Guatemala City Weather in September
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.
Rainfall in Guatemala City in September
Guatemala City is in the rainy season in September, with rain on around 26 days and an average of 274 mm (11 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.
Temperature in Guatemala City in September
In September, Guatemala City gets high temperatures, with highs of 27°C (81°F). Nights cool to around 16°C (61°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 16°C (61°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Guatemala City in September
The city usually sees around 160 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Guatemala, check out our Guatemala City's climate page.
Guatemala City Temperature in September
Min Temperature
16°C (61°F)
Max Temperature
27°C (81°F)
Chance of Rain
86%
Precipitation
274 mm (11 in)
Rainy days
26 days
Humidity
84%
Sunshine
160 hours
Percentage Sunshine
Daily Historical Temperatures
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).
Average temperatures in September
Historical weather for Guatemala City in September
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.
Guatemala City historical weather extremes in September
Based on 23 years of weather observations (2002-2025), these are the most extreme conditions recorded in Guatemala City.
- On September 22, 2021, temperatures climbed to 33°C (91°F), marking the warmest September day on record.
- Guatemala City experienced its chilliest September day on September 3, 2010, reaching only 18°C (64°F).
- Guatemala City registered its coldest September night on September 11, 2018, with temperatures dropping to 14°C (57°F).
Best Places in Guatemala in 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 →
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What to Wear in Guatemala City in September
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.What To Do in Guatemala City in September
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 Guatemala, check out our Guatemala City's climate page.
Temperature Rainfall Sunshine Humidity
See the full Guatemala City climate overview or explore weather in Guatemala.
