During August, San Cristóbal de Las Casas experiences high daytime temperatures of 26°C (79°F) and cooler nights around 15°C (59°F). August sits within the rainy season, so expect regular and often heavy rainfall.
August in San Cristóbal de Las Casas has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.
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Pick a month to see the average temperature, rainfall and sunshine in San Cristóbal de Las Casas - and find the best time to visit.
50-year average (1976-2025)
Based on our historical records, temperatures in San Cristóbal de Las Casas typically stay consistent throughout August, with daily highs averaging around 26°C (79°F). Nights are cool, with lows around 14°C (57°F).
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for San Cristóbal de Las Casas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 50 years of weather observations in San Cristóbal de Las Casas between 1976 and 2026, these are the recorded extremes.
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in August →
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).
Warm weather calls for comfortable, breathable clothing in August. 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). Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full San Cristóbal de Las Casas climate overview or explore weather in Mexico.
Where to go in August - average daytime high across popular destinations.
Puerto Peñasco
35°C (95°F) Los Cabos34°C (93°F) Playa del Carmen
31°C (88°F) Tulum31°C (88°F) Cancún
31°C (88°F) Puerto Vallarta
30°C (86°F) San Miguel de Allende28°C (82°F) Mexico City23°C (73°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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