April weather forecast
Kaaawa, HI

Weather in April

April, the same as March, is another warm spring month in Kaaawa, Hawaii, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 71.8°F (22.1°C).

Temperature

In April, the average high-temperature is essentially the same as in March - a still moderately hot 76.5°F (24.7°C). In Kaaawa, the average low-temperature is 71.8°F (22.1°C).

Humidity

Months with the highest humidity in Kaaawa are February through April, July, August, October and December, with an average relative humidity of 76%.

Rainfall

In April, in Kaaawa, the rain falls for 17.9 days. Throughout April, 1.22" (31mm) of precipitation is accumulated. In Kaaawa, during the entire year, the rain falls for 187.1 days and collects up to 15.83" (402mm) of precipitation.

Ocean temperature

In April, the average ocean temperature is 76.5°F (24.7°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.5°F (24.7°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In Kaaawa, Hawaii, the average length of the day is 12.7h.

Sunshine

In Kaaawa, Hawaii, the average sunshine in April is 8.3h.

UV index

Months with the lowest UV index are January through June, 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 unprotected exposure to the Sun's UV rays for the average person.
Note: In April, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the most humid month in Kaaawa?

Months with the highest humidity are February through April, July, August, October and December, with an average relative humidity of 76%.

What is the average humidity in April in Kaaawa?

In April, the average relative humidity in Kaaawa, Hawaii, is 76%.

How much does it rain in Kaaawa in April?

In Kaaawa, Hawaii, during April, the rain falls for 17.9 days and regularly aggregates up to 1.22" (31mm) of precipitation.

How warm is the water in April in Kaaawa?

In Kaaawa, Hawaii, in April, the average water temperature is 76.5°F (24.7°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 76.5°F (24.7°C).

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

In April, the average length of the day in Kaaawa is 12.7h.

How many hours of sunshine does Kaaawa have in April?

The average sunshine in April in Kaaawa is 8.3h.

When is the lowest UV index in Kaaawa?

January through June, October through December, with an average maximum UV index of 6, are months with the lowest UV index.

What is the UV index intensity in April in Kaaawa?

In Kaaawa, the average daily maximum UV index in April is 6. A UV Index estimate of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.

Average temperature in April
Kaaawa, HI

Average temperature in April - Kaaawa, HI
  • Average high temperature in April: 76.5°F

The warmest months (with the highest average high temperature) are August and September (81°F).
The month with the lowest average high temperature is February (74.3°F).

  • Average low temperature in April: 71.8°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is February (69.6°F).

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Average pressure in April
Kaaawa, HI

Average pressure in April - Kaaawa, HI
  • Average pressure in April: 30.06"

The month with the highest atmospheric pressure is April (30.06").
Months with the lowest atmospheric pressure are September and October (29.97").

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Average wind speed in April
Kaaawa, HI

Average wind speed in April - Kaaawa, HI
  • Average wind speed in April: 12.5mph

The windiest month (with the highest average wind speed) is July (13.5mph).
The calmest month (with the lowest average wind speed) is January (10.3mph).

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Average humidity in April
Kaaawa, HI

Average humidity in April - Kaaawa, HI
  • Average humidity in April: 76%

Months with the highest relative humidity are February, March, April, July, August, October and December (76%).
Months with the lowest relative humidity are January, May, June, September and November (75%).

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Average rainfall in April
Kaaawa, HI

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

The wettest month (with the highest rainfall) is March (2.01").
The driest month (with the least rainfall) is July (0.71").

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Average rainfall days in April
Kaaawa, HI

Average rainfall days in April - Kaaawa, HI
  • Average rainfall days in April: 17.9 days

The month with the highest number of rainy days is March (18.3 days).
The month with the least rainy days is June (13.5 days).

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Average sea temperature in April
Kaaawa, HI

Average sea temperature in April - Kaaawa, HI
  • Average sea temperature in April: 76.5°F

The best month for swimming (with the highest average sea temperature) is September (80.1°F).
The coldest month (with the lowest average sea temperature) is March (75°F).

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

Average daylight in April / Average sunshine in April - Kaaawa, HI
  • Average daylight in April: 12.7h

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 April: 8.3h

The month with the most sunshine is June (Average sunshine: 10.7h).
The month with the least sunshine is December (Average sunshine: 6.3h).

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Average sunshine days in April
Kaaawa, HI

Average sunshine days in April - Kaaawa, HI
  • Average sunshine days in April: 6.5 days

The month with the most sunshine days is June (12.2 days).
The month with the least sunshine days is April (6.5 days).

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Average UV index in April
Kaaawa, HI

Average UV index in April - Kaaawa, HI
  • Average UV index in April: 6

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

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Average cloud cover in April
Kaaawa, HI

Average cloud cover in April - Kaaawa, HI
  • Average cloud cover in April: 39

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 32).

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Average visibility in April
Kaaawa, HI

Average visibility in April - Kaaawa, HI
  • Average visibility in April: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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