San Diego Weather Forecast
San Diego weather: 70°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
San Diego is a city in California. San Diego is known for Beaches, zoo and Balboa Park. It has a population of about 1.4 million.
Right now it is 70°F (21°C) in San Diego with clear. It feels like 76°F. Today runs from 67°F to 86°F. Chance of precipitation is 1%. Sightseeing conditions score 9.8/10 - excellent - go now.
The best time to visit San Diego is April, May, June, July, August, September and October. The climate is Mediterranean. January, February and March tend to be the least comfortable months. August is the warmest month with average highs near 78°F, while January is the coldest with lows near 48°F.
The closest major airport is San Diego International Airport (SAN), about 2 mi away. Nearby highlights include Coronado Beach, Anza-Borrego Desert State Park, Disneyland Resort and Joshua Tree National Park.
In plain terms. Today is warmer than average for August. The forecast high of 86°F is 8.3°F above the 78°F typical for this month. The best window to be outside is roughly 6 PM to 9 PM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in San Diego today at 9.8/10. 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.
Weather in San Diego right now
Source: Open-Meteo. Updated 6:29 AM, Aug 21 local time.
See the San Diego forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for San Diego
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Fri, Aug 21 | 🌥️ Fog | 86° / 67° | 1% | 8 mph | 8 |
| Sat, Aug 22 | 🌥️ Fog | 84° / 67° | 1% | 9 mph | 8 |
| Sun, Aug 23 | ☁️ Overcast | 85° / 74° | 1% | 10 mph | 8 |
| Mon, Aug 24 | 🌤️ Mainly clear | 86° / 75° | 1% | 10 mph | 8 |
| Tue, Aug 25 | ☀️ Clear sky | 86° / 76° | 1% | 9 mph | 8 |
| Wed, Aug 26 | ☀️ Clear sky | 77° / 73° | 2% | 10 mph | 8 |
| Thu, Aug 27 | ⛅ Partly cloudy | 79° / 73° | 1% | 13 mph | 8 |
| Fri, Aug 28 | 🌤️ Mainly clear | 80° / 73° | 1% | 8 mph | 8 |
| Sat, Aug 29 | ☁️ Overcast | 83° / 73° | 1% | 9 mph | 8 |
| Sun, Aug 30 | ☁️ Overcast | 82° / 74° | 0% | 9 mph | 8 |
| Mon, Aug 31 | ⛅ Partly cloudy | 77° / 71° | 0% | 9 mph | 8 |
| Tue, Sep 1 | ☁️ Overcast | 75° / 70° | 0% | 10 mph | 8 |
| Wed, Sep 2 | ☁️ Overcast | 79° / 69° | 10% | 10 mph | 8 |
| Thu, Sep 3 | ☁️ Overcast | 84° / 73° | 13% | 8 mph | 7 |
| Fri, Sep 4 | 🌦️ Light drizzle | 83° / 75° | 6% · 0,0 in | 10 mph | 6 |
| Sat, Sep 5 | ☀️ Clear sky | -- / -- | 17% | -- | — |
Climate in San Diego month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 65° | 48° | 2,4 in | ★★★★☆ |
| February | 65° | 50° | 3,1 in | ★★★★☆ |
| March | 67° | 52° | 2,7 in | ★★★★☆ |
| April | 67° | 54° | 0,5 in | ★★★★★ |
| May | 69° | 58° | 0,3 in | ★★★★★ |
| June | 72° | 61° | 0,1 in | ★★★★★ |
| July | 76° | 64° | 0,0 in | ★★★★★ |
| August | 78° | 65° | 0,6 in | ★★★★★ |
| September | 76° | 64° | 0,8 in | ★★★★★ |
| October | 75° | 58° | 0,8 in | ★★★★★ |
| November | 69° | 52° | 2,1 in | ★★★★☆ |
| December | 66° | 49° | 1,3 in | ★★★★☆ |
Climate type: Mediterranean. Source: Open-Meteo archive (ERA5).
Weather map for San Diego
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in San Diego
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit San Diego
Go in April, May, June, July, August, September and October. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and March - expect the least comfortable mix of heat, cold or rain.
Weather by airport in San Diego
1 airports mapped in this atlas
Weather by beach in San Diego
1 beaches mapped in this atlas
Explore San Diego
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is San Diego?
San Diego is a city in California. Its coordinates are 32.7157, -117.1611. It lies in North America.
What is the weather like in San Diego right now?
It is currently 70°F (21°C) with clear. Humidity is 92% and wind is 3 mph.
When is the best time to visit San Diego?
April, May, June, July, August, September and October offer the most comfortable conditions in San Diego, which has a Mediterranean climate. January, February and March are usually the hardest months for outdoor plans.
What time zone is San Diego in?
San Diego observes America/Los_Angeles (UTC-07:00). The local time is 6:29 AM.
How many people live in San Diego?
San Diego has a population of approximately 1.4 million.
What is the nearest airport to San Diego?
The closest airports are San Diego International Airport (SAN), 2 mi away, Los Angeles International Airport (LAX), 111 mi away and Harry Reid International Airport (LAS), 259 mi away.
What are the top things to do in San Diego?
Popular options include Coronado Beach, Anza-Borrego Desert State Park, Disneyland Resort, Joshua Tree National Park, Santa Monica State Beach and Hollywood Sign.
What places are in San Diego?
San Diego covers 2 places in this atlas, including San Diego International Airport and Coronado Beach.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (cities-us) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, 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 August 21, 2026 at 6:29 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
