April weather forecast
Hanalei, HI

The vast Taro farm fields in the valley of Hanalei, Hawaii, with beautiful cloudy skies and mountains
The vast Taro farm fields in the valley of Hanalei, Hawaii, with beautiful cloudy skies and mountains

Weather in April

April is a warm spring month in Hanalei, Hawaii, with temperature in the range of an average low of 70.9°F (21.6°C) and an average high of 74.8°F (23.8°C).

Temperature

In April, the average high-temperature is almost the same as in March - a moderately hot 74.8°F (23.8°C). The average low-temperature, in April, is 70.9°F (21.6°C).

Humidity

In April, the average relative humidity is 76%.

Rainfall

April is the month with the least rainfall. Rain falls for 18.3 days and accumulates 1.3" (33mm) of precipitation.

Ocean temperature

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater.
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 75.2°F (24°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 in Hanalei is 12h and 41min.
On the first day of the month, sunrise is at 6:30 am and sunset at 6:53 pm. On the last day of April, in Hanalei, sunrise is at 6:06 am and sunset at 7:03 pm HST.

Sunshine

In April, the average sunshine in Hanalei, Hawaii, is 7.8h.

UV index

The months with the lowest UV index in Hanalei are January through August, October through December, with an average maximum UV index of 6. 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: The daily maximum UV index of 6 in April interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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 reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the temperature in April in Hanalei?

In Hanalei, in April, the average high-temperature is 74.8°F (23.8°C), and the average low-temperature is 70.9°F (21.6°C).

What is the average humidity in April in Hanalei?

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

What is the driest month in Hanalei?

April is the month with the least rainfall in Hanalei. Rain falls for 18.3 days and accumulates 1.3" (33mm) of precipitation.

How many days does it rain in April in Hanalei?

In Hanalei, during April, the rain falls for 18.3 days and regularly aggregates up to 1.3" (33mm) of precipitation.

What months are the ocean coldest in Hanalei?

The months with the coldest seawater are January through April, with an average ocean temperature of 75.2°F (24°C).

How warm is the water in April in Hanalei?

In April, the average ocean temperature is 75.2°F (24°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 75.2°F (24°C).

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

In Hanalei, Hawaii, the average day length in April is 12h and 41min.

What time are sunrise and sunset in April in Hanalei?

In April, on the first day of the month, sunrise is at 6:30 am and sunset at 6:53 pm. On the last day of the month, in Hanalei, sunrise is at 6:06 am and sunset at 7:03 pm HST.

How long on average sun shines in April in Hanalei?

In Hanalei, the average sunshine duration in April is 7.8h.

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

The months with the lowest UV index in Hanalei are January through August, October through December, with an average maximum UV index of 6.

What is the UV index reading in April in Hanalei?

In April, the average daily maximum UV index in Hanalei, Hawaii, 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Hanalei, HI

Average temperature in April - Hanalei, HI
  • Average high temperature in April: 74.8°F

The warmest month (with the highest average high temperature) is September (79.7°F).
The months with the lowest average high temperature are February and March (73.2°F).

  • Average low temperature in April: 70.9°F

The month with the highest average low temperature is September (75.9°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).

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Average pressure in April
Hanalei, HI

Average pressure in April - Hanalei, HI
  • Average pressure in April: 30.07"Hg

The month with the highest atmospheric pressure is April (30.07"Hg).
The months with the lowest atmospheric pressure are September and October (29.98"Hg).

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Average wind speed in April
Hanalei, HI

Average wind speed in April - Hanalei, HI
  • Average wind speed in April: 11.5mph

The windiest month (with the highest average wind speed) is July (12.3mph).
The calmest month (with the lowest average wind speed) is January (10mph).

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Average humidity in April
Hanalei, HI

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

The months with the highest relative humidity are June, July, August, October and December (77%).
The month with the lowest relative humidity is January (75%).

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Average rainfall in April
Hanalei, HI

Average rainfall in April - Hanalei, HI
  • Average rainfall in April: 1.3"

The wettest month (with the highest rainfall) is March (2.52").
The driest month (with the least rainfall) is April (1.3").

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Average rainfall days in April
Hanalei, HI

Average rainfall days in April - Hanalei, HI
  • Average rainfall days in April: 18.3 days

The month with the highest number of rainy days is August (21.1 days).
The month with the least rainy days is January (12.5 days).

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Average sea temperature in April
Hanalei, HI

Average sea temperature in April - Hanalei, HI
  • Average sea temperature in April: 75°F

The best months for swimming (with the highest average sea temperature) are September and October (81°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).

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

Average daylight in April / Average sunshine in April - Hanalei, HI
  • Average daylight in April: 12h and 41min

The month with the longest days is June (Average daylight: 13h and 28min).
The month with the shortest days is December (Average daylight: 10h and 48min).

  • Average sunshine in April: 7h and 48min

The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).

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Average sunshine days in April
Hanalei, HI

Average sunshine days in April - Hanalei, HI
  • Average sunshine days in April: 5.7 days

The month with the most sunshine days is January (12.8 days).
The month with the least sunshine days is August (2.9 days).

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Average UV index in April
Hanalei, HI

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

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

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Average cloud cover in April
Hanalei, HI

Average cloud cover in April - Hanalei, HI
  • Average cloud cover in April: 46

The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are January and September (Cloud cover 38).

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Average visibility in April
Hanalei, HI

Average visibility in April - Hanalei, 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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