San Marcos Weather in May

May in San Marcos sees daytime temperatures around 30°C (86°F) and lows of 18°C (64°F) at night. As the wettest month of the year, keep in mind that rainfall is at its highest.

Rainfall in San Marcos in May

Since this is the rainiest month of the year, it's a good idea to carry an umbrella just in case. Climate statistics over the past 30 years suggest around 10 days of rain, with 136 mm (5.4 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in San Marcos in May

May in San Marcos brings very high temperatures, with highs of 30°C (86°F) and nights around 18°C (64°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in San Marcos in May

The days are predominantly sunny, with an estimated total of around 227 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. March, April and November typically offer the best weather for San Marcos.