Thinking of visiting San Marcos La Laguna in September? Expect high temperatures reaching 23°C (73°F) during the day, dropping to 15°C (59°F) at night, and be prepared for the wettest month of the year.
If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit San Marcos La Laguna. Our weather planner can help you explore destinations with more pleasant weather conditions.
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Pick a month to see the average temperature, rainfall and sunshine in San Marcos La Laguna - and find the best time to visit.
35-year average (1981-2025)
Based on our historical records, temperatures in San Marcos La Laguna typically stay consistent throughout September, with daily highs averaging around 23°C (73°F). Nights are cool, with lows around 14°C (57°F).
Browse day-by-day weather records for San Marcos La Laguna spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in San Marcos La Laguna between 2002 and 2026, these are the recorded extremes during September.
Find out more about the weather in Guatemala and which places have the best travel conditions in this month. See all of Guatemala in September →
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).
For San Marcos La Laguna in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full San Marcos La Laguna climate overview or explore weather in Guatemala.
Where to go in September - average daytime high across popular destinations.
Flores
34°C (93°F) Rio Dulce Town32°C (90°F) Lívingston32°C (90°F) Cobán27°C (81°F) Guatemala City27°C (81°F) Antigua Guatemala25°C (77°F) Quetzaltenango22°C (72°F) Panajachel23°C (73°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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