Weather in San Diego in October
October in San Diego is mild with average temperatures around 20.2°C (68.4°F). Light rainfall with only 15mm expected.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
25.5°C
77.9°F
Low
14.9°C
58.8°F
Precipitation
15 mm
0.6 inches
~2 rainy days
Conditions
Humidity
60%
Comparison to Adjacent Months
October is 3.2°C cooler than September.
October is 3.6°C warmer than November.