WeatherArchive / Compare cities / Los Angeles vs San Diego
Los Angeles vs San Diego weather: climate comparison
Los Angeles is the warmer of the two, averaging 65°F (19°C) over the year against 63°F (17°C) in San Diego. Los Angeles is wetter, with 14.0 in (355 mm) of precipitation a year to San Diego's 11.7 in (298 mm). Below: every month side by side, from 30 years of ERA5 data (1996–2025).
- Mean temperature
- 18.6°C Los Angeles
17.0°C San Diego - Annual precipitation
- 355.0 mm Los Angeles
298.4 mm San Diego - Rainy days a year
- 32 Los Angeles
38 San Diego - Sunshine per day
- 11.0 h Los Angeles
10.9 h San Diego
Month by month
| Month | Los Angeles | San Diego |
|---|---|---|
| January | 19.1°C | 17.5°C |
| February | 19.3°C | 17.3°C |
| March | 20.9°C | 17.8°C |
| April | 23.2°C | 19.1°C |
| May | 25.1°C | 20.2°C |
| June | 27.9°C | 21.9°C |
| July | 31.2°C | 24.3°C |
| August | 32.2°C | 25.3°C |
| September | 30.8°C | 25.0°C |
| October | 27.2°C | 23.1°C |
| November | 22.9°C | 20.4°C |
| December | 18.8°C | 17.5°C |
Year at a glance
| Measure | Los Angeles | San Diego |
|---|---|---|
| Mean annual temperature | 18.6°C | 17.0°C |
| Warmest month (avg high) | Aug · 32°C | Aug · 25°C |
| Coldest month (avg low) | Dec · 7°C | Jan · 9°C |
| Annual range (warmest high − coldest low) | 25°C | 17°C |
| Annual precipitation | 355.0 mm | 298.4 mm |
| Rainy days per year | 32 | 38 |
| Wettest / driest month | Feb / Jul | Feb / Jun |
| Average sunshine per day | 11.0 h | 10.9 h |
In short: Los Angeles is the warmest overall (18.6°C mean); Los Angeles gets the most precipitation (355.0 mm a year); Los Angeles is the sunniest (11.0 h a day on average); San Diego has the smallest swing between its warmest and coldest months.
Record high 1996–2025: Los Angeles 45.7°C (2024-09-06), San Diego 36.6°C (2020-09-30). Record low: Los Angeles -1.9°C (2013-01-14), San Diego 1.8°C (2007-01-15).
Source: Open-Meteo Historical Weather API (CC BY 4.0). Values are ERA5 reanalysis model data on a ~9–25 km grid, not readings from a weather station, so a single town’s thermometer can differ by a few degrees and local showers can be missed. Monthly means of daily ERA5 values, 1996–2025, for the grid cells nearest Los Angeles (34.06, -118.24) and San Diego (32.72, -117.14).
Which months differ most?
The gap in average highs is widest in July, when Los Angeles runs 12°F / 7°C warmer, and narrowest in December (2°F / 1°C apart). The biggest rainfall difference is in February: Los Angeles gets 0.8 in (20 mm) more on average.
Add a third or fourth city, or swap in any other place, in the full comparison tool. For one city in depth, see the Los Angeles climate and San Diego climate pages.
Compare Los Angeles or San Diego with another city
Questions people ask
Is Los Angeles warmer than San Diego?
Los Angeles is warmer on average: its mean annual temperature is 65°F (19°C) against 63°F (17°C) in San Diego (ERA5, 1996–2025).
Which gets more rain, Los Angeles or San Diego?
Los Angeles, with about 14.0 in (355 mm) of precipitation a year and 32 days with at least 1 mm, compared with 11.7 in (298 mm) and 38 days in San Diego.
Which is sunnier, Los Angeles or San Diego?
Los Angeles averages more sunshine: 11.0 h a day against 10.9 h. Sunshine duration is modelled from cloud cover.
How reliable is this comparison?
Both cities use the same 30-year reanalysis, so differences are consistent. Absolute values describe a grid cell several kilometres wide and can differ by a degree or two from the airport station.