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
With the onset of January, a modest change to a still agreeable 69.4°F (20.8°C) from December's 70.5°F (21.4°C) is noted in high-temperature. In Milolii, a slight decrease from the daytime peak is noted during the month of January, with an average low-temperature of 65.1°F (18.4°C).Humidity
The average relative humidity in January is 75%.Rainfall
January is the month with the least rainfall. Rain falls for 10.8 days and accumulates 0.75" (19mm) of precipitation.Daylight
The average length of the day in January is 11h and 8min.On the first day of the month, sunrise is at 6:57 am and sunset at 5:57 pm. On the last day of January, sunrise is at 6:58 am and sunset at 6:15 pm HST.
Sunshine
In Milolii, the average sunshine in January 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 medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: In January, the maximum UV index of 5 translates into these guidelines:
Take precautions - Protection against sunburn is recommended. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in January?
What is the average humidity in January?
What is the driest month?
How much does it rain in January?
What is the average length of the day in January?
What time are sunrise and sunset in January?
How long on average sun shines in January?
When is the lowest UV index in Milolii?
What is the UV index reading in January?
Average temperature in January
Milolii, 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
Milolii, 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
Milolii, 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
Milolii, 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
Milolii, 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
Milolii, 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
Milolii, 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
Milolii, 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
Milolii, 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
Milolii, 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
Milolii, 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).
Milolii, Hawaii, USA
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