Climate and monthly weather forecast
Haleiwa, HI

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Weather in January

January, the same as December, is a moderately hot winter month in Haleiwa, Hawaii, with an average temperature ranging between min 70°F (21.1°C) and max 75.9°F (24.4°C). With the onset of January, the average high-temperature stands at a still moderately hot 75.9°F (24.4°C), closely aligned with December's 76.6°F (24.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another warm month in Haleiwa, Hawaii, with an average temperature varying between 75°F (23.9°C) and 68.5°F (20.3°C). February, noted for its average high-temperature of 75°F (23.9°C) and an average low-temperature of 68.5°F (20.3°C), is considered the coldest month. Weather in February »

Weather in March

The first month of the spring, March, is also a moderately hot month in Haleiwa, Hawaii, with an average temperature fluctuating between 69.3°F (20.7°C) and 75.2°F (24°C). Haleiwa measures an average high-temperature of a still moderately hot 75.2°F (24°C) in March, nearly consistent with the preceding month. Weather in March »

Weather in April

April, the same as March, is another warm spring month in Haleiwa, Hawaii, with an average temperature ranging between max 76.8°F (24.9°C) and min 71.2°F (21.8°C). Stepping into April, Haleiwa records an average high-temperature of a still warm 76.8°F (24.9°C), almost consistent with March. Weather in April »

Weather in May

May, the last month of the spring in Haleiwa, is also a moderately hot month, with an average temperature varying between 72.9°F (22.7°C) and 78.6°F (25.9°C). The transition into May is marked with an average high-temperature of a still moderately hot 78.6°F (25.9°C), showing an insignificant shift from April's 76.8°F (24.9°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Haleiwa, Hawaii, with an average temperature varying between 79.9°F (26.6°C) and 74.1°F (23.4°C). The advent of June denotes an average high-temperature of a still moderately hot 79.9°F (26.6°C), subtly different from May's 78.6°F (25.9°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Haleiwa, Hawaii, with an average temperature varying between 75.2°F (24°C) and 80.8°F (27.1°C). Haleiwa's transition from June to July introduces an average high-temperature of a still moderately hot 80.8°F (27.1°C), marking an insignificant variation from the 79.9°F (26.6°C). Weather in July »

Weather in August

August, the last month of the summer in Haleiwa, is also a moderately hot month, with an average temperature fluctuating between 81.5°F (27.5°C) and 75.7°F (24.3°C). The arrival of August marks a slight shift to an average high-temperature of a still moderately hot 81.5°F (27.5°C) from July's 80.8°F (27.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Haleiwa, 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 81.7°F (27.6°C). September is the month when Haleiwa experiences its warmest temperatures, averaging a high of 81.7°F (27.6°C) and a low of 75.7°F (24.3°C). September's heat index is evaluated at a hot 86°F (30°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Haleiwa, Hawaii, with temperature in the range of an average low of 75.4°F (24.1°C) and an average high of 81.1°F (27.3°C). As Haleiwa transitions into October, the average high-temperature stands at a still moderately hot 81.1°F (27.3°C), offering little variation from the preceding month. Weather in October »

Weather in November

The last month of the autumn, November, is also a moderately hot month in Haleiwa, Hawaii, with temperature in the range of an average high of 78.8°F (26°C) and an average low of 73.6°F (23.1°C). October's transformation into November witnesses an average high-temperature of a still warm 78.8°F (26°C), noting a minor change from the preceding month. Weather in November »

Weather in December

The first month of the winter, December, is still a warm month in Haleiwa, Hawaii, with an average temperature varying between 71.2°F (21.8°C) and 76.6°F (24.8°C). December commences with an average high-temperature of a still warm 76.6°F (24.8°C), showing little deviation from November's 78.8°F (26°C). Weather in December »
Updated: Feb 10, 2024 | Published by: Weather U.S. | Resources

Frequently asked questions

How much does it rain in Haleiwa?

