No—California is not always sunny. The "endless sunshine" stereotype applies mainly to **Southern California coastal basins** (LA, San Diego, Orange County) in **summer and fall**.
| Region | Reality |
|---|---|
| SoCal Coast (LA, SD) | Mediterranean: dry summers, wet winters (Dec–Mar). "June Gloom" marine layer = overcast mornings. |
| Central Valley | Hot, dry summers; foggy, cool winters (tule fog). |
| Bay Area / NorCal Coast | Foggy summers (marine layer), wet winters. SF: 100+ fog days/yr. |
| Sierra Nevada | Heavy snow (winter), thunderstorms (summer). 400+ in snowpack. |
| North Coast / Redwoods | Temperate rainforest — 60–100+ in rain/yr. |
| Deserts (Mojave, Colorado) | Sunniest — but winter nights freezing, monsoon storms Aug–Sep. |