Climate and monthly weather forecast
Poipu, HI

Weather in January

January, the same as December, is a moderately hot winter month in Poipu, 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 almost the same as in December - a still warm 74.7°F (23.7°C). Weather in January »

Weather in February

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

Weather in March

The first month of the spring, March, is still a pleasant month in Poipu, Hawaii, with an average temperature fluctuating between 68.9°F (20.5°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 March »

Weather in April

April is a moderately hot spring month in Poipu, 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 relatively the same as in March - a warm 74.8°F (23.8°C). Weather in April »

Weather in May

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

Weather in June

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

Weather in July

July, the same as June, is another warm summer month in Poipu, Hawaii, with an average temperature varying between 75°F (23.9°C) and 79°F (26.1°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 also a moderately hot month in Poipu, Hawaii, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 75.7°F (24.3°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 »

Weather in September

The first month of the autumn, September, is still a warm month in Poipu, 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). 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). Weather in September »

Weather in October

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

Weather in November

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

Weather in December

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

What is the least humid month in Poipu?

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

How much does it rain in Poipu?

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

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

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

What are the coldest months in Poipu?

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

What is the rainiest month in Poipu?

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

What is the driest month in Poipu?

The month with the least rainfall is April, when the rain falls for 18.3 days and typically collects 1.3" (33mm) of precipitation.

What is the most humid month in Poipu?

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

When are the longest days in Poipu?

The month with the longest days in Poipu, Hawaii, is June, with an average of 13h and 27min of daylight.

What month has the most sunshine in Poipu?

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

What is the warmest month in Poipu?

September is the warmest month in Poipu, 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 highest UV index in Poipu?

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

What is the month with the least sunshine in Poipu?

With an average of 6.2h of sunshine, November has the least sunshine of the year.

What is the month with the shortest days in Poipu?

December has the shortest days of the year in Poipu, with an average of 10h and 49min of daylight.

Is there Daylight Saving Time (DST) in Poipu?

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

Average temperature
Poipu, HI

Average temperature - Poipu, 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
Poipu, HI

Average pressure - Poipu, 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
Poipu, HI

Average wind speed - Poipu, 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
Poipu, HI

Average humidity - Poipu, 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
Poipu, HI

Average rainfall - Poipu, 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
Poipu, HI

Average rainfall days - Poipu, 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 daylight / Average sunshine
Poipu, HI

Average daylight / Average sunshine - Poipu, HI

The month with the longest days is June (Average daylight: 13h and 27min).
The month with the shortest days is December (Average daylight: 10h and 49min).

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
Poipu, HI

Average sunshine days - Poipu, 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
Poipu, HI

Average UV index - Poipu, 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
Poipu, HI

Average visibility - Poipu, 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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