April weather forecast
Hanalei, HI

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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

The weather in April holds a unique place in Hanalei's calendar as it fuses the onset of spring with the prelude to summer. The weather pattern from March continues, albeit with diminished rainfall levels. Headlining the month is the significant increase in daylight hours, up to 12.7, paving the way for more sun-soaked days. Besides elongated daylight hours, the rise in both land and sea temperatures promises a pre-summer warmth before the arrival of the hot May.

Temperature

April's onset records an average high-temperature of a moderately hot 74.8°F (23.8°C), a near match to March's 73.2°F (22.9°C). Hanalei records a negligible downturn from daytime temperatures, averaging a low of 70.9°F (21.6°C) in the month of April.

Humidity

In April, the average relative humidity in Hanalei 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: Factoring in a person's dislike for cold, combined with conditions like sunshine, wind, and temperature, a dip in 75.2°F (24°C) waters might be satisfying. (It is worth noting that the Olympic swimming waters are maintained between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In Hanalei, the average length of the day in April is 12h and 41min.
On the first day of April, sunrise is at 6:29 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:04 pm HST.

Sunshine

In April, the average sunshine is 7.8h.

UV index

The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In April, a daily UV index of 6 turns into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.

Frequently asked questions

What is the average April temperature?

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

What is the average humidity in April in Hanalei?

In April, the average relative humidity is 76%.

What is the driest month in Hanalei?

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

How much does it rain in April?

In April, the rain falls for 18.3 days. Throughout April, 1.3" (33mm) of precipitation is accumulated.

What are the months with the coldest ocean?

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

What is the ocean temperature in April?

In Hanalei, the average seawater temperature in April is 75.2°F (24°C). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 75.2°F (24°C) water may be enjoyable.

How many hours of daylight does Hanalei have in April?

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

What time are sunrise and sunset in April?

On the first day of April in Hanalei, Hawaii, sunrise is at 6:29 am and sunset at 6:53 pm. On the last day of the month, sunrise is at 6:05 am and sunset at 7:04 pm HST.

How many hours of sunshine does Hanalei have in April?

In April, the average sunshine duration is 7.8h.

What is the month with the lowest UV index?

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

What is the UV index intensity in April?

In Hanalei, the average daily maximum UV index in April is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from 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
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).

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).

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).

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%).

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").

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).

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).

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 4min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).

  • Average sunshine in April: 7h and 5min

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).

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).

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).

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).

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).

Hanalei, Hawaii, USA

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