Average Sunshine in California for May
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 | 18 | 9 | 27 |
| Bishop | 15 | 10 | 25 |
| Blue Canyon | 12 | 8 | 20 |
| Eureka | 6 | 10 | 16 |
| Fresno | 18 | 8 | 26 |
| Long Beach | 10 | 13 | 23 |
| Los Angeles Airport | 10 | 11 | 21 |
| Los Angeles Downtown | 11 | 12 | 23 |
| Mount Shasta | 12 | 8 | 20 |
| Redding | 11 | 9 | 20 |
| Sacramento | 17 | 9 | 26 |
| San Diego | 8 | 11 | 19 |
| San Francisco Airport | 14 | 10 | 24 |
| Santa Maria | 14 | 10 | 24 |
| Stockton | 17 | 8 | 25 |
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 | 58 |
| Fresno | 90 |
| Los Angeles Downtown | 66 |
| Redding | 91 |
| Sacramento | 90 |
| San Diego | 59 |
| San Francisco Downtown | 72 |
Reference
National Climatic Data Center. Comparative Climatic Data.