April weather forecastKaunakakai, HI

April

Weather in April

April ushers in a decrease in both rainfall and precipitation days in Kaunakakai, Hawaii. On average, rainfall totals to 0.83" (21mm) and the number of rainy days dips to 10.4. This change signifies the onset of the "dry season" in Hawaii, with less rainfall and a concentration of sunny days. April's weather facilitates outdoor activities, boasting copious sunshine hours coupled with warm weather. Although it is the start of a drier season, the geography contributes to a vibrant ambiance due to the slightly increased temperatures.

Temperature

The initiation of April in Kaunakakai sees an average high-temperature of a still moderately hot 75.9°F (24.4°C), showing minor variations from the previous month. Kaunakakai maintains a consistent average nighttime low-temperature of 72.7°F (22.6°C) throughout April.

Humidity

The months with the highest humidity are April through August, with an average relative humidity of 76%.

Rainfall

In April, the rain falls for 10.4 days. Throughout April, 0.83" (21mm) of precipitation is accumulated. Throughout the year, in Kaunakakai, there are 126.4 rainfall days, and 9.84" (250mm) of precipitation is accumulated.

Ocean temperature

In Kaunakakai, in April, the average water temperature is 76.6°F (24.8°C).
Note: 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. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

The average length of the day in April is 12h and 39min.
On the first day of April in Kaunakakai, sunrise is at 6:20 am and sunset at 6:43 pm. On the last day of the month, sunrise is at 5:57 am and sunset at 6:52 pm HST.

Sunshine

In April, the average sunshine in Kaunakakai, Hawaii, is 9.1h.

UV index

January through May, November and December, with an average maximum UV index of 6, are months with the lowest UV index. 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 regular UV index of 6 translates into these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in April, in Kaunakakai, is 75.9°F (24.4°C), while the low-temperature averages to 72.7°F (22.6°C).

April through August, with an average relative humidity of 76%, are most humid months in Kaunakakai, Hawaii.

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

In Kaunakakai, Hawaii, in April, during 10.4 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

In April, the average ocean temperature in Kaunakakai, Hawaii, is 76.6°F (24.8°C). 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.

The average day length in April in Kaunakakai, Hawaii, is 12h and 39min.

In April, on the first day of the month, sunrise is at 6:20 am and sunset at 6:43 pm. On the last day of the month, in Kaunakakai, sunrise is at 5:57 am and sunset at 6:52 pm HST.

The average sunshine duration in April is 9.1h.

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

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

Today

Tomorrow

Long-term

Year J F M April M J J A S O N D

Mar

April

May

Average high temperature

74.5°F

75.9°F

77°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

13.5mph

12.9mph

12.1mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

13.2

10.4

11.2

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

12.2

12.6

13.3

Average UV index

Average cloud cover

Average visibility

Average temperature in April
Kaunakakai, HI

Average high temperature in April: 75.9°F

The warmest months (with the highest average high temperature) are August and September (80.2°F).
The month with the lowest average high temperature is February (74.3°F).

Average low temperature in April: 72.7°F

The months with the highest average low temperature are September and October (77.2°F).
The coldest month (with the lowest average low temperature) is March (71.2°F).

Average pressure in April
Kaunakakai, HI

Average pressure in April: 30.05"Hg

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

Average wind speed in April
Kaunakakai, HI

Average wind speed in April: 12.4mph

The windiest month (with the highest average wind speed) is July (13.9mph).
The calmest month (with the lowest average wind speed) is January (10.8mph).

Average humidity in April
Kaunakakai, HI

Average humidity in April: 76%

The months with the highest relative humidity are April, May, June, July and August (76%).
The months with the lowest relative humidity are January and November (74%).

Average rainfall in April
Kaunakakai, HI

Average rainfall in April: 0.83"

The wettest month (with the highest rainfall) is March (1.3").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in April
Kaunakakai, HI

Average rainfall days in April: 10.4 days

The month with the highest number of rainy days is March (13.2 days).
The month with the least rainy days is July (8.5 days).

Average sea temperature in April
Kaunakakai, HI

Average sea temperature in April: 76.7°F

The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (75.6°F).

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

Average daylight in April: 12h and 42min

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 6min

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

Average sunshine days in April
Kaunakakai, HI

Average sunshine days in April: 12.6 days

The month with the most sunshine days is July (16.1 days).
The month with the least sunshine days is November (10.8 days).

Average UV index in April
Kaunakakai, HI

Average UV index in April: 6

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

Average cloud cover in April
Kaunakakai, HI

Average cloud cover in April: 28

The months with the most cloud cover are February and March (Cloud cover 30).
The month with the least cloud cover is September (Cloud cover 23).

Average visibility in April
Kaunakakai, 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).