| Month | Period of Day* | Long Beach | Los Angeles Airport | Downtown Los Angeles |
|---|---|---|---|---|
| Annually | Morning | 79% | 79% | 75% |
| Afternoon | 53% | 64% | 53% | |
| January | Morning | 74% | 70% | 63% |
| Afternoon | 51% | 59% | 50% | |
| February | Morning | 77% | 75% | 71% |
| Afternoon | 52% | 62% | 52% | |
| March | Morning | 78% | 78% | 74% |
| Afternoon | 53% | 65% | 52% | |
| April | Morning | 79% | 80% | 78% |
| Afternoon | 50% | 64% | 54% | |
| May | Morning | 80% | 83% | 81% |
| Afternoon | 54% | 66% | 55% | |
| June | Morning | 82% | 85% | 85% |
| Afternoon | 55% | 67% | 56% | |
| Month | Period of Day* | Long Beach | Los Angeles Airport | Downtown Los Angeles |
| July | Morning | 82% | 86% | 84% |
| Afternoon | 52% | 68% | 53% | |
| August | Morning | 81% | 85% | 84% |
| Afternoon | 53% | 68% | 55% | |
| September | Morning | 82% | 83% | 78% |
| Afternoon | 54% | 66% | 54% | |
| October | Morning | 80% | 78% | 76% |
| Afternoon | 53% | 64% | 56% | |
| November | Morning | 78% | 72% | 61% |
| Afternoon | 53% | 61% | 49% | |
| December | Morning | 77% | 69% | 62% |
| Afternoon | 52% | 60% | 50% |
* Period of Day: Morning was measured at 4 a.m.; Afternoon at 4 p.m.
Source: Western Regional Climate Center
