January weather forecastSan Juan Capistrano, CA
January
Weather in January
January, the same as December, is another comfortable winter month in San Juan Capistrano, California, with an average temperature fluctuating between 64.2°F (17.9°C) and 51.3°F (10.7°C).Temperature
January notes an average high-temperature of a still comfortable 64.2°F (17.9°C), subtly differing from December's 62.4°F (16.9°C). San Juan Capistrano records an average nighttime low of 51.3°F (10.7°C) in January.Humidity
In San Juan Capistrano, the average relative humidity in January is 61%.Rainfall
In San Juan Capistrano, in January, during 5.6 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. Throughout the year, there are 69 rainfall days, and 9.09" (231mm) of precipitation is accumulated.Daylight
The average length of the day in January is 10h and 14min.On the first day of the month, sunrise is at 6:54 am and sunset at 4:53 pm. On the last day of January, in San Juan Capistrano, sunrise is at 6:47 am and sunset at 5:20 pm PST.
Sunshine
In San Juan Capistrano, the average sunshine in January is 6.7h.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 estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: During January, 4 as the daily maximum UV index converts into the following advice:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
San Juan Capistrano, CA
- Average high temperature in January: 64.2°F
The warmest month (with the highest average high temperature) is September (77.4°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in January: 51.3°F
The month with the highest average low temperature is August (63.3°F).
The coldest month (with the lowest average low temperature) is February (50°F).
Average pressure in January
San Juan Capistrano, 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
San Juan Capistrano, CA
- Average wind speed in January: 5.2mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest months (with the lowest average wind speed) are August, September and October (5mph).
Average humidity in January
San Juan Capistrano, CA
- Average humidity in January: 61%
The month with the highest relative humidity is June (74%).
The month with the lowest relative humidity is November (59%).
Average rainfall in January
San Juan Capistrano, CA
- Average rainfall in January: 1.14"
The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in January
San Juan Capistrano, CA
- Average rainfall days in January: 5.6 days
The month with the highest number of rainy days is March (7.8 days).
The month with the least rainy days is June (3 days).
Average daylight in January /
Average sunshine in January
San Juan Capistrano, CA
- Average daylight in January: 10h and 12min
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 42min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in January
San Juan Capistrano, CA
- Average sunshine days in January: 24.7 days
The month with the most sunshine days is January (24.7 days).
The month with the least sunshine days is May (19.5 days).
Average UV index in January
San Juan Capistrano, CA
- Average UV index in January: 4
The months with the highest UV index are 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
San Juan Capistrano, CA
- Average cloud cover in January: 24
The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in January
San Juan Capistrano, 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).
