Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Haiku experiences an average high-temperature of a still warm 73.8°F (23.2°C) in January, subtly different from December's 74.5°F (23.6°C). Haiku reports an average low-temperature of 71.1°F (21.7°C) during the subtly cooler January nights.Humidity
January and February, with an average relative humidity of 76%, are the least humid months.Rainfall
In Haiku, during January, the rain falls for 10.6 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Haiku, during the entire year, the rain falls for 136.7 days and collects up to 13.94" (354mm) of precipitation.Snowfall
January through August, October through December are months without snowfall in Haiku.Daylight
In January, the average length of the day is 11h and 2min.On the first day of January, sunrise is at 7:02 am and sunset at 5:55 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:15 pm HST.
Sunshine
The average sunshine in January is 8.4h.UV index
The months with the lowest UV index in Haiku 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 threat to health from exposure to the Sun's UV radiation for the average person.Note: In January, the maximum UV index of 6 translates into these guidelines:
Take precautions against overexposure. Protection against sun damage is needed. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Frequently asked questions
What is the average January temperature in Haiku?
What are the least humid months in Haiku?
What is the average humidity in January in Haiku?
How much does it rain in Haiku in January?
When it does not snow in Haiku?
What is the average length of the day in January in Haiku?
When are sunrise and sunset in January in Haiku?
How long on average sun shines in January in Haiku?
What are the months with the lowest UV index in Haiku?
What is the UV index reading in January in Haiku?
Average temperature in January
Haiku, HI
- Average high temperature in January: 73.8°F
The warmest month (with the highest average high temperature) is September (79°F).
The month with the lowest average high temperature is March (72.9°F).
- Average low temperature in January: 71.1°F
The month with the highest average low temperature is September (76.1°F).
The coldest month (with the lowest average low temperature) is March (69.8°F).
Average pressure in January
Haiku, HI
- Average pressure in January: 30"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in January
Haiku, HI
- Average wind speed in January: 10.9mph
The windiest month (with the highest average wind speed) is June (14.4mph).
The calmest month (with the lowest average wind speed) is January (10.9mph).
Average humidity in January
Haiku, HI
- Average humidity in January: 76%
The months with the highest relative humidity are July and August (78%).
The months with the lowest relative humidity are January and February (76%).
Average rainfall in January
Haiku, HI
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is October (2.17").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in January
Haiku, 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).
Average snowfall days in January
Haiku, HI
- Average snowfall days in January: 0 days
The month with the highest number of snowfall days is September (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Haiku, HI
- Average daylight in January: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in January: 8h and 2min
The months with the most sunshine are June and July (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in January
Haiku, 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).
Average UV index in January
Haiku, HI
- Average UV index in January: 6
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover in January
Haiku, 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).
Average visibility in January
Haiku, HI
- Average visibility in January: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Haiku, Hawaii, USA
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