When to go · San Diego, United States
Best time to visit San Diego
The sweet spot is September, October and July — averages 22°C, only 1 rainy days, moderate crowds.
Year-round. September and October are warmest at the beach; "May Gray" and "June Gloom" bring morning clouds to the coast.
Mediterranean and remarkably stable: 18–25°C year-round, rain mostly December to March. The ocean stays cool; mornings can be grey in early summer.
The short answer
22°C · 1 rainy days · mid season
20°C · 2 rainy days · mid season
22°C · 0 rainy days · high season
Hardest months: March and December. averages 15°C, 6 rainy days, moderate crowds.
Month by month
| Month | Avg temp | Rain days | Crowds | Verdict |
|---|---|---|---|---|
| January | 14°C | 6d | low | Mild |
| February | 14°C | 6d | low | Mild |
| March | 15°C | 6d | mid | Mild |
| April | 16°C | 3d | mid | Comfortable |
| May | 18°C | 1d | mid | Comfortable |
| June | 19°C | 0d | high | Great weather, peak crowds |
| July | 22°C | 0d | high | Great weather, peak crowds |
| August | 23°C | 0d | high | Great weather, peak crowds |
| September | 22°C | 1d | mid | Comfortable |
| October | 20°C | 2d | mid | Comfortable |
| November | 17°C | 3d | low | Comfortable |
| December | 14°C | 5d | mid | Mild |
Verdicts are read off the three columns to their left — temperature distance from 21°C first, then rainfall, with crowds breaking ties. Averages, so any given week can differ.
If you'd rather go cheap than perfect
January, February and November are low season in San Diego — thinner crowds, and the months where accommodation is easiest to book late. Budget travellers already work to about $70–120 a day here; low season is where the accommodation share of that goes furthest.
Book the month you picked
Fares move with the same seasons as the crowds — the quiet months above are usually the cheap ones to fly.