San Marcos Weather in June

The climate in San Marcos during June can be summarized as hot, humid and a little damp.

June is in the summer in San Marcos and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 21°C (70°F) is normal.

On average June is the 3rd wettest month of the year in San Marcos with around 98mm 3.8 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 10 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 Marcos in June 2025.