County in California

San Diego County Klima and Average Vejr

Klima of San Diego County: average temperatures, rainfall and seasons month by month.

☁️ 19°C now🕔 3:42 AM local📅 Best: april, maj, juni, juli, august, september and oktober👥 3.3 million

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°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°18°6 mm★★★★★
september25°18°21 mm★★★★★
oktober24°14°21 mm★★★★★
november21°11°53 mm★★★★
december19°10°32 mm★★★★

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

Recent extremes in San Diego County

Højest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.

Hottest day34°Csep 8, 2024
Coldest night3°Cjan 8, 2024
Wettest day58 mmjan 22, 2024

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 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

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 this means for San Diego County

Compared med normal

Today is about average for september. The forecast high of 24°C is in line med the 25°C typical for this month.

Regn chance explained

Regn is very unlikely today - plans do not need a backup.

Rejser and driving

Sigtbarhed is down og 0,5 km - use low beams and leave extra following distance.

Worth knowing

Northern Hemisphere, so peak summer falls in juni og august.

Worth knowing

The gap between the warmest and coldest month averages 8°C.

What og pack, what og skip

Pack for the next 7 days
  • sønglasses, a brimmed hat and SPF 30+
Worth avoiding
  • If your dates are flexible, avoid januar, februar and marts - historically the least comfortable months here.

Resumé

San Diego County is a county in California. San Diego County is a county in the United States. Der bor omkring 3.3 million.

Lige nu er det 19°C (67°F) in San Diego County med overskyet. Det føles som 21°C. I dag ligger temperaturen mellem 19°C og 24°C. Sandsynligheden for nedbør er 2%. Sightseeing conditions score 7.4/10 - gode forhold.

Det bedste tidspunkt at besøge San Diego County is april, maj, juni, juli, august, september and oktober. Klimaet er Mediterranean. januar, februar and marts tend og be the least comfortable months. august is the warmest month med average highs near 26°C, while januar is the coldest med lows near 9°C.

The closest major airport is San Diego International Airport (SAN), about 4 km away. Nearby highlights include Coronado Beach, Anza-Borrego Desert State Park, Disneyland Resort and Joshua Tree National Park.

Kort sagt. Today is about average for september. The forecast high of 24°C is in line med the 25°C typical for this month. The best window og be outside is roughly 6 PM og 9 PM, when temperature, rain chance and wind line up best. outdoors is the strongest bet in San Diego County today at 9.8/10. Sigtbarhed is down og 0,5 km - use low beams and leave extra following distance.

Compiled from this page's own data: atlas facts plus live Open-Meteo readings.

Quick facts about San Diego County

TypeCounty
StateCalifornia
LandUSA
KontinentNordamerika
Koordinater32°42′56.5″N 117°9′40″W (32.7157, -117.1611)
Befolkning3.280.000
Lokal tid3:42 AM (UTC-07:00)
Best monthsapril, maj, juni, juli, august, september and oktober
KlimaMediterranean

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.

Explore San Diego County

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

Klima 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 19°C (67°F) med overskyet. Luftfugtighed is 89% 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 3:42 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 september 15, 2026 at 3:42 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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