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

Monthly weather forecast and climate
Waipahu, HI

January, the same as December, is a moderately hot winter month in Waipahu, Hawaii, with average temperature varying between 69.1°F (20.6°C) and 75.7°F (24.3°C). In Waipahu, Hawaii, the average high-temperature in January is relatively the same as in December - a still moderately hot 75.7°F (24.3°C). Weather in January »

February, the last month of the winter, in Waipahu, is also a moderately hot month, with average temperature varying between 75.4°F (24.1°C) and 68°F (20°C). February and March, with an average high-temperature of 75.4°F (24.1°C), are the coldest months. Weather in February »

March, the first month of the spring, in Waipahu, is also a moderately hot month, with average temperature ranging between max 75.4°F (24.1°C) and min 68.5°F (20.3°C). February and March, with an average high-temperature of 75.4°F (24.1°C), are the coldest months. Weather in March »

April, like March, in Waipahu, Hawaii, is another warm spring month, with average temperature varying between 70.7°F (21.5°C) and 76.8°F (24.9°C). In Waipahu, the average high-temperature is essentially the same as in March - a still warm 76.8°F (24.9°C). Weather in April »

May, the last month of the spring, in Waipahu, is also a moderately hot month, with average temperature varying between 78.6°F (25.9°C) and 72.1°F (22.3°C). In May, the average high-temperature is relatively the same as in April - a still warm 78.6°F (25.9°C). Weather in May »

June, the first month of the summer, in Waipahu, is still a warm month, with average temperature ranging between min 73.4°F (23°C) and max 79.7°F (26.5°C). In June, the average high-temperature is relatively the same as in May - a still moderately hot 79.7°F (26.5°C). Weather in June »

July, the same as June, is another warm summer month in Waipahu, Hawaii, with average temperature ranging between max 81.1°F (27.3°C) and min 74.5°F (23.6°C). In Waipahu, the average high-temperature in July is almost the same as in June - a still moderately hot 81.1°F (27.3°C). Weather in July »

August, the last month of the summer, in Waipahu, is also a moderately hot month, with average temperature fluctuating between 82°F (27.8°C) and 74.8°F (23.8°C). The warmest months are August and September, with an average high-temperature of 82°F (27.8°C). The average heat index is estimated at a tropical 87.6°F (30.9°C). Weather in August »

The first month of the autumn, September, is also a moderately hot month in Waipahu, Hawaii, with temperature in the range of an average low of 75°F (23.9°C) and an average high of 82°F (27.8°C). The warmest months are August and September, with an average high-temperature of 82°F (27.8°C). In September, the average heat index is calculated to a tropical 87.4°F (30.8°C). Weather in September »

October, like September, in Waipahu, Hawaii, is a moderately hot autumn month, with average temperature ranging between max 81.1°F (27.3°C) and min 74.7°F (23.7°C). In October, the average high-temperature is essentially the same as in September - a still moderately hot 81.1°F (27.3°C). Weather in October »

November, the last month of the autumn, in Waipahu, is another warm month, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 73.2°F (22.9°C). In Waipahu, the average high-temperature is almost the same as in October - a still warm 79°F (26.1°C). Weather in November »

The first month of the winter, December, is still a warm month in Waipahu, Hawaii, with average temperature fluctuating between 76.5°F (24.7°C) and 70.5°F (21.4°C). In Waipahu, the average high-temperature in December is essentially the same as in November - a still moderately hot 76.5°F (24.7°C). Weather in December »

How many days does it rain in Waipahu?

Throughout the year, there are 208.4 rainfall days, and 16.5" (419mm) of precipitation is accumulated.

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

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

What are the coldest months in Waipahu?

February and March, with an average high-temperature of 75.4°F (24.1°C), are the coldest months in Waipahu, Hawaii.

What is the most humid month in Waipahu?

Months with the highest humidity are February and December, with an average relative humidity of 76%.

What month is the ocean coldest in Waipahu?

March is the month with the coldest seawater, with an average ocean temperature of 75.7°F (24.3°C).

What are the least humid months in Waipahu?

Months with the lowest humidity in Waipahu are April through June and September, with an average relative humidity of 74%.

When are the longest days in Waipahu?

The month with the longest days in Waipahu is June, with an average of 13.4h of daylight.

What month has the most sunshine in Waipahu?

June has the most sunshine of the year in Waipahu, Hawaii, with an average of 9.9h of sunshine.

What is the driest month in Waipahu?

The month with the least rainfall in Waipahu is July when the rain falls for 16.4 days and typically collects 0.71" (18mm) of precipitation.

What are the warmest months in Waipahu?

Warmest months in Waipahu are August and September, with an average high-temperature of 82°F (27.8°C).

What month is the ocean warmest in Waipahu?

The month with the warmest seawater is September, with an average ocean temperature of 80.6°F (27°C).

When is the highest UV index in Waipahu?

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

What is the rainiest month in Waipahu?

October is the month with the most rainfall. Rain falls for 18.4 days and accumulates 2.09" (53mm) of precipitation.

What is the month with the least sunshine in Waipahu?

November and December, with an average of 6.3h of sunshine, are months with the least sunshine.

What is the month with the shortest days in Waipahu?

December has the shortest days of the year in Waipahu, Hawaii, with an average of 10.8h of daylight.
Average temperature - Waipahu, HI
Average humidity - Waipahu, HI

Months with the highest relative humidity are February and December (76%).
Months with the lowest relative humidity are April, May, June and September (74%).

Average rainfall - Waipahu, HI

The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the lowest rainfall) is July (0.71").

Average rainfall days - Waipahu, HI

The month with the highest number of rainy days is March (20 days).
The month with the lowest number of rainy days is January (13.5 days).

Average sea temperature - Waipahu, HI

The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

Average daylight / Average sunshine - Waipahu, HI

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.8h).

The month with most sunshine is June (Average sunshine: 9.9h).
Months with least sunshine are November and December (Average sunshine: 6.3).

Average UV index - Waipahu, 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).