County in California

San Diego County Climat and Average Météo

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

🌙 20°C now🕔 2:25 AM local📅 Best: avril, mai, juin, juillet, août, septembre and octobre👥 3.3 million

Climat in San Diego County month by month

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

janfémaravrmaijuijuisepoctnovdéLine: average high · Bars: rainfall
MoisMax moyenneMin moyennePrécipitationsÉvaluation
janvier19°9°61 mm★★★★☆
février19°10°78 mm★★★★☆
mars20°11°69 mm★★★★☆
avril20°12°12 mm★★★★★
mai20°14°7 mm★★★★★
juin22°16°3 mm★★★★★
juillet24°18°0 mm★★★★★
août26°19°8 mm★★★★★
septembre25°18°15 mm★★★★★
octobre24°14°21 mm★★★★★
novembre21°11°53 mm★★★★☆
décembre19°10°32 mm★★★★☆

Climat type: Mediterranean. Source : Open-Meteo archive (ERA5).

Recent extremes in San Diego County

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

Hottest day35°Csep 8, 2026
Coldest night3°Cjan 8, 2024
Wettest day58 mmjan 22, 2024

How San Diego County compares avec 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

Meilleur moment pour visiter San Diego County

Go in avril, mai, juin, juillet, août, septembre and octobre. These months score highest on comfortable temperatures, low rainfall and useful daylight.

Hardest months: janvier, février and mars – expect the least comfortable mix of heat, cold or rain.

janvier★★★★☆
février★★★★☆
mars★★★★☆
avril★★★★★
mai★★★★★
juin★★★★★
juillet★★★★★
août★★★★★
septembre★★★★★
octobre★★★★★
novembre★★★★☆
décembre★★★★☆

What this means for San Diego County

Compared avec normal

Today is about average for octobre. The forecast high of 24°C is in line avec the 24°C typical for this month.

Pluie chance explained

Pluie is very unlikely today – plans do not need a backup.

Voyage and driving

No weather-related travel disruption is expected today. Roads and airports should run normally.

Worth knowing

Northern Hemisphere, so peak summer falls in juin à août.

Worth knowing

The gap between the warmest and coldest month averages 9°C.

What à pack, what à skip

Pack for the next 7 days
  • dim.glasses, a brimmed hat and SPF 30+
Worth avoiding
  • If your dates are flexible, avoid janvier, février and mars – historically the least comfortable months here.

Résumé

San Diego County is a county in California. San Diego County is a county in the United States. Sa population est d’environ 3.3 million.

Actuellement, il fait 20°C (68°F) in San Diego County avec ciel dégagé. La température ressentie est de 21°C. Aujourd’hui, les températures vont de 15°C à 24°C. La probabilité de précipitations est de 7%. Les conditions pour les visites obtiennent 9.6/10 – excellent — partez maintenant.

La meilleure période pour visiter San Diego County is avril, mai, juin, juillet, août, septembre and octobre. Le climat est Mediterranean. janvier, février and mars sont généralement les mois les moins confortables. août est le mois le plus chaud, avec des maximales moyennes proches de 26°C, tandis que janvier est le mois le plus froid, avec des minimales proches de 9°C.

L’aéroport principal le plus proche est San Diego International Airport (SAN), about 4 km away. Parmi les sites à proximité, citons Coronado Beach, Anza-Borrego Desert State Park, Disneyland Resort and Joshua Tree National Park.

En termes simples. Today is about average for octobre. The forecast high of 24°C is in line avec the 24°C typical for this month. The best window à be outside is roughly 9 AM à 12 PM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in San Diego County today at 9.6/10. No weather-related travel disruption is expected today. Roads and airports should run normally.

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

Quick facts about San Diego County

TypeCounty
StateCalifornia
PaysÉtats-Unis
ContinentAmérique du Nord
Coordonnées32°42′56.5″N 117°9′40″W (32.7157, -117.1611)
Population3.280.000
Heure locale2:25 AM (UTC-07:00)
Meilleurs moisavril, mai, juin, juillet, août, septembre and octobre
ClimatMediterranean

Météo map for San Diego County

Animated model layers. Pick a layer à load it.

Loading map…

Animated layers by Venty. 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.

Climat 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 Amérique du Nord.

What is the weather like in San Diego County maintenant?

It is currently 20°C (68°F) avec ciel dégagé. Humidité is 73% and wind is 6 km/h.

When is the best time à visit San Diego County?

avril, mai, juin, juillet, août, septembre and octobre offer the most comfortable conditions in San Diego County, which has a Mediterranean climate. janvier, février and mars 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 heure locale is 2:25 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 à 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 à do in San Diego County?

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

Related articles

Data sources and methodology

Place dataUSPOTUS Atlas dataset (us-counties) – coordinates, hierarchy and facts.
Prévisions and observationsOpen-Meteo (ECMWF and national models).
Qualité de l’air and pollenCopernicus CAMS via Open-Meteo. US AQI scale.
Climat averagesERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years.
Official alertsUS National Météo 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 octobre 25, 2026 at 2:25 AM heure locale. 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.

More from Davil Hofile