  • Average high temperature in April: 76.8°F

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

  • Average low temperature in April: 70.7°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).

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Average pressure in April
Waimalu, HI

Average pressure in April - Waimalu, HI
  • Average pressure in April: 30.06"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).

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Average wind speed in April
Waimalu, HI

Average wind speed in April - Waimalu, HI
  • Average wind speed in April: 10.4mph

The windiest month (with the highest average wind speed) is July (11.3mph).
The calmest month (with the lowest average wind speed) is January (8.4mph).

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Average humidity in April
Waimalu, HI

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

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

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Average rainfall in April
Waimalu, HI

Average rainfall in April - Waimalu, HI
  • Average rainfall in April: 1.22"

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

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Average rainfall days in April
Waimalu, HI

Average rainfall days in April - Waimalu, HI
  • Average rainfall days in April: 18.6 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).

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Average sea temperature in April
Waimalu, HI

Average sea temperature in April - Waimalu, HI
  • Average sea temperature in April: 75°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).

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Average daylight in April /
Average sunshine in April
Waimalu, HI

Average daylight in April / Average sunshine in April - Waimalu, HI
  • Average daylight in April: 12h and 4min

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 April: 7h and 5min

The month with the most sunshine is June (Average sunshine: 9h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).

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Average sunshine days in April
Waimalu, HI

Average sunshine days in April - Waimalu, HI
  • Average sunshine days in April: 7.7 days

The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is November (6.2 days).

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Average UV index in April
Waimalu, HI

Average UV index in April - Waimalu, HI
  • Average UV index in April: 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).

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Average cloud cover in April
Waimalu, HI

Average cloud cover in April - Waimalu, HI
  • Average cloud cover in April: 43

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 36).

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Average visibility in April
Waimalu, HI

Average visibility in April - Waimalu, HI
  • Average visibility in April: 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).

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Waimalu, Hawaii, USA

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