San Juan Weather in June

The climate in San Juan during June can be summarized as very hot, humid and reasonably dry.

June is in the summer in San Juan and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 34°C (94°F), whilst at night 24°C (75°F) is normal.

On average June is the 3rd wettest month of the year in San Juan with around 70mm 2.8 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 4 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.8 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in San Juan in June 2025.