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Best time to visit San Diego
Month-by-month weather, crowds, prices, and festival calendar — so you know exactly when to book.
Best time to visit San Diego, United States
Month-by-month breakdown of weather, crowds, prices, and seasonal highlights.
| Month | Score | Weather | Crowds | Prices | Highlights |
|---|---|---|---|---|---|
| January | 14-19°C, mild with occasional rain showers | low | low |
| |
| February | 14-19°C, mild with scattered rain | low | low |
⚠ Occasional strong storm systems can occur. | |
| March | 15-20°C, mostly sunny with infrequent showers | moderate | moderate |
| |
| April | 16-21°C, sunny and mild | moderate | moderate |
| |
| May | 17-22°C, sunny and warm | high | high |
⚠ May Gray can bring morning marine layer. | |
| June | 18-23°C, often overcast mornings (June Gloom) | peak | peak |
⚠ June Gloom can persist through midday. | |
| July | 20-25°C, sunny afternoons after morning clouds | peak | peak |
⚠ Marine layer usually burns off by afternoon. | |
| August | 21-26°C, warm and sunny | peak | peak |
⚠ Can be the warmest month, with occasional heat inland. | |
| September | 20-25°C, warm and sunny | high | high |
| |
| October | 18-23°C, pleasant and sunny | moderate | moderate |
| |
| November | 15-21°C, mild with increasing chance of rain | low | low |
⚠ Rainy season begins, though typically mild. | |
| December | 14-19°C, mild with rain possible | moderate | moderate |
⚠ Christmas Boat Parade of Lights is a major event. |
Annual events worth timing your trip around
Gray whales migrate south along the coast, offering excellent viewing opportunities.
Spectacular display of decorated boats in San Diego Bay.
Dozens of restaurants offer special prix-fixe menus.
Showcasing independent films and documentaries.
One of the largest county fairs in the US, with rides, food, and entertainment.
Fireworks displays across the city, especially over the bay.
Catch a Major League Baseball game at Petco Park.
The world's largest comic book and pop culture convention (tickets sell out far in advance).
Insider timing tips
- •The 'June Gloom' and 'May Gray' phenomena mean coastal mornings can be overcast and cool, even when inland is warm and sunny.
- •Ocean temperatures are warmest in late August and September, making these months ideal for swimming despite higher accommodation prices.
- •While winter is the 'rainy season,' San Diego typically experiences mild, scattered showers rather than prolonged downpours, making it a viable, less crowded travel time.
- •The shoulder seasons (March-April and September-October) offer the best balance of pleasant weather, fewer crowds, and moderate prices.
- •San Diego's unique microclimates mean beach weather can differ significantly from inland areas, especially during summer heatwaves.
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