January weather forecastEwa, HI
January
Weather in January
January, the same as December, is a moderately hot winter month in Ewa, Hawaii, with an average temperature varying between 75.9°F (24.4°C) and 70.5°F (21.4°C).Temperature
January's advent notes a subtle adjustment in average high-temperature to a still moderately hot 75.9°F (24.4°C) from December. A consistent average low-temperature of 70.5°F (21.4°C), with a minor variance from the daytime highs, is noted during the nights of January.Humidity
The months with the lowest humidity are January, April through June, August through November, with an average relative humidity of 74%.Rainfall
In Ewa, in January, during 12.3 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. Throughout the year, there are 172.2 rainfall days, and 12.72" (323mm) of precipitation is accumulated.Daylight
In Ewa, Hawaii, the average length of the day in January is 11h and 1min.On the first day of the month, sunrise is at 7:09 am and sunset at 6:01 pm. On the last day of January, in Ewa, sunrise is at 7:09 am and sunset at 6:21 pm HST.
Sunshine
The average sunshine in January is 8.7h.UV index
The months with the lowest UV index are January through May, October through December, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum UV index of 6 in January translates into the following recommendations:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Ewa, HI
- Average high temperature in January: 75.9°F
The warmest months (with the highest average high temperature) are August and September (81.5°F).
The month with the lowest average high temperature is February (74.8°F).
- Average low temperature in January: 70.5°F
The months with the highest average low temperature are August and September (76.3°F).
The coldest month (with the lowest average low temperature) is February (69.4°F).
Average pressure in January
Ewa, HI
- Average pressure in January: 30"Hg
The months with the highest atmospheric pressure are March and April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed in January
Ewa, HI
- Average wind speed in January: 9.1mph
The windiest month (with the highest average wind speed) is July (11.9mph).
The calmest months (with the lowest average wind speed) are January and October (9.1mph).
Average humidity in January
Ewa, HI
- Average humidity in January: 74%
The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are January, April, May, June, August, September, October and November (74%).
Average rainfall in January
Ewa, HI
- Average rainfall in January: 0.98"
The wettest month (with the highest rainfall) is March (1.77").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in January
Ewa, HI
- Average rainfall days in January: 12.3 days
The month with the highest number of rainy days is March (18.1 days).
The month with the least rainy days is July (11.3 days).
Average daylight in January /
Average sunshine in January
Ewa, 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 42min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days in January
Ewa, HI
- Average sunshine days in January: 13.9 days
The months with the most sunshine days are July and August (15.3 days).
The month with the least sunshine days is March (6.8 days).
Average UV index in January
Ewa, HI
- Average UV index in January: 6
The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, October, November and December (UV index 6).
Average cloud cover in January
Ewa, HI
- Average cloud cover in January: 31
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in January
Ewa, 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).
