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
During January, San Carlos records an average high-temperature of a still mild 56.8°F (13.8°C), marking a slight divergence from December's 55.9°F (13.3°C). Throughout January, San Carlos registers a consistent average low-temperature of 46°F (7.8°C).Humidity
The average relative humidity in January is 73%.Rainfall
In San Carlos, in January, during 9.9 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. In San Carlos, during the entire year, the rain falls for 77.5 days and collects up to 11.22" (285mm) of precipitation.Daylight
The average length of the day in January in San Carlos is 9h and 56min.On the first day of January, sunrise is at 7:23 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 5:31 pm PST.
Sunshine
The average sunshine in January in San Carlos is 6.2h.UV index
In January, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index, 4 in January, converts into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
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?
How much does it rain in January?
How many hours of daylight does San Carlos have in January?
When are sunrise and sunset in January in San Carlos?
How long on average sun shines in January?
What is the UV index reading in January?
Average temperature in January
San Carlos, CA
- Average high temperature in January: 56.8°F
The warmest month (with the highest average high temperature) is August (73°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in January: 46°F
The month with the highest average low temperature is September (56.7°F).
The coldest month (with the lowest average low temperature) is January (46°F).
Average pressure in January
San Carlos, CA
- Average pressure in January: 30.13"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in January
San Carlos, CA
- Average wind speed in January: 5.8mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).
Average humidity in January
San Carlos, CA
- Average humidity in January: 73%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).
Average rainfall in January
San Carlos, CA
- Average rainfall in January: 1.69"
The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in January
San Carlos, CA
- Average rainfall days in January: 9.9 days
The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is July (1.8 days).
Average daylight in January /
Average sunshine in January
San Carlos, CA
- Average daylight in January: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January: 6h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in January
San Carlos, CA
- Average sunshine days in January: 20.2 days
The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is March (16.3 days).
Average UV index in January
San Carlos, CA
- Average UV index in January: 4
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in January
San Carlos, CA
- Average cloud cover in January: 32
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 9).
Average visibility in January
San Carlos, 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).
San Carlos, California, USA
Weather forecast for your location
2. Allow the app to use your location