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San Juan — weather by month, water temperature

The air temperature by month
The average maximum daily temperature — 30.5°C in September. Average maximum night temperature — 26°C in September. The average minimum daily temperature — 27°C in February. The average minimum night temperature — 23.1°C in February.
The water temperature by month
Average maximum temperature of the water — 29.2°C fixed in October. The average minimum temperature of the water — 26.3°C fixed in March.
Precipitation, mm
Maximum precipitation — 1243.6 mm It was recorded in January. Minimum precipitation — 43.1 mm It was recorded in April.
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