County in California

San Diego County Vejr Prognose

San Diego County weather: 23°C, klart. Hver time forecast, 14-day outlook, UV, air quality and the best time og visit.

🌙 23°C now🕔 3:38 AM local📅 Best: april, maj, juni, juli, august, september and oktober👥 3.3 million

San Diego County weather in marts

20°
average high · low 11°C
★★★★☆
ranked #10 of 12 months

A good month og visit San Diego County.

Average high20°C
Average low11°C
Mean15°C
Regnfall69 mm

marts runs 2°C cooler than the annual average in San Diego County.

Compare med april.

Vejr map for San Diego County

Animated model layers. Pick a layer og load it.

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

Klima in San Diego County month by month

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

janfebmaraprmajjunjulaugsepoktnovdecLine: average high · Bars: rainfall
MånedAvg highAvg lowRegnfallRating
januar19°9°61 mm★★★★☆
februar19°10°78 mm★★★★☆
marts20°11°69 mm★★★★☆
april20°12°12 mm★★★★★
maj20°14°7 mm★★★★★
juni22°16°3 mm★★★★★
juli24°18°0 mm★★★★★
august26°19°8 mm★★★★★
september25°18°15 mm★★★★★
oktober24°14°21 mm★★★★★
november21°11°53 mm★★★★☆
december19°10°32 mm★★★★☆

Klima type: Mediterranean. Kilde: Open-Meteo archive (ERA5).

Bedste rejsetid San Diego County

Go in april, maj, juni, juli, august, september and oktober. These months score highest on comfortable temperatures, low rainfall and useful daylight.

Hardest months: januar, februar and marts - expect the least comfortable mix of heat, cold or rain.

januar★★★★☆
februar★★★★☆
marts★★★★☆
april★★★★★
maj★★★★★
juni★★★★★
juli★★★★★
august★★★★★
september★★★★★
oktober★★★★★
november★★★★☆
december★★★★☆

What og pack, what og skip

Pack for the next 7 days
  • Lightweight, light-coloured clothing and a refillable water bottle
  • sønglasses, a brimmed hat and SPF 30+
Worth avoiding
  • Avoid long hikes after mid-morning; start at dawn or leave it for a cooler day.
  • If your dates are flexible, avoid januar, februar and marts - historically the least comfortable months here.

How San Diego County compares med nearby places

Annual averages, and the difference against San Diego County.

PlaceDistanceAvg tempvs hereAnnual rain
San Diego0 km17°Cabout the same359 mm
San Diego International Airport4 km17°Cabout the same359 mm
Coronado Beach4 km17°Cabout the same359 mm
Anza-Borrego Desert State Park93 km24°C+6°C warmer118 mm
Orange County128 km18°C+1°C warmer385 mm

Se prognosen for San Diego County efter tidsinterval

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.

Vejr 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 Nordamerika.

What is the weather like in San Diego County lige nu?

It is currently 23°C (74°F) med klart. Luftfugtighed is 83% and wind is 5 km/h.

When is the best time og visit San Diego County?

april, maj, juni, juli, august, september and oktober offer the most comfortable conditions in San Diego County, which has a Mediterranean climate. januar, februar and marts 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 local time is 3:38 AM.

How many people live in San Diego County?

San Diego County has a population of approximately 3.3 million.

What is the nearest airport og 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 og do in San Diego County?

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

Related articles

Data sources and methodology

Place dataUSPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts.
Prognose and observationsOpen-Meteo (ECMWF and national models).
Luftkvalitet and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
Klima averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
Official alertsUS National Vejr 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 oktober 5, 2026 at 3:38 AM local time. 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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