January weather forecast and climate
Wainaku, HI

Weather in January

January, the same as December, in Wainaku, Hawaii, is an agreeable winter month, with average temperature fluctuating between 64.8°F (18.2°C) and 70.9°F (21.6°C).

Temperature

In Wainaku, the average high-temperature in January is essentially the same as in December - a still pleasant 70.9°F (21.6°C). The average low-temperature, in January, is 64.8°F (18.2°C).

Humidity

Months with the lowest humidity are January, May through July, with an average relative humidity of 78%.

Rainfall

In January, in Wainaku, Hawaii, the rain falls for 13.3 days. Throughout January, 2.72" (69mm) of precipitation is accumulated. Throughout the year, in Wainaku, Hawaii, there are 227.7 rainfall days, and 27.83" (707mm) of precipitation is accumulated.

Ocean temperature

In Wainaku, the average water temperature is 76.6°F (24.8°C).
Note: 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 76.6°F (24.8°C).

Daylight

In Wainaku, the average length of the day in January is 11.1h.

Sunshine

In Wainaku, the average sunshine is 7.9h.

UV index

January through April, with an average maximum UV index of 5, are months with the lowest UV index in Wainaku. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
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FAQ

What is the least humid month in Wainaku?

Months with the lowest humidity in Wainaku are January, May through July, with an average relative humidity of 78%.

What is the average humidity in January in Wainaku?

In January, the average relative humidity in Wainaku is 78%.

How much does it rain in Wainaku in January?

In Wainaku, during January, the rain falls for 13.3 days and regularly aggregates up to 2.72" (69mm) of precipitation.

What is the water temperature in January in Wainaku?

In January, the average ocean temperature is 76.6°F (24.8°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 76.6°F (24.8°C) water.

How many hours of daylight does Wainaku have in January?

In January, the average length of the day in Wainaku, Hawaii, is 11.1h.

How long on average sun shines in January in Wainaku?

The average sunshine in January in Wainaku, Hawaii, is 7.9h.

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

Months with the lowest UV index in Wainaku, Hawaii, are January through April, with an average maximum UV index of 5.

What is the UV index reading in January in Wainaku?

In January, the average daily maximum UV index in Wainaku is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unprotected exposure to the UV radiation.

Average temperature in January
Wainaku, HI

Average temperature in January - Wainaku, HI
  • Average high temperature in January: 70.9°F

The warmest month (with the highest average high temperature) is August (75.4°F).
The month with the lowest average high temperature is March (69.6°F).

  • Average low temperature in January: 64.8°F

The month with the highest average low temperature is September (70°F).
The coldest month (with the lowest average low temperature) is March (64°F).

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Average pressure in January
Wainaku, HI

Average pressure in January - Wainaku, HI
  • Average pressure in January: 30"

The month with the highest atmospheric pressure is April (30.05").
Months with the lowest atmospheric pressure are September and October (29.97").

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Average wind speed in January
Wainaku, HI

Average wind speed in January - Wainaku, HI
  • Average wind speed in January: 7mph

The windiest month (with the highest average wind speed) is August (7.6mph).
The calmest month (with the lowest average wind speed) is October (6.7mph).

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Average humidity in January
Wainaku, HI

Average humidity in January - Wainaku, HI
  • Average humidity in January: 78%

The month with the highest relative humidity is March (80%).
Months with the lowest relative humidity are January, May, June and July (78%).

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Average rainfall in January
Wainaku, HI

Average rainfall in January - Wainaku, HI
  • Average rainfall in January: 2.72"

The wettest month (with the highest rainfall) is February (3.78").
The driest month (with the least rainfall) is June (1.1").

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Average rainfall days in January
Wainaku, HI

Average rainfall days in January - Wainaku, HI
  • Average rainfall days in January: 13.3 days

The month with the highest number of rainy days is March (22.9 days).
The month with the least rainy days is January (13.3 days).

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Average sea temperature in January
Wainaku, HI

Average sea temperature in January - Wainaku, HI
  • Average sea temperature in January: 76.5°F

The best month for swimming (with the highest average sea temperature) is September (79.3°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).

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

Average daylight in January / Average sunshine in January - Wainaku, HI
  • Average daylight in January: 11.1h

The month with the longest days is June (Average daylight: 13.3h).
The month with the shortest days is December (Average daylight: 11h).

  • Average sunshine in January: 7.9h

The month with the most sunshine is June (Average sunshine: 10.9h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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Average sunshine days in January
Wainaku, HI

Average sunshine days in January - Wainaku, HI
  • Average sunshine days in January: 12.1 days

The month with the most sunshine days is January (12.1 days).
The month with the least sunshine days is August (1.8 days).

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Average UV index in January
Wainaku, HI

Average UV index in January - Wainaku, HI
  • Average UV index in January: 5

Months with the highest UV index are May, June, July, August, September, October, November and December (UV index 6).
Months with the lowest UV index are January, February, March and April (UV index 5).

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Average cloud cover in January
Wainaku, HI

Average cloud cover in January - Wainaku, HI
  • Average cloud cover in January: 26

The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 26).

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Average visibility in January
Wainaku, HI

Average visibility in January - Wainaku, HI
  • Average visibility in January: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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