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
In January, Aliso Viejo experiences a minor shift in meteorological conditions with average high-temperatures marked at a still comfortable 64.9°F (18.3°C), closely mirroring the climate in December. Nighttime temperature in Aliso Viejo experiences an average drop to a cool 50.5°F (10.3°C) in January.Humidity
In January, the average relative humidity is 59%.Rainfall
In Aliso Viejo, in January, during 5.4 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Aliso Viejo, during the entire year, the rain falls for 66.3 days and collects up to 5.67" (144mm) of precipitation.Daylight
In January, the average length of the day is 10h and 14min.On the first day of January, sunrise is at 6:55 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 5:20 pm PST.
Sunshine
In Aliso Viejo, the average sunshine in January is 6.8h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: An average maximum UV index of 4 in January leads to these recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To avoid the Sun's strongest rays, limit exposure around the mid-day period. 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Aliso Viejo in January?
What is the average humidity in January?
How many days does it rain in January?
What is the average length of the day in January in Aliso Viejo?
What time are sunrise and sunset in January?
How many hours of sunshine does Aliso Viejo have in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Aliso Viejo, CA
- Average high temperature in January: 64.9°F
The warmest month (with the highest average high temperature) is August (80.2°F).
The month with the lowest average high temperature is December (62.8°F).
- Average low temperature in January: 50.5°F
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).
Average pressure in January
Aliso Viejo, CA
- Average pressure in January: 30.09"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Aliso Viejo, CA
- Average wind speed in January: 5mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are August, September and October (4.7mph).
Average humidity in January
Aliso Viejo, CA
- Average humidity in January: 59%
The month with the highest relative humidity is June (71%).
The month with the lowest relative humidity is November (56%).
Average rainfall in January
Aliso Viejo, CA
- Average rainfall in January: 0.63"
The wettest month (with the highest rainfall) is December (0.87").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in January
Aliso Viejo, CA
- Average rainfall days in January: 5.4 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (2.6 days).
Average daylight in January /
Average sunshine in January
Aliso Viejo, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).
Average sunshine days in January
Aliso Viejo, CA
- Average sunshine days in January: 24.1 days
The month with the most sunshine days is January (24.1 days).
The month with the least sunshine days is February (19.6 days).
Average UV index in January
Aliso Viejo, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in January
Aliso Viejo, CA
- Average cloud cover in January: 22
The months with the most cloud cover are March and December (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in January
Aliso Viejo, CA
- 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).
Aliso Viejo, California, USA
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