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Washington — weather in September, water temperature

26.1°C Daytime temperatures 18.7°C Night temperatures 14 Sunny days 11.8-13 Sun (hours) 5 Rainy days 67.8 mm Precipitation 23.6°C water temperature
Air temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The maximum daily temperature 39°C — 4 September 2015.
The maximum night temperature 28°C — 6 September 2015.
The minimum daily temperature 15.5°C — 2 September 2017.
The minimum night temperature 10°C — 23 September 2014.
water temperature
2022 2021 2020 2019 2018 2017 2016 2015 2014 2013
The warmest water 29.7 °C — 8 September 2018. The coldest water 19.3 °C — 29 September 2013.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 108.4 mm — August. Minimum precipitation 51.2 mm — January.
Wind speed, km / h
Maximum wind speed 14.9 km / h — April. Minimum wind speed 9.8 km / h — August.
Number of hours of sunshine
The maximum number of hours of sunshine per day 9.8 h. — June. The minimum number of hours of sunshine per day 5.1 h. — December.
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