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

Monthly weather forecast and climate
Kahului, HI

January, like December, in Kahului, Hawaii, is a moderately hot winter month, with average temperature fluctuating between 80.6°F (27°C) and 63.3°F (17.4°C). The coldest month is January, with an average high-temperature of 80.6°F (27°C) and an average low-temperature of 63.3°F (17.4°C). Weather in January »
February, the last month of the winter, in Kahului, is another warm month, with average temperature varying between 80.8°F (27.1°C) and 63°F (17.2°C). In Kahului, the average high-temperature is relatively the same as in January - a still moderately hot 80.8°F (27.1°C). Weather in February »

The first month of the spring, March, is still a warm month in Kahului, Hawaii, with average temperature ranging between min 64.4°F (18°C) and max 81.3°F (27.4°C). In March, the average high-temperature is practically the same as in February - a still moderately hot 81.3°F (27.4°C). Weather in March »

April, like March, in Kahului, Hawaii, is another warm spring month, with average temperature varying between 82.4°F (28°C) and 65.7°F (18.7°C). In April, the average high-temperature is almost the same as in March - a still moderately hot 82.4°F (28°C). Weather in April »

May, the last month of the spring, in Kahului, is another warm month, with average temperature ranging between min 67.1°F (19.5°C) and max 84.4°F (29.1°C). In May, the average high-temperature is practically the same as in April - a still warm 84.4°F (29.1°C). Weather in May »

June, the first month of the summer, in Kahului, is a hot month, with average temperature fluctuating between 86.4°F (30.2°C) and 69.6°F (20.9°C). In Kahului, the average high-temperature in June is essentially the same as in May - a tropical 86.4°F (30.2°C). Weather in June »

July, the same as June, in Kahului, Hawaii, is another tropical summer month, with average temperature fluctuating between 71.1°F (21.7°C) and 87.3°F (30.7°C). In July, the average high-temperature is essentially the same as in June - a still tropical 87.3°F (30.7°C). Weather in July »

August, the last month of the summer, in Kahului, is another tropical month, with temperature in the range of an average high of 88°F (31.1°C) and an average low of 71.4°F (21.9°C). August and September, with an average high-temperature of 88°F (31.1°C), are the warmest months. Weather in August »

The first month of the autumn, September, is still a tropical month in Kahului, Hawaii, with average temperature fluctuating between 70.3°F (21.3°C) and 88°F (31.1°C). August and September, with an average high-temperature of 88°F (31.1°C), are the warmest months. Weather in September »

October, the same as September, in Kahului, Hawaii, is another tropical autumn month, with average temperature fluctuating between 69.4°F (20.8°C) and 86.7°F (30.4°C). In Kahului, the average high-temperature is essentially the same as in September - a still tropical 86.7°F (30.4°C). Weather in October »

The last month of the autumn, November, is another warm month in Kahului, Hawaii, with temperature in the range of an average low of 68°F (20°C) and an average high of 84°F (28.9°C). In November, the average high-temperature is practically the same as in October - a moderately hot 84°F (28.9°C). Weather in November »

December, the first month of the winter, in Kahului, is also a moderately hot month, with average temperature varying between 65.1°F (18.4°C) and 81.7°F (27.6°C). In Kahului, the average high-temperature is almost the same as in November - a still moderately hot 81.7°F (27.6°C). Weather in December »

What is the coldest month in Kahului?

The coldest month in Kahului is January, with an average high-temperature of 80.6°F (27°C) and an average low-temperature of 63.3°F (17.4°C).

What is the most humid month in Kahului?

The most humid month is January, with an average relative humidity of 77.5%.

How many days does it rain in Kahului?

In Kahului, during the entire year, the rain falls for 94.7 days and collects up to 17.8" (453mm) of precipitation.

When is the lowest UV index in Kahului?

Months with the lowest UV index in Kahului are January and December, with an average maximum UV index of 7.

What month is the ocean coldest in Kahului?

The month with the coldest seawater is March, with an average ocean temperature of 75.7°F (24.3°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 75.7°F (24.3°C) water.

When is the highest UV index in Kahului?

Months with the highest UV index are May through August, with an average maximum UV index of 12.

What is the driest month in Kahului?

June is the month with the least rainfall in Kahului, Hawaii. Rain falls for 5.1 days and accumulates 0.2" (5.1mm) of precipitation.

When are the longest days in Kahului?

With an average of 13.4h of daylight, June has the longest days of the year.

What month has the most sunshine in Kahului?

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

What is the warmest month in Kahului?

Warmest months in Kahului are August and September, with an average high-temperature of 88°F (31.1°C).

What is the least humid month in Kahului?

The least humid month is August, with an average relative humidity of 69.4%.

What is the month with the warmest ocean in Kahului?

September is the month with the warmest seawater in Kahului, with an average ocean temperature of 80.1°F (26.7°C). For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the wettest month in Kahului?

The month with the most rainfall is December when the rain falls for 10.7 days and typically aggregates up to 3.4" (85.1mm) of precipitation.

What is the month with the shortest days in Kahului?

With an average of 10.9h of daylight, December has the shortest days of the year in Kahului.

What is the month with the least sunshine in Kahului?

The month with the least sunshine in Kahului is December, with an average of 6.9h of sunshine.
Average temperature - Kahului, HI
Average humidity - Kahului, HI

The month with the highest relative humidity is January (77.5%).
The month with the lowest relative humidity is August (69.4%).

Average rainfall - Kahului, HI
Average rainfall days - Kahului, HI

The month with the highest number of rainy days is December (10.7 days).
The month with the lowest number of rainy days is September (4.5 days).

Average sea temperature - Kahului, HI

The best month for swimming (with the highest average sea temperature) is September (80°F).
The coldest month (with the lowest average sea temperature) is March (75.6°F).

Average daylight / Average sunshine - Kahului, HI
Average UV index - Kahului, HI