April weather forecast
Wailuku, HI

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Weather in April

April in Wailuku brings a reduction in rainfall, contributing to a warm and relatively dry month. The average rainfall notably decreases, measuring just 0.63" (16mm) over roughly 8.1 days, providing an opportunity to enjoy outdoor activities. The slight increase in temperature than in earlier months signals the beginning of the dry season. April days in Wailuku are filled with longer sunshine hours, making it the ideal month for outdoor exploration and beach activities.

Temperature

April experiences an average high-temperature of a still warm 75.6°F (24.2°C), barely different from March's 74.3°F (23.5°C). Wailuku notes an average temperature descent to an agreeable 72.1°F (22.3°C) in April, a small shift from its daytime peak.

Humidity

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

Rainfall

In April, in Wailuku, the rain falls for 8.1 days. Throughout April, 0.63" (16mm) of precipitation is accumulated. In Wailuku, 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 Wailuku, Hawaii, the average sunshine in April is 9.2h.

UV index

The months with the lowest UV index in Wailuku are January through June, November and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: In April, a daily maximum UV index of 6 leads to the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Wailuku in April?

April temperatures in Wailuku, Hawaii, vary between a high-temperature of 75.6°F (24.2°C) and a low-temperature of 72.1°F (22.3°C).

What is the average humidity in April in Wailuku?

The average relative humidity in April in Wailuku is 75%.

How much does it rain in Wailuku 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 in Wailuku?

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

When are sunrise and sunset in April in Wailuku?

On the first day of April in Wailuku, 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 Wailuku?

The average sunshine duration in April is 9.2h.

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

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

How high is the UV index in April in Wailuku?

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

Average temperature in April - Wailuku, 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
Wailuku, HI

Average pressure in April - Wailuku, 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
Wailuku, HI

Average wind speed in April - Wailuku, 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
Wailuku, HI

Average humidity in April - Wailuku, 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
Wailuku, HI

Average rainfall in April - Wailuku, 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
Wailuku, HI

Average rainfall days in April - Wailuku, 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
Wailuku, HI

Average daylight in April / Average sunshine in April - Wailuku, 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
Wailuku, HI

Average sunshine days in April - Wailuku, 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
Wailuku, HI

Average UV index in April - Wailuku, 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
Wailuku, HI

Average cloud cover in April - Wailuku, 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
Wailuku, HI

Average visibility in April - Wailuku, 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).

Wailuku, Hawaii, USA

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