San Diego month by month
Plan your visit to San Diego by month. Compare weather, crowds, events, and prices across all twelve months with historical climate data.
- January
- High
- 17°C
- Low
- 8°C
- Rain
- 72 mm
January might be San Diego's least glamorous month, but it's likely the smartest time to visit on a budget. This is the coolest and wettest stretch of the year, with temperatures…
- February
- High
- 18°C
- Low
- 9°C
- Rain
- 54 mm
February is when San Diego's Pacific gray whale migration hits its peak. Roughly 20,000 of these animals pass Point Loma between mid-January and mid-March on their 10,000-mile…
- March
- High
- 17°C
- Low
- 10°C
- Rain
- 85 mm
March tends to catch visitors off guard. It's San Diego's rainiest month by a clear margin, with about 85mm falling across roughly 8 days. By Seattle or London standards, that's…
- April
- High
- 19°C
- Low
- 12°C
- Rain
- 8 mm
April might be the single clearest month to visit San Diego. The winter rain that peaked at 85mm in March drops to 8mm, roughly 2 rainy days for the entire month. And the coastal…
- May
- High
- 20°C
- Low
- 14°C
- Rain
- 6 mm
May in San Diego belongs to the marine layer. Locals call it 'May Gray,' and it means overcast skies most mornings, with low clouds that tend to sit until early afternoon before…
- June
- High
- 22°C
- Low
- 16°C
- Rain
- 3 mm
June in San Diego belongs to the marine layer. Locals call it June Gloom, and it is the single most important thing to know before booking a trip this month. Thick fog rolls in…
- July
- High
- 24°C
- Low
- 18°C
- Rain
- 5 mm
July is when San Diego's coastal fog finally lifts. After weeks of the marine layer that locals call 'June Gloom,' which can keep mornings gray and cool well into afternoon, early…
- August
- High
- 25°C
- Low
- 19°C
- Rain
- 12 mm
August is San Diego's warmest month, with afternoon highs around 25.4°C (78°F) and lows near 18.6°C (65°F). The marine layer that locals call June Gloom has fully lifted by now,…
- September
- High
- 25°C
- Low
- 18°C
- Rain
- 24 mm
September might be the best month most people overlook for a San Diego trip. The marine layer that locals call June Gloom has been gone since late July, replaced by consistently…
- October
- High
- 24°C
- Low
- 15°C
- Rain
- 18 mm
October might be San Diego's best weather month. The coastal fog that locals call 'May Gray' and 'June Gloom' cleared back in August, leaving afternoons that average 23.5°C (74°F)…
- November
- High
- 21°C
- Low
- 11°C
- Rain
- 40 mm
November might be the smartest month to visit San Diego. Summer crowds have cleared out of the Gaslamp Quarter and Mission Beach, hotel rates sit well below the…
- December
- High
- 18°C
- Low
- 9°C
- Rain
- 41 mm
December in San Diego is one of the mildest winters available anywhere in the continental United States. Daytime temperatures sit near 18°C (65°F), cooling to around 9°C (49°F)…