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 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
Welcoming January, Naalehu notes an average high-temperature of a still pleasant 69.4°F (20.8°C), nearly consistent with December's 70.5°F (21.4°C). Consistently, Naalehu reports average nighttime temperatures of 65.1°F (18.4°C) during January, a marginal step down from its daytime highs.Humidity
In January, the average relative humidity is 75%.Rainfall
The month with the least rainfall is January, when the rain falls for 10.8 days and typically collects 0.75" (19mm) of precipitation.Daylight
The average length of the day in January in Naalehu is 11h and 8min.On the first day of January in Naalehu, sunrise is at 6:55 am and sunset at 5:56 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:14 pm HST.
Sunshine
In January, the average sunshine is 9h.UV index
January through April, November and December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 5 in January leads to these recommendations:
Exercise prevention - Protecting skin and eyes from harm is required. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What is the usual temperature for Naalehu in January?
What is the average humidity in January in Naalehu?
What is the driest month in Naalehu?
How much does it rain in Naalehu in January?
What is the average length of the day in January in Naalehu?
When are sunrise and sunset in January in Naalehu?
How long on average sun shines in January in Naalehu?
What are the months with the lowest UV index in Naalehu?
How high is the UV index in January in Naalehu?
Average temperature in January
Naalehu, HI
- Average high temperature in January: 69.4°F
The warmest months (with the highest average high temperature) are August and October (73.2°F).
The month with the lowest average high temperature is February (68.9°F).
- Average low temperature in January: 65.1°F
The month with the highest average low temperature is October (70°F).
The coldest month (with the lowest average low temperature) is March (64.8°F).
Average pressure in January
Naalehu, HI
- Average pressure in January: 29.99"Hg
The month with the highest atmospheric pressure is April (30.04"Hg).
The months with the lowest atmospheric pressure are September and October (29.96"Hg).
Average wind speed in January
Naalehu, HI
- Average wind speed in January: 5.5mph
The windiest month (with the highest average wind speed) is May (6.3mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity in January
Naalehu, HI
- Average humidity in January: 75%
The months with the highest relative humidity are June, July, August and September (81%).
The month with the lowest relative humidity is February (73%).
Average rainfall in January
Naalehu, HI
- Average rainfall in January: 0.75"
The wettest month (with the highest rainfall) is September (1.81").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in January
Naalehu, HI
- Average rainfall days in January: 10.8 days
The month with the highest number of rainy days is August (21.8 days).
The month with the least rainy days is January (10.8 days).
Average daylight in January /
Average sunshine in January
Naalehu, HI
- Average daylight in January: 11h and 1min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in January: 9h and 0min
The month with the most sunshine is May (Average sunshine: 10h and 42min).
The months with the least sunshine are November and December (Average sunshine: 7h and 18min).
Average sunshine days in January
Naalehu, HI
- Average sunshine days in January: 12.7 days
The month with the most sunshine days is January (12.7 days).
The month with the least sunshine days is May (3.2 days).
Average UV index in January
Naalehu, HI
- Average UV index in January: 5
The months with the highest UV index are May, June, July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 5).
Average cloud cover in January
Naalehu, HI
- Average cloud cover in January: 15
The month with the most cloud cover is June (Cloud cover 31).
The month with the least cloud cover is January (Cloud cover 15).
Average visibility in January
Naalehu, 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).
Naalehu, Hawaii, USA
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