Climate and monthly weather forecast
Waialua, HI

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Weather in January

January, the same as December, is a moderately hot winter month in Waialua, Hawaii, with an average temperature varying between 75.9°F (24.4°C) and 70°F (21.1°C). The arrival of January marks a slight shift to an average high-temperature of a still moderately hot 75.9°F (24.4°C) from December's 76.6°F (24.8°C). Weather in January »

Weather in February

February, the last month of the winter in Waialua, is also a moderately hot month, with an average temperature varying between 75°F (23.9°C) and 68.5°F (20.3°C). February, having an average high-temperature of 75°F (23.9°C) and an average low-temperature of 68.5°F (20.3°C), is the coldest month. Weather in February »

Weather in March

The first month of the spring, March, is still a warm month in Waialua, Hawaii, with an average temperature fluctuating between 69.3°F (20.7°C) and 75.2°F (24°C). In March, Waialua notes an average high-temperature of a still moderately hot 75.2°F (24°C), hardly different from the preceding month. Weather in March »

Weather in April

April, like March, in Waialua, Hawaii, is a moderately hot spring month, with an average temperature varying between 76.8°F (24.9°C) and 71.2°F (21.8°C). April records an average high-temperature of a still moderately hot 76.8°F (24.9°C), indicating a minor variation from the preceding month. Weather in April »

Weather in May

The last month of the spring, May, is also a moderately hot month in Waialua, Hawaii, with an average temperature varying between 72.9°F (22.7°C) and 78.6°F (25.9°C). Waialua experiences a transition to a still warm 78.6°F (25.9°C) in average high-temperatures with the arrival of May, not greatly differing 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 Waialua, Hawaii, with an average temperature varying between 74.1°F (23.4°C) and 79.9°F (26.6°C). June is marked by an average high-temperature of a still warm 79.9°F (26.6°C), almost identical to the preceding month. Weather in June »

Weather in July

July, like June, in Waialua, Hawaii, is a moderately hot summer month, with temperature in the range of an average low of 75.2°F (24°C) and an average high of 80.8°F (27.1°C). Waialua records a slight change with July's average high-temperatures adjusting to a still warm 80.8°F (27.1°C) from June's 79.9°F (26.6°C). Weather in July »

Weather in August

August, the last month of the summer in Waialua, is also a moderately hot month, with an average temperature varying between 81.5°F (27.5°C) and 75.7°F (24.3°C). Stepping into August, Waialua records an average high-temperature of a still moderately hot 81.5°F (27.5°C), almost consistent with July. Weather in August »

Weather in September

September, the first month of the autumn in Waialua, is also a moderately hot month, with an average temperature fluctuating between 75.7°F (24.3°C) and 81.7°F (27.6°C). September temperatures tend to peak at an average high of 81.7°F (27.6°C) and dip to a low of 75.7°F (24.3°C). Throughout September, the heat index is evaluated at a hot 86°F (30°C). Weather in September »

Weather in October

October, the same as September, is another warm autumn month in Waialua, Hawaii, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 75.4°F (24.1°C). In October, the average high-temperature registers at a still moderately hot 81.1°F (27.3°C), nearly identical to September's 81.7°F (27.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another warm month in Waialua, Hawaii, with an average temperature varying between 78.8°F (26°C) and 73.6°F (23.1°C). Waialua ushers in November with an average high-temperature of a still moderately hot 78.8°F (26°C), showing a close resemblance to the previous month. Weather in November »

Weather in December

The first month of the winter, December, is still a warm month in Waialua, Hawaii, with temperature in the range of an average low of 71.2°F (21.8°C) and an average high of 76.6°F (24.8°C). Waialua marks the onset of December with an average high-temperature of a still warm 76.6°F (24.8°C), a subtle shift from November's 78.8°F (26°C). Weather in December »
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Frequently asked questions

How much does it rain in Waialua?

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 Waialua?

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

What month is the coldest in Waialua?

The lowest temperatures in Waialua are recorded in February, with averages reaching a high of 75°F (23.9°C) and a low of 68.5°F (20.3°C).

What is the most humid month in Waialua?

February and December, with an average relative humidity of 76%, are most humid months.

What is the wettest month in Waialua?

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

What month is the ocean coldest in Waialua?

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

What are the least humid months in Waialua?

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

When are the longest days in Waialua?

June has the longest days of the year in Waialua, Hawaii, with an average of 13h and 24min of daylight.

What month has the most sunshine in Waialua?

The month with the most sunshine is June, with an average of 9.9h of sunshine.

What is the driest month in Waialua?

July is the month with the least rainfall in Waialua, Hawaii. Rain falls for 16.6 days and accumulates 0.63" (16mm) of precipitation.

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

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

What time of the year is the hottest in Waialua?

September is the month when Waialua sees the average highest temperatures, with a high of 81.7°F (27.6°C) and a low of 75.7°F (24.3°C).

When is the ocean warmest in Waialua?

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

What is the month with the least sunshine in Waialua?

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

What is the month with the shortest days in Waialua?

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

Is there Daylight Saving Time (DST) in Waialua?

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

Average temperature
Waialua, HI

Average temperature - Waialua, 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
Waialua, HI

Average pressure - Waialua, 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
Waialua, HI

Average wind speed - Waialua, 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
Waialua, HI

Average humidity - Waialua, 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
Waialua, HI

Average rainfall - Waialua, 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
Waialua, HI

Average rainfall days - Waialua, 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
Waialua, HI

Average sea temperature - Waialua, 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
Waialua, HI

Average daylight / Average sunshine - Waialua, 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
Waialua, HI

Average sunshine days - Waialua, 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
Waialua, HI

Average UV index - Waialua, 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
Waialua, HI

Average visibility - Waialua, 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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Waialua, Hawaii, USA

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