April weather forecast
Waikapu, HI

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Weather in April

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

Temperature

Waikapu, Hawaii, observes an average high-temperature of a still moderately hot 75.6°F (24.2°C) in April, barely different from 74.3°F (23.5°C) in March. Waikapu in April experiences a minor decline in temperature, with an average low of 72.1°F (22.3°C) at night.

Humidity

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

Rainfall

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

Daylight

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

Sunshine

In April, the average sunshine is 9.2h.

UV index

January through June, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In April, a daily UV index of 6 turns into the following recommendations:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. 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 minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average April temperature?

In April, in Waikapu, the average high-temperature is 75.6°F (24.2°C), and the average low-temperature is 72.1°F (22.3°C).

What is the average humidity in April?

In April, the average relative humidity is 75%.

How much does it rain in April?

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

What is the average length of the day in April?

The average day length in April is 12h and 38min.

When are sunrise and sunset in April?

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.

How long on average sun shines in April?

In April, the average sunshine duration is 9.2h.

What are the months with the lowest UV index?

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

What is the UV index reading in April?

In Waikapu, the average daily maximum UV index in April is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Waikapu, HI

Average temperature in April - Waikapu, 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).

Average pressure in April
Waikapu, HI

Average pressure in April - Waikapu, 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).

Average wind speed in April
Waikapu, HI

Average wind speed in April - Waikapu, 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).

Average humidity in April
Waikapu, HI

Average humidity in April - Waikapu, 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%).

Average rainfall in April
Waikapu, HI

Average rainfall in April - Waikapu, 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").

Average rainfall days in April
Waikapu, HI

Average rainfall days in April - Waikapu, 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).

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

Average daylight in April / Average sunshine in April - Waikapu, 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: 9h and 1min

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).

Average sunshine days in April
Waikapu, HI

Average sunshine days in April - Waikapu, 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).

Average UV index in April
Waikapu, HI

Average UV index in April - Waikapu, 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).

Average cloud cover in April
Waikapu, HI

Average cloud cover in April - Waikapu, 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).

Average visibility in April
Waikapu, HI

Average visibility in April - Waikapu, 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).

Waikapu, Hawaii, USA

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