Average Sunshine in California for January
Number of Sunny Days
In the table below, the average number of Sunny Days for a city in California is the total days this month when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours.
Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime.
Total Days With Sun is a sum of the Sunny plus Partly Sunny days. The rest of the days are mainly overcast, with at least 80% cloud cover. All the numbers are annual averages, made from years of weather watching.
| City | Sunny Days |
Partly Sunny Days |
Total Days With Sun |
|---|---|---|---|
| Bakersfield | 7 | 8 | 15 |
| Bishop | 11 | 8 | 19 |
| Blue Canyon | 9 | 5 | 14 |
| Eureka | 6 | 6 | 12 |
| Fresno | 5 | 7 | 12 |
| Long Beach | 12 | 8 | 20 |
| Los Angeles Airport | 12 | 8 | 20 |
| Los Angeles Downtown | 14 | 8 | 22 |
| Mount Shasta | 9 | 6 | 15 |
| Redding | 8 | 5 | 13 |
| Sacramento | 7 | 6 | 13 |
| San Diego | 12 | 7 | 19 |
| San Francisco Airport | 9 | 8 | 17 |
| Santa Maria | 13 | 7 | 20 |
| Stockton | 5 | 6 | 11 |
Amount of Sun
Here's another way to look at how much sunshine a city gets. The % Sun number measures the percentage of time between sunrise and sunset that sunshine reaches the ground. Again, these amounts are monthly averages based on many years of weather observations.
| City | % Sun |
|---|---|
| Eureka | 43 |
| Fresno | 47 |
| Los Angeles Downtown | 69 |
| Redding | 72 |
| Sacramento | 48 |
| San Diego | 72 |
| San Francisco Downtown | 56 |
Reference
National Climatic Data Center. Comparative Climatic Data.