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
As Brea transitions from December to January, the average high-temperatures adjust to a still refreshing 66.7°F (19.3°C), nearly the same as the previous 64.6°F (18.1°C). Throughout the month of January, the average temperature dips to a cool 50.5°F (10.3°C) at night.Humidity
The average relative humidity in January is 52%.Rainfall
In January, the rain falls for 4.7 days. Throughout January, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 45.6 rainfall days, and 6.5" (165mm) of precipitation is accumulated.Daylight
In January, the average length of the day in Brea is 10h and 12min.On the first day of January, sunrise is at 6:56 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 5:20 pm PST.
Sunshine
January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine in Brea.UV index
In January, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The daily maximum UV index of 5 in January interprets into the following advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are January temperatures?
What is the average humidity in January?
How much does it rain in January?
How many hours of daylight does Brea have in January?
When are sunrise and sunset in January?
What are the months with the least sunshine?
How many hours of sunshine does Brea have in January?
What is the UV index reading in January?
Average temperature in January
Brea, CA
- Average high temperature in January: 66.7°F
The warmest month (with the highest average high temperature) is August (86°F).
The month with the lowest average high temperature is December (64.6°F).
- Average low temperature in January: 50.5°F
The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (49.8°F).
Average pressure in January
Brea, CA
- Average pressure in January: 30.1"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in January
Brea, CA
- Average wind speed in January: 5.3mph
The windiest month (with the highest average wind speed) is April (5.9mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).
Average humidity in January
Brea, CA
- Average humidity in January: 52%
The month with the highest relative humidity is June (62%).
The month with the lowest relative humidity is November (49%).
Average rainfall in January
Brea, CA
- Average rainfall in January: 1.06"
The wettest month (with the highest rainfall) is December (1.5").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in January
Brea, CA
- Average rainfall days in January: 4.7 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (1.3 days).
Average daylight in January /
Average sunshine in January
Brea, CA
- Average daylight in January: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January: 6h and 5min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in January
Brea, CA
- Average sunshine days in January: 25.4 days
The month with the most sunshine days is June (26.9 days).
The month with the least sunshine days is February (22.1 days).
Average UV index in January
Brea, CA
- Average UV index in January: 5
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are February, November and December (UV index 4).
Average cloud cover in January
Brea, CA
- Average cloud cover in January: 20
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in January
Brea, 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).
Brea, California, USA
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