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

United States

San Diego in April

🌤️ Cool season

Pleasant and mostly dry.

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

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Why April scores 9.2What goes into the score

How it works
🌡️ 20° / 14°C🌧️ 17 mm💧 dew pt 9°🍃 PM2.5 20
  • Weather comfort9.8
    • ✓Comfortable temperatures (20°C highs / 14°C lows)
    • ✓Comfortable humidity (dew point 8.9°C)
    • ✓Mostly dry (~17 mm rain)
  • Air quality7.8
    • ✓Moderate (PM2.5 ~20 µg/m³)
  • Seasonal hazards10.0
    • ·No notable seasonal hazards
  • Safety baseline7.5
    • ·Increased caution
Compare monthsPut April side by side with another month
AprOct
Score9.2 Excellent9.5 Excellent
Season🌤️ Cool season☀️ Warm dry season
High / low20° / 14°24° / 16°
Rain17 mm13 mm
Humiditydew pt 9°dew pt 10°
PM2.520 µg/m³15 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 & crowdsApril 2027

No long holidays

No long public-holiday weekends this month. School holidays aren't counted, so check those if you want to avoid family crowds.

No national public holidays in United States this month.

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 April

No major events on our calendar for April.

Coming up later

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

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

Plan this tripTickets, data and transfers for San Diego

Airport transfer Kiwitaxi

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