April weather forecast
Kahului, HI

Weather in April

April, like March, in Kahului, Hawaii, is a moderately hot spring month, with an average temperature ranging between min 72.1°F (22.3°C) and max 75.6°F (24.2°C).

Temperature

In April, the average high-temperature is relatively the same as in March - a still warm 75.6°F (24.2°C). In Kahului, in April, the average low-temperature is 72.1°F (22.3°C).

Humidity

The average relative humidity in April is 75%.

Rainfall

In Kahului, during 8.1 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Kahului, during the entire year, the rain falls for 103.4 days and collects up to 6.57" (167mm) of precipitation.

Ocean temperature

In April, the average ocean temperature is 76.6°F (24.8°C).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 76.6°F (24.8°C) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 77°F (25°C) to 82.4°F (28°C).)

Daylight

In Kahului, the average length of the day in April is 12h and 38min.
On the first day of April, sunrise is at 6:18 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 6:50 pm HST.

Sunshine

In April, the average sunshine is 9.2h.

UV index

The months with the lowest UV index in Kahului, Hawaii, 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 risk from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 in April transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in April in Kahului?

In Kahului, Hawaii, the average relative humidity in April is 75%.

How many days does it rain in April in Kahului?

In April, in Kahului, the rain falls for 8.1 days. Throughout April, 0.63" (16mm) of precipitation is accumulated.

What is the ocean temperature in April in Kahului?

In Kahului, in April, the average water temperature is 76.6°F (24.8°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.6°F (24.8°C) water.

How many hours of daylight does Kahului have in April?

In April, the average day length in Kahului is 12h and 38min.

What time are sunrise and sunset in April in Kahului?

On the first day of April in Kahului, Hawaii, sunrise is at 6:18 am and sunset at 6:40 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 6:50 pm HST.

How long on average sun shines in April in Kahului?

The average sunshine duration in April in Kahului is 9.2h.

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

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

What is the UV index intensity in April in Kahului?

In Kahului, Hawaii, the average daily maximum UV index in April is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to Sun's UV rays.

Average temperature in April
Kahului, HI

Average temperature in April - Kahului, HI
  • Average high temperature in April: 75.6°F

The warmest month (with the highest average high temperature) is September (79.9°F).
The month with the lowest average high temperature is February (73.9°F).

  • Average low temperature in April: 72.1°F

The month with the highest average low temperature is October (76.5°F).
The coldest months (with the lowest average low temperature) are February and March (70.7°F).

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Average pressure in April
Kahului, HI

Average pressure in April - Kahului, HI
  • Average pressure in April: 30.05"Hg

The month with the highest atmospheric pressure is April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).

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Average wind speed in April
Kahului, HI

Average wind speed in April - Kahului, HI
  • Average wind speed in April: 12.6mph

The windiest month (with the highest average wind speed) is June (13.6mph).
The calmest month (with the lowest average wind speed) is January (10.4mph).

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Average humidity in April
Kahului, HI

Average humidity in April - Kahului, HI
  • Average humidity in April: 75%

The months with the highest relative humidity are July and August (76%).
The months with the lowest relative humidity are January and February (74%).

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Average rainfall in April
Kahului, HI

Average rainfall in April - Kahului, HI
  • Average rainfall in April: 0.63"

The wettest months (with the highest rainfall) are March and December (0.87").
The driest month (with the least rainfall) is June (0.2").

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Average rainfall days in April
Kahului, HI

Average rainfall days in April - Kahului, HI
  • Average rainfall days in April: 8.1 days

The month with the highest number of rainy days is March (11.9 days).
The month with the least rainy days is June (6.6 days).

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Average sea temperature in April
Kahului, HI

Average sea temperature in April - Kahului, HI
  • Average sea temperature in April: 76.6°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 (75.6°F).

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

Average daylight in April / Average sunshine in April - Kahului, HI
  • Average daylight in April: 12h and 38min

The month with the longest days is June (Average daylight: 13h and 23min).
The month with the shortest days is December (Average daylight: 10h and 53min).

  • Average sunshine in April: 9h and 12min

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in April
Kahului, HI

Average sunshine days in April - Kahului, HI
  • Average sunshine days in April: 17.5 days

The month with the most sunshine days is June (19.9 days).
The month with the least sunshine days is March (15.2 days).

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Average UV index in April
Kahului, HI

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

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Average cloud cover in April
Kahului, HI

Average cloud cover in April - Kahului, HI
  • Average cloud cover in April: 27

The month with the most cloud cover is March (Cloud cover 30).
The months with the least cloud cover are June and September (Cloud cover 21).

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Average visibility in April
Kahului, HI

Average visibility in April - Kahului, 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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