Climate and monthly 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 January

January, the same as December, is another warm winter month in Hanalei, Hawaii, with an average temperature ranging between min 69.6°F (20.9°C) and max 74.7°F (23.7°C). In January, the average high-temperature is essentially the same as in December - a still warm 74.7°F (23.7°C). Weather in January »

Weather in February

The last month of the winter, February, is also an agreeable month in Hanalei, Hawaii, with an average temperature varying between 68.5°F (20.3°C) and 73.2°F (22.9°C). February and March, with an average high-temperature of 73.2°F (22.9°C), are the coldest months. Weather in February »

Weather in March

The first month of the spring, March, is also an agreeable month in Hanalei, Hawaii, with an average temperature ranging between min 68.9°F (20.5°C) and max 73.2°F (22.9°C). The coldest months are February and March, with an average high-temperature of 73.2°F (22.9°C). Weather in March »

Weather in April

April is a moderately hot spring month in Hanalei, Hawaii, with an average temperature fluctuating between 74.8°F (23.8°C) and 70.9°F (21.6°C). In April, the average high-temperature is practically the same as in March - a moderately hot 74.8°F (23.8°C). Weather in April »

Weather in May

May, the last month of the spring in Hanalei, is another warm month, with an average temperature ranging between max 76.8°F (24.9°C) and min 72.1°F (22.3°C). In May, the average high-temperature is practically the same as in April - a still warm 76.8°F (24.9°C). Weather in May »

Weather in June

June, the first month of the summer in Hanalei, is still a warm month, with temperature in the range of an average high of 78.3°F (25.7°C) and an average low of 73.9°F (23.3°C). In June, the average high-temperature is relatively the same as in May - a still warm 78.3°F (25.7°C). Weather in June »

Weather in July

July, like June, in Hanalei, Hawaii, is a moderately hot summer month, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 75°F (23.9°C). In July, the average high-temperature is essentially the same as in June - a still warm 79°F (26.1°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Hanalei, Hawaii, with an average temperature varying between 79.5°F (26.4°C) and 75.7°F (24.3°C). In Hanalei, Hawaii, the average high-temperature in August is essentially the same as in July - a still warm 79.5°F (26.4°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Hanalei, Hawaii, with temperature in the range of an average high of 79.7°F (26.5°C) and an average low of 75.9°F (24.4°C). With an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 75.9°F (24.4°C), September is the warmest month. Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Hanalei, Hawaii, with an average temperature fluctuating between 75.4°F (24.1°C) and 79.5°F (26.4°C). In October, the average high-temperature is relatively the same as in September - a still warm 79.5°F (26.4°C). Weather in October »

Weather in November

November, the last month of the autumn in Hanalei, is also a moderately hot month, with an average temperature fluctuating between 77.2°F (25.1°C) and 74.1°F (23.4°C). In Hanalei, Hawaii, the average high-temperature in November is almost the same as in October - a still moderately hot 77.2°F (25.1°C). Weather in November »

Weather in December

December, the first month of the winter in Hanalei, is still a warm month, with an average temperature ranging between min 71.8°F (22.1°C) and max 75.4°F (24.1°C). In Hanalei, the average high-temperature in December is practically the same as in November - a still moderately hot 75.4°F (24.1°C). Weather in December »
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FAQ

What is the least humid month in Hanalei?

The least humid month is January, with an average relative humidity of 75%.

How many days does it rain in Hanalei?

Throughout the year, there are 218.4 rainfall days, and 22.13" (562mm) of precipitation is accumulated.

What are the months with the coldest ocean in Hanalei?

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

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

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

What are the coldest months in Hanalei?

The coldest months are February and March, with an average high-temperature of 73.2°F (22.9°C).

What is the wettest month in Hanalei?

The month with the most rainfall in Hanalei, Hawaii, is March, when the rain falls for 18.6 days and typically aggregates up to 2.52" (64mm) of precipitation.

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.

What are the most humid months in Hanalei?

The months with the highest humidity are June through August, October and December, with an average relative humidity of 77%.

When are the longest days in Hanalei?

With an average of 13h and 28min of daylight, June has the longest days of the year in Hanalei, Hawaii.

What month has the most sunshine in Hanalei?

The month with the most sunshine is June, with an average of 9.7h of sunshine.

What is the warmest month in Hanalei?

September is the warmest month, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 75.9°F (24.4°C).

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.

When is the highest UV index in Hanalei?

With an average maximum UV index of 7, September is the month with the highest UV index in Hanalei.

What is the month with the least sunshine in Hanalei?

November has the least sunshine of the year in Hanalei, with an average of 6.2h of sunshine.

What is the month with the shortest days in Hanalei?

With an average of 10h and 48min of daylight, December has the shortest days of the year.

Is there Daylight Saving Time (DST) in Hanalei?

Hanalei, Hawaii, does not observe Daylight Saving Time (DST). HST timezone is used over the entire year.

Average temperature
Hanalei, HI

Average temperature - Hanalei, HI

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).

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
Hanalei, HI

Average pressure - Hanalei, HI

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
Hanalei, HI

Average wind speed - Hanalei, HI

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
Hanalei, HI

Average humidity - Hanalei, HI

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
Hanalei, HI

Average rainfall - Hanalei, HI

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
Hanalei, HI

Average rainfall days - Hanalei, HI

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
Hanalei, HI

Average sea temperature - Hanalei, HI

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 / Average sunshine
Hanalei, HI

Average daylight / Average sunshine - Hanalei, HI

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).

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
Hanalei, HI

Average sunshine days - Hanalei, HI

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
Hanalei, HI

Average UV index - Hanalei, HI

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 visibility
Hanalei, HI

Average visibility - Hanalei, HI

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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