San Diego - Recent September Temperatures and Rainfall

The numbers here describe what the September weather in San Diego, California was like for every year since 2010. A series of tables gives September data by year for temperature and precipitation.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many really hot days occurred each September. Then there's information on how much rain actually landed this month during recent years, as well as how often San Diego had wet weather.

The climate data come from weather measurements made at San Diego's International Airport.

Temperature Weather iconTemperature

September temperature averages by year in San Diego
High °F Low °F Year High °C Low °C
76 66 2023 24 19
82 69 2022 28 21
78 67 2021 25 20
82 67 2020 28 19
78 67 2019 26 19
77 67 2018 25 20
79 67 2017 26 19
78 66 2016 26 19
83 71 2015 28 22
81 70 2014 27 21
77 66 2013 25 19
81 69 2012 27 20
74 64 2011 23 18
74 63 2010 24 17
Number of days in September when the temperature in San Diego rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2023 29 0
2022 30 3
2021 30 0
2020 30 5
2019 30 0
2018 29 0
2017 30 2
2016 30 3
2015 30 3
2014 30 2
2013 29 0
2012 30 2
2011 28 1
2010 27 1

Rainy Weather iconRain

This table gives the total precipitation that fell on San Diego during September in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.3 millimeters) or more.

Total rainfall for September in San Diego
Days Year Inches Milli­metres
2 2023 0.1 1
2 2022 0.7 17
1 2021 0.5 13
0 2020 0.0 0
3 2019 0.1 3
0 2018 0.0 0
3 2017 0.1 2
3 2016 0.3 8
2 2015 1.2 31
0 2014 0.0 0
0 2013 0.0 0
0 2012 0.0 0
2 2011 0.1 3
1 2010 0.0 1
Reference

Jay Lawrimore. 2016. Global Summary of the Month, Version 1.0. NOAA National Centers for Environmental Information. 

San Diego - Recent Years
San Diego - Extremes
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