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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Marcos's climate page.
San Marcos Temperature in May
Min Temperature
18°C (64°F)
Max Temperature
30°C (86°F)
Chance of Rain
33%
Precipitation
136 mm (5.4 in)
Rainy days
10 days
Humidity
71% *
Sunshine
227 hours *
Percentage Sunshine
54% *
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
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What to Wear in San Marcos in May
Warm weather calls for comfortable, breathable clothing in May. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in San Marcos in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our San Marcos's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Marcos climate overview or explore weather in the United States of America.
