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

January weather forecast and climate
Hana, HI

January, the same as December, is a moderately hot winter month in Hana, Hawaii, with average temperature ranging between min 64.9°F (18.3°C) and max 78.1°F (25.6°C).

Temperature

The coldest months are January through March, with an average high-temperature of 78.1°F (25.6°C).

Rainfall

In Hana, in January, during 12 rainfall days, 8" (202.2mm) of precipitation is typically accumulated. Throughout the year, in Hana, there are 171 rainfall days, and 82.5" (2096.7mm) of precipitation is accumulated.

Ocean temperature

In Hana, Hawaii, the average water temperature is 76.3°F (24.6°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.3°F (24.6°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 January, the average sunshine in Hana is 7h.

UV index

The average daily maximum UV index in January is 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What are the coldest months in Hana?

January through March, with an average high-temperature of 78.1°F (25.6°C), are the coldest months in Hana.

What is the temperature in January in Hana?

The average high-temperature, in January, is 78.1°F (25.6°C), while the average low-temperature is 64.9°F (18.3°C).

How much does it rain in Hana in January?

In January, in Hana, Hawaii, the rain falls for 12 days. Throughout January, 8" (202.2mm) of precipitation is accumulated.

What is the ocean temperature in January in Hana?

In Hana, the average seawater temperature in January is 76.3°F (24.6°C). 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 76.3°F (24.6°C).

How many hours of daylight does Hana have in January?

The average length of the day in January in Hana is 11h.

How many hours of sunshine does Hana have in January?

The average sunshine in January in Hana, Hawaii, is 7h.

What is the UV index intensity in January in Hana?

In January, the average daily maximum UV index in Hana, Hawaii, is 7. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in January - Hana, HI
  • Average high temperature in January: 25.6°C

Warmest months (with the highest average high temperature) are August and September (28.3°C).
Months with the lowest average high temperature are January, February and March (25.6°C).

  • Average low temperature in January: 18.3°C

The month with the highest average low temperature is August (22.2°C).
The coldest month (with the lowest average low temperature) is February (17.8°C).

Average rainfall in January - Hana, HI
  • Average rainfall in January: 202.2mm

The wettest month (with the highest rainfall) is March (241.8mm).
The driest month (with the lowest rainfall) is June (103.6mm).

Average rainfall days in January - Hana, HI
  • Average rainfall days in January: 12 days

Months with the highest number of rainy days are April, July and August (16 days).
Months with the lowest number of rainy days are January and February (12 days).

Average sea temperature in January - Hana, HI
  • Average sea temperature in January: 24.6°C

The best month for swimming (with the highest average sea temperature) is September (26.7°C).
The coldest month (with the lowest average sea temperature) is March (24.3°C).

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 shortest days is December (Average daylight: 10.9h).

  • Average sunshine in January: 7h

Months with most sunshine are June, July, August and September (Average sunshine: 8h).
Months with least sunshine are November and December (Average sunshine: 6).

Average UV index in January - Hana, HI
  • Average UV index in January: 7

Months with the highest UV index are June, July and August (UV index 12).
The month with the lowest UV index is December (UV index 6).