County in California

San Diego County Tempo Previsão

San Diego County weather: 24°C, encoberto. Por hora forecast, 14-day outlook, UV, air quality and the best time a visit.

☁️ 24°C now🕔 4:42 PM local📅 Best: abril, mai, junho, julho, agosto, setembro and outubro👥 3.3 million

San Diego County weather in setembro

25°
average high · low 18°C
★★★★★
ranked #6 of 12 months

One of the best months a visit San Diego County.

Average high25°C
Average low18°C
Mean21°C
Precipitação21 mm

setembro runs 4°C warmer than the annual average in San Diego County.

Tempo map for San Diego County

Animated model layers. Pick a layer a load it.

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Animated layers by Ventoy. For pin-level detail and nearby places, see the interactive map below.

Clima in San Diego County month by month

Average high, average low and total rainfall, based on three years of reanalysis data.

janfevmarabrmaijunjulagosetoutnovdezLine: average high · Bars: rainfall
MêsMáxima médiaMínima médiaPrecipitaçãoAvaliação
janeiro19°61 mm★★★★
fevereiro19°10°78 mm★★★★
março20°11°69 mm★★★★
abril20°12°12 mm★★★★★
mai20°14°7 mm★★★★★
junho22°16°3 mm★★★★★
julho24°18°0 mm★★★★★
agosto26°18°6 mm★★★★★
setembro25°18°21 mm★★★★★
outubro24°14°21 mm★★★★★
novembro21°11°53 mm★★★★
dezembro19°10°32 mm★★★★

Clima type: Mediterranean. Fonte: Open-Meteo archive (ERA5).

Melhor época para visitar San Diego County

Go in abril, mai, junho, julho, agosto, setembro and outubro. These months score highest on comfortable temperatures, low rainfall and useful daylight.

Hardest months: janeiro, fevereiro and março – expect the least comfortable mix of heat, cold or rain.

janeiro★★★★
fevereiro★★★★
março★★★★
abril★★★★★
mai★★★★★
junho★★★★★
julho★★★★★
agosto★★★★★
setembro★★★★★
outubro★★★★★
novembro★★★★
dezembro★★★★

What a pack, what a skip

Pack for the next 7 days
  • Lightweight, light-coloured clothing and a refillable water bottle
  • dom.glasses, a brimmed hat and SPF 30+
Worth avoiding
  • If your dates are flexible, avoid janeiro, fevereiro and março – historically the least comfortable months here.

How San Diego County compares com nearby places

Annual averages, and the difference against San Diego County.

PlaceDistanceAvg tempvs hereAnnual rain
San Diego0 km17°Cabout the same363 mm
San Diego International Airport4 km17°Cabout the same363 mm
Coronado Beach4 km17°Cabout the same363 mm
Anza-Borrego Desert State Park93 km24°C+6°C warmer119 mm
Orange County128 km18°C+1°C warmer394 mm

Ver a previsão de San Diego County por período

San Diego County weather – more answers

Explore San Diego County

Every topic we hold for this place, and the same topic for the places around it.

Tempo for related places

Frequently asked questions

Where is San Diego County?

San Diego County is a county in California. Its coordinates are 32.7157, -117.1611. It lies in América do Norte.

What is the weather like in San Diego County agora?

It is currently 24°C (75°F) com encoberto. Humidade is 60% and wind is 14 km/h.

When is the best time a visit San Diego County?

abril, mai, junho, julho, agosto, setembro and outubro offer the most comfortable conditions in San Diego County, which has a Mediterranean climate. janeiro, fevereiro and março are usually the hardest months for outdoor plans.

What time zone is San Diego County in?

San Diego County observes America/Los_Angeles (UTC-07:00). The hora local is 4:42 PM.

How many people live in San Diego County?

San Diego County has a population of approximately 3.3 million.

What is the nearest airport a San Diego County?

The closest airports are San Diego International Airport (SAN), 4 km away, Los Angeles International Airport (LAX), 179 km away and Harry Reid International Airport (LAS), 417 km away.

What are the top things a do in San Diego County?

Popular options include Coronado Beach, Anza-Borrego Desert State Park, Disneyland Resort, Joshua Tree National Park, Santa seg.ica State Beach and Hollywood Sign.

Related articles

Data sources and methodology

Place dataUSPOTUS Atlas dataset (us-counties) – coordinates, hierarchy and facts.
Previsão and observationsOpen-Meteo (ECMWF and national models).
Qualidade do ar and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
Clima averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
Official alertsUS National Tempo Service.
MethodScores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing – the block is simply not shown.

Last updated setembro 20, 2026 at 4:42 PM hora local. Live blocks refresh every 15 minutes; climate averages monthly.

Davil Hofile
Written byWriter at USPOTUS

Davil Hofile is a writer at USPOTUS covering breaking news, NFL updates, viral stories, entertainment, pets, and lifestyle. He specializes in transforming complex news into clear, trustworthy, and engaging articles that help readers quickly understand what's happening across the United States. His reporting follows Google's E-E-A-T guidelines, emphasizing accuracy, credible sources, and practical value for readers.

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