January weather forecast and climate
Hana, HI

Weather in January

January, like December, in Hana, Hawaii, is a moderately hot winter month, with average temperature varying between 71.1°F (21.7°C) and 73.8°F (23.2°C).

Temperature

In Hana, Hawaii, the average high-temperature in January is essentially the same as in December - a still warm 73.8°F (23.2°C). In Hana, Hawaii,, the average low-temperature is 71.1°F (21.7°C).

Humidity

Months with the lowest humidity are January and February, with an average relative humidity of 76%.

Rainfall

In Hana, during January, the rain falls for 10.6 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 136.7 rainfall days, and 13.94" (354mm) of precipitation is accumulated.

Snowfall

January through August, October through December are months without snowfall in Hana.

Ocean temperature

In January, the average ocean temperature is 76.1°F (24.5°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.1°F (24.5°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In January, the average length of the day is 11h.

Sunshine

In Hana, the average sunshine in January is 8.4h.

UV index

Months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: In January, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What are the least humid months in Hana?

January and February, with an average relative humidity of 76%, are the least humid months in Hana.

What is the average humidity in January in Hana?

The average relative humidity in January in Hana, Hawaii, is 76%.

How many days does it rain in January in Hana?

In January, in Hana, the rain falls for 10.6 days. Throughout January, 1.06" (27mm) of precipitation is accumulated.

When it does not snow in Hana?

January through August, October through December are months without snowfall in Hana.

What is the ocean temperature in January in Hana?

In Hana, Hawaii, the average seawater temperature in January is 76.1°F (24.5°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.1°F (24.5°C) water.

What is the average length of the day in January in Hana?

In January, the average length of the day in Hana, Hawaii, is 11h.

How many hours of sunshine does Hana have in January?

In January, the average sunshine is 8.4h.

When is the lowest UV index in Hana?

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

What is the UV index intensity in January in Hana?

The average daily maximum UV index in January is 6. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.

Average temperature in January
Hana, HI

Average temperature in January - Hana, HI
  • Average high temperature in January: 23.2°C

The warmest month (with the highest average high temperature) is September (26.1°C).
The month with the lowest average high temperature is March (22.7°C).

  • Average low temperature in January: 21.7°C

The month with the highest average low temperature is September (24.5°C).
The coldest month (with the lowest average low temperature) is March (21°C).

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Average pressure in January
Hana, HI

Average pressure in January - Hana, HI
  • Average pressure in January: 1015.9mbar

The month with the highest atmospheric pressure is April (1017.8mbar).
The month with the lowest atmospheric pressure is October (1014.9mbar).

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Average wind speed in January
Hana, HI

Average wind speed in January - Hana, HI
  • Average wind speed in January: 17.6km/h

The windiest month (with the highest average wind speed) is June (23.2km/h).
The calmest month (with the lowest average wind speed) is January (17.6km/h).

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Average humidity in January
Hana, HI

Average humidity in January - Hana, HI
  • Average humidity in January: 76%

Months with the highest relative humidity are July and August (78%).
Months with the lowest relative humidity are January and February (76%).

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Average rainfall in January
Hana, HI

Average rainfall in January - Hana, HI
  • Average rainfall in January: 27mm

The wettest month (with the highest rainfall) is October (55mm).
The driest month (with the least rainfall) is September (11mm).

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Average rainfall days in January
Hana, HI

Average rainfall days in January - Hana, HI
  • Average rainfall days in January: 10.6 days

The month with the highest number of rainy days is March (14.1 days).
The month with the least rainy days is September (8.1 days).

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Average snowfall days in January
Hana, HI

Average snowfall days in January - Hana, HI
  • Average snowfall days in January: 0 days

The month with the highest number of snowfall days is September (0.1 days).
Months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).

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Average sea temperature in January
Hana, HI

Average sea temperature in January - Hana, HI
  • Average sea temperature in January: 24.5°C

The best month for swimming (with the highest average sea temperature) is September (26.3°C).
The coldest month (with the lowest average sea temperature) is March (24.1°C).

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Average daylight in January /
Average sunshine in January
Hana, HI

Average daylight in January / Average sunshine in January - Hana, HI
  • Average daylight in January: 11h

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

  • Average sunshine in January: 8.4h

Months with the most sunshine are June and July (Average sunshine: 11.3h).
The month with the least sunshine is December (Average sunshine: 6.7h).

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Average sunshine days in January
Hana, HI

Average sunshine days in January - Hana, HI
  • Average sunshine days in January: 16.8 days

The month with the most sunshine days is January (16.8 days).
The month with the least sunshine days is November (11.2 days).

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Average UV index in January
Hana, HI

Average UV index in January - Hana, HI
  • Average UV index in January: 6

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).

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Average cloud cover in January
Hana, HI

Average cloud cover in January - Hana, HI
  • Average cloud cover in January: 24

The month with the most cloud cover is March (Cloud cover 33).
The month with the least cloud cover is September (Cloud cover 23).

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Average visibility in January
Hana, HI

Average visibility in January - Hana, HI
  • Average visibility in January: 10km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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