Hanalei
Hawaii, USA
Long-term weather forecast
Long-term weather forecast

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
January, like December, in Hanalei, Hawaii, is another warm winter month, with temperature in the range of an average high of 74.7°F (23.7°C) and an average low of 69.6°F (20.9°C). In Hanalei, the average high-temperature in January is practically the same as in December - a still warm 74.7°F (23.7°C). Weather in January »

February, the last month of the winter, in Hanalei, is also an agreeable month, with average temperature fluctuating between 68.5°F (20.3°C) and 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 February »

The first month of the spring, March, is also an agreeable month in Hanalei, Hawaii, with temperature in the range of an average low of 68.9°F (20.5°C) and an average high of 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 »

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

The last month of the spring, May, is also a moderately hot month in Hanalei, Hawaii, with average temperature varying between 72.1°F (22.3°C) and 76.8°F (24.9°C). In Hanalei, the average high-temperature in May is almost the same as in April - a still warm 76.8°F (24.9°C). Weather in May »

The first month of the summer, June, is also a moderately hot month in Hanalei, Hawaii, with average temperature fluctuating between 73.9°F (23.3°C) and 78.3°F (25.7°C). In June, the average high-temperature is relatively the same as in May - a still moderately hot 78.3°F (25.7°C). Weather in June »

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

August, the last month of the summer, in Hanalei, is also a moderately hot month, with temperature in the range of an average low of 75.7°F (24.3°C) and an average high of 79.5°F (26.4°C). In August, the average high-temperature is essentially the same as in July - a still moderately hot 79.5°F (26.4°C). Weather in August »

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

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

November, the last month of the autumn, in Hanalei, is another warm month, with average temperature ranging between min 74.1°F (23.4°C) and max 77.2°F (25.1°C). In Hanalei, Hawaii, the average high-temperature in November is relatively the same as in October - a still warm 77.2°F (25.1°C). Weather in November »

December, the first month of the winter, in Hanalei, is also a moderately hot month, with temperature in the range of an average low of 71.8°F (22.1°C) and an average high of 75.4°F (24.1°C). In December, the average high-temperature is almost the same as in November - a still warm 75.4°F (24.1°C). Weather in December »

What is the least humid month in Hanalei?

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

How many days does it rain in Hanalei?

In Hanalei, Hawaii, during the entire year, the rain falls for 218.4 days and collects up to 22.13" (562mm) 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.

When is the lowest UV index in Hanalei?

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

What is the coldest month in Hanalei?

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

What is the wettest month in Hanalei?

March is the month with the most rainfall in Hanalei. Rain falls for 18.6 days and accumulates 2.52" (64mm) of precipitation.

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.

What are the most humid months in Hanalei?

June through August, October and December, with an average relative humidity of 77%, are most humid months in Hanalei.

When are the longest days in Hanalei?

June has the longest days of the year, with an average of 13.5h of daylight.

What month has the most sunshine in Hanalei?

June has the most sunshine of the year, with an average of 9.7h of sunshine.

What is the warmest month in Hanalei?

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

When is the ocean warmest in Hanalei?

September and October, with an average ocean temperature of 80.6°F (27°C), are months with the warmest seawater in Hanalei.

When is the highest UV index in Hanalei?

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

What is the month with the least sunshine in Hanalei?

The month with the least sunshine in Hanalei is November, with an average of 6.2h of sunshine.

What is the month with the shortest days in Hanalei?

The month with the shortest days in Hanalei, Hawaii, is December, with an average of 10.8h of daylight.
Average temperature - Hanalei, HI
Average humidity - Hanalei, HI

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 - 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 lowest number of rainy days is January (12.5 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
Average UV index - Hanalei, HI

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