Monthly weather forecast and climate
Hanalei, HI

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

What is the coldest month in Hanalei?

January through March, with an average high-temperature of 77°F (25°C), are the coldest months in Hanalei.

How many days does it rain in Hanalei?

In Hanalei, during the entire year, the rain falls for 195 days and collects up to 101.1" (2567mm) of precipitation.

When is the ocean coldest in Hanalei?

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater in Hanalei, Hawaii. 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 driest month in Hanalei?

June is the month with the least rainfall. Rain falls for 15 days and accumulates 4.4" (113mm) of precipitation.

What are the warmest months in Hanalei?

July through September, with an average high-temperature of 84.2°F (29°C), are warmest months in Hanalei.

What are the months with the highest UV index in Hanalei?

Months with the highest UV index in Hanalei are July and August, with an average UV index of 12.

What are the months with the warmest ocean in Hanalei?

September and October, with an average ocean temperature of 80.6°F (27°C), are months with the warmest seawater. For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the wettest month in Hanalei?

December is the month with the most rainfall in Hanalei, Hawaii. Rain falls for 16 days and accumulates 11.1" (283mm) of precipitation.

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

With an average UV index of 6, December is the month with the lowest UV index in Hanalei.
Average temperature - Hanalei, HI
Average rainfall - Hanalei, HI
Average rainfall days - Hanalei, HI

Months with the highest number of rainy days are April, July, October and November (18 days).
The month with the lowest number of rainy days is February (13 days).

Average sea temperature - Hanalei, HI

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

Average daylight / Average sunshine - Hanalei, HI
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