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San Marcos Weather in August

During August, San Marcos experiences high daytime temperatures of 30°C (86°F) and cooler nights around 17°C (63°F). Rainfall is low, averaging just 1 mm (0.04 in) for the month.

Rainfall in San Marcos in August

Records from the past 30 years suggest around a single day of rain, with 1 mm (0.04 in) average for the month. If rain does fall, it tends to be very light and barely worth getting out an umbrella for.

Temperature in San Marcos in August

San Marcos has excellent weather in August, with days reaching 30°C (86°F) and nights cooling to 17°C (63°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, it is the warmest month of the year.

Sunshine in San Marcos in August

The month enjoys around 295 hours of sunshine, creating mostly sunny days with good weather conditions.

August in San Marcos has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.

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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 August

Min TemperatureMin Temperature 17°C (63°F)  
Max TemperatureMax Temperature 30°C (86°F)  
Chance of RainChance of Rain 3%  
PrecipitationPrecipitation 1 mm (0.04 in)  
Rainy daysRainy days a single day  
HumidityHumidity 74% *  
SunshineSunshine 295 hours *  
Percentage SunshinePercentage Sunshine 71% *  
* Data from: San Diego, the United States of America (47 KM, 29 Miles).

Best Places in the United States of America in August

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 August →

Map not visible? Whoops sorry! Please refresh the page.
Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in San Marcos in August

Warm temperatures in August make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. With minimal rainfall expected, you can leave the rain gear at home. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in San Marcos in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
10/10
Cycling
8/10
Walking
8/10
Barbeque
10/10
Camping
10/10
Outdoor sports
8/10

Select a Month

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.

More climate data for San Marcos