In Guatemala City, September brings high daytime temperatures around 27°C (81°F), with nights cooling to 16°C (61°F). This month falls within the rainy season, so expect frequent rainfall.
September in Guatemala City 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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Pick a month to see the average temperature, rainfall and sunshine in Guatemala City - and find the best time to visit.
40-year average (1976-2025)
Based on our historical records, temperatures in Guatemala City typically stay consistent throughout September, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows around 17°C (63°F).
Browse day-by-day weather records for Guatemala City spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 24 years of weather observations (2002-2026), these are the most extreme conditions recorded in Guatemala City.
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).
Warm but pleasant conditions in Guatemala City in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. 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 Guatemala City 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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