SeasonScore
San Diego, United States
Photo: William Toti · CC BY 2.0

United States

San Diego in October

☀️ Warm dry season

Pleasant and mostly dry.

🎒 Pack: sunglasses & hat

Best months: Oct (9.5), Mar (9.4), May (9.4)

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Why October scores 9.5What goes into the score

How it works
🌡️ 24° / 16°C🌧️ 13 mm💧 dew pt 10°🍃 PM2.5 15
  • Weather comfort10.0
    • ✓Comfortable temperatures (24°C highs / 16°C lows)
    • ✓Comfortable humidity (dew point 9.8°C)
    • ✓Mostly dry (~13 mm rain)
  • Air quality8.5
    • ✓Good (within WHO guideline) (PM2.5 ~15 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline7.5
    • ·Increased caution
Compare monthsPut October side by side with another month
OctMar
Score9.5 Excellent9.4 Excellent
Season☀️ Warm dry season🌤️ Cool season
High / low24° / 16°19° / 13°
Rain13 mm37 mm
Humiditydew pt 10°dew pt 8°
PM2.515 µg/m³12 µg/m³

Typical-month data: NASA POWER (MERRA-2 reanalysis) 2015–2024 (modelled, not a forecast). Temperatures: San Diego Airport weather-station normals. Rainfall: San Diego International Airport weather-station normals (national met service).

Holidays & crowdsOctober 2027

Long weekend

There's at least one long weekend. Domestic travel picks up and popular spots get busier over those days.

  • Columbus Day 9–11 Oct · 3 days off in a row

National holidays only; regional holidays and school breaks aren't included. Source: holidays (open-source public-holiday calendar).

Explore San DiegoEvents, sights, food & souvenirs

Check event dates locally

Southern California coastal city near the Mexican border, known for mild weather year-round, beaches, Balboa Park and its zoo.

Events in October

No major events on our calendar for October.

Coming up later

Gray whale migrationDate variesUsually December to March

Gray whales pass the coast on their migration to and from Baja California lagoons.

Why go: Whale-watching boats run from the harbour.

Where: Off the coast

San Diego County FairDate variesUsually June to early July

A large county fair with rides, food and concerts.

Why go: Busy on weekends.

Where: Del Mar Fairgrounds

Comic-Con InternationalDate variesUsually July

One of the world's largest comics and pop culture conventions.

Why go: Hotels fill up and prices rise; badges sell out early.

Where: San Diego Convention Center

Plan this tripTickets, data and transfers for San Diego

Airport transfer Kiwitaxi

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