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San Juan — weather in September, water temperature

30.9°C Daytime temperatures 26.1°C Night temperatures 11 Sunny days 12-12.5 Sun (hours) 4 Rainy days 99.3 mm Precipitation 29.1°C water temperature
Air temperature
2017 2016 2015 2014 2013
The maximum daily temperature 34.3°C — 24 September 2013.
The maximum night temperature 28°C — 5 September 2015.
The minimum daily temperature 25°C — 20 September 2017.
The minimum night temperature 23°C — 27 September 2015.
water temperature
2017 2016 2015 2014 2013
The warmest water 29.8 °C — 25 September 2016. The coldest water 28.1 °C — 28 September 2017.
Sunny, cloudy and gloomy days
Precipitation, mm
Maximum precipitation 2264.3 mm — January. Minimum precipitation 31.6 mm — June.
Wind speed, km / h
Maximum wind speed 20.8 km / h — August. Minimum wind speed 14.2 km / h — October.
Number of hours of sunshine
The maximum number of hours of sunshine per day 8.7 h. — June. The minimum number of hours of sunshine per day 5.6 h. — December.
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