Monthly weather forecast and climate
Halawa, HI

January, the same as December, is another warm winter month in Halawa, Hawaii, with average temperature ranging between min 60.8°F (16°C) and max 77°F (25°C). January through March, with an average high-temperature of 77°F (25°C), are the coldest months. Weather in January »
February, the last month of the winter, in Halawa, is another warm month, with average temperature ranging between min 60.8°F (16°C) and max 77°F (25°C). The coldest months are January through March, with an average high-temperature of 77°F (25°C). Weather in February »

The first month of the spring, March, is still a warm month in Halawa, Hawaii, with average temperature varying between 77°F (25°C) and 60.8°F (16°C). The coldest months are January through March, with an average high-temperature of 77°F (25°C). Weather in March »

April, the same as March, is a warm spring month in Halawa, Hawaii, with average temperature ranging between max 78.8°F (26°C) and min 62.6°F (17°C). In April, the average high-temperature is 78.8°F (26°C), and the average low-temperature is 62.6°F (17°C). Weather in April »

May, the last month of the spring, in Halawa, is another warm month, with average temperature fluctuating between 64.4°F (18°C) and 80.6°F (27°C). The average high-temperature, is 80.6°F (27°C), while the average low-temperature is 64.4°F (18°C). Weather in May »

June, the first month of the summer, in Halawa, is also a warm month, with average temperature fluctuating between 80.6°F (27°C) and 66.2°F (19°C). In June, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 66.2°F (19°C). Weather in June »

July, like June, in Halawa, Hawaii, is another warm summer month, with average temperature ranging between min 66.2°F (19°C) and max 82.4°F (28°C). Warmest months are July through October, with an average high-temperature of 82.4°F (28°C). Weather in July »

The last month of the summer, August, is also a warm month in Halawa, Hawaii, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 68°F (20°C). July through October, with an average high-temperature of 82.4°F (28°C), are warmest months. Weather in August »

September, the first month of the autumn, in Halawa, is still a warm month, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 66.2°F (19°C). Warmest months are July through October, with an average high-temperature of 82.4°F (28°C). Weather in September »

October, like September, in Halawa, Hawaii, is a warm autumn month, with average temperature varying between 82.4°F (28°C) and 66.2°F (19°C). July through October, with an average high-temperature of 82.4°F (28°C), are warmest months. Weather in October »

The last month of the autumn, November, is another warm month in Halawa, Hawaii, with average temperature ranging between max 80.6°F (27°C) and min 64.4°F (18°C). The average high-temperature, is 80.6°F (27°C), while the average low-temperature is 64.4°F (18°C). Weather in November »

The first month of the winter, December, is still a warm month in Halawa, Hawaii, with average temperature varying between 62.6°F (17°C) and 78.8°F (26°C). In Halawa, the average high-temperature is 78.8°F (26°C), and the average low-temperature is 62.6°F (17°C). Weather in December »

What is the coldest month in Halawa?

January through March, with an average high-temperature of 77°F (25°C), are the coldest months.

How many days does it rain in Halawa?

In Halawa, during the entire year, the rain falls for 116 days and collects up to 55" (1396mm) of precipitation.

What is the rainiest month in Halawa?

The month with the most rainfall in Halawa is January when the rain falls for 12 days and typically aggregates up to 7.4" (187mm) of precipitation.

What are the months with the coldest ocean in Halawa?

January through April, with an average ocean temperature of 75.2°F (24°C), are months with the coldest seawater in Halawa. For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 75.2°F (24°C).

What is the month with the least sunshine in Halawa?

Months with the least sunshine in Halawa are January, February, November and December, with an average of 7h of sunshine.

What are the months with the most sunshine in Halawa?

Months with the most sunshine in Halawa, Hawaii, are May through September, with an average of 9h of sunshine.

What is the driest month in Halawa?

The month with the least rainfall in Halawa is June when the rain falls for 7 days and typically collects 1.9" (47mm) of precipitation.

When are the longest days in Halawa?

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

When is the highest UV index in Halawa?

Months with the highest UV index in Halawa, Hawaii, are June through August, with an average maximum UV index of 12.

What is the warmest month in Halawa?

July through October, with an average high-temperature of 82.4°F (28°C), are warmest months in Halawa, Hawaii.

When is the ocean warmest in Halawa?

September is the month with the warmest seawater in Halawa, Hawaii, with an average ocean temperature of 80.6°F (27°C). For any water activity, surface water temperatures between 77°F (25°C) and 84.2°F (29°C) are considered as excellent and extremely pleasant for lengthened periods.

What is the month with the shortest days in Halawa?

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

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

With an average maximum UV index of 6, December is the month with the lowest UV index in Halawa, Hawaii.
Average temperature - Halawa, HI
Average rainfall - Halawa, HI
Average rainfall days - Halawa, HI

Months with the highest number of rainy days are January, March, April and December (12 days).
Months with the lowest number of rainy days are June and September (7 days).

Average sea temperature - Halawa, HI

The best month for swimming (with the highest average sea temperature) is September (81°F).
Coldest months (with the lowest average sea temperature) are January, February, March and April (75°F).

Average daylight / Average sunshine - Halawa, HI

The month with the longest days is June (Average daylight: 13.4h).
The month with shortest days is December (Average daylight: 10.9h).

Months with most sunshine are May, June, July, August and September (Average sunshine: 9h).
Months with least sunshine are January, February, November and December (Average sunshine: 7).

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