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San Diego — weather in September, water temperature

25.8°C Daytime temperatures 19.8°C Night temperatures 22 Sunny days 11.9-12.8 Sun (hours) 0 Rainy days 2.7 mm Precipitation 20.7°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 38.5°C — 5 September 2020.
The maximum night temperature 32.5°C — 6 September 2020.
The minimum daily temperature 19°C — 21 September 2017.
The minimum night temperature 13.5°C — 30 September 2013.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The warmest water 24 °C — 14 September 2015. The coldest water 17.6 °C — 20 September 2021.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 36 mm — December. Minimum precipitation 2.7 mm — September.
Wind speed, km / h
Maximum wind speed 12.3 km / h — May. Minimum wind speed 9.2 km / h — January.
Number of hours of sunshine
The maximum number of hours of sunshine per day 11.8 h. — June. The minimum number of hours of sunshine per day 7.1 h. — December.
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