Throughout the year, there are 190.2 rainfall days, and 11.65" (296mm) of precipitation is accumulated.

What are the months with the lowest UV index in Haleiwa?

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

What part of the year is the coldest in Haleiwa?

February brings the lowest temperatures, with an average high of 75°F (23.9°C) and an average low of 68.5°F (20.3°C).

What is the most humid month in Haleiwa?

The months with the highest humidity in Haleiwa are February and December, with an average relative humidity of 76%.

What is the wettest month in Haleiwa?

The wettest months are February and October, with an average 1.34" (34mm) of rainfall.

What month is the ocean coldest in Haleiwa?

With an average ocean temperature of 75.2°F (24°C), March is the month with the coldest seawater in Haleiwa.

What is the least humid month in Haleiwa?

The months with the lowest humidity in Haleiwa are May and September, with an average relative humidity of 74%.

When are the longest days in Haleiwa?

The month with the longest days is June, with an average of 13h and 24min of daylight.

What month has the most sunshine in Haleiwa?

With an average of 9.9h of sunshine, June has the most sunshine of the year in Haleiwa.

What is the driest month in Haleiwa?

The month with the least rainfall in Haleiwa, Hawaii, is July, when the rain falls for 16.6 days and typically collects 0.63" (16mm) of precipitation.

When is the highest UV index in Haleiwa?

July and September, with an average maximum UV index of 7, are months with the highest UV index.

What are the warmest months in Haleiwa?

Haleiwa's warmest temperatures are experienced in September, with average high temperatures of 81.7°F (27.6°C) and lows of 75.7°F (24.3°C).

What is the month with the warmest ocean in Haleiwa?

With an average ocean temperature of 80.2°F (26.8°C), September is the month with the warmest seawater.

What is the month with the least sunshine in Haleiwa?

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 Haleiwa?

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

Is there Daylight Saving Time (DST) in Haleiwa?

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

Average temperature
Haleiwa, HI

Average temperature - Haleiwa, HI

The warmest month (with the highest average high temperature) is September (81.7°F).
The month with the lowest average high temperature is February (75°F).

The months with the highest average low temperature are August and September (75.7°F).
The coldest month (with the lowest average low temperature) is February (68.5°F).

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Average pressure
Haleiwa, HI

Average pressure - Haleiwa, HI

The month with the highest atmospheric pressure is April (30.06"Hg).
The month with the lowest atmospheric pressure is October (29.97"Hg).

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Average wind speed
Haleiwa, HI

Average wind speed - Haleiwa, HI

The windiest month (with the highest average wind speed) is July (11.6mph).
The calmest month (with the lowest average wind speed) is January (9mph).

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Average humidity
Haleiwa, HI

Average humidity - Haleiwa, HI

The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are May and September (74%).

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Average rainfall
Haleiwa, HI

Average rainfall - Haleiwa, HI

The wettest months (with the highest rainfall) are February and October (1.34").
The driest month (with the least rainfall) is July (0.63").

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Average rainfall days
Haleiwa, HI

Average rainfall days - Haleiwa, HI

The month with the highest number of rainy days is March (17.7 days).
The month with the least rainy days is January (12.5 days).

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Average sea temperature
Haleiwa, HI

Average sea temperature - Haleiwa, HI

The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (75.2°F).

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Average daylight / Average sunshine
Haleiwa, HI

Average daylight / Average sunshine - Haleiwa, HI

The month with the longest days is June (Average daylight: 13h and 24min).
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 54min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).

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Average sunshine days
Haleiwa, HI

Average sunshine days - Haleiwa, HI

The month with the most sunshine days is January (12.9 days).
The month with the least sunshine days is September (6.5 days).

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Average UV index
Haleiwa, HI

Average UV index - Haleiwa, HI

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

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Average visibility
Haleiwa, HI

Average visibility - Haleiwa, 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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Haleiwa, Hawaii, USA

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