Monterrico Weather in September
September in Monterrico brings high temperatures, with daytime highs of 30°C (86°F) and nights around 25°C (77°F). It's also the wettest month of the year, so an umbrella is a must.
Rainfall in Monterrico in September
Monterrico is in the rainy season in September, with rain on around 24 days and an average of 343 mm (14 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.
Temperature in Monterrico in September
Daytime highs in Monterrico in September reach 30°C (86°F), with nights around 25°C (77°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights are warm at 25°C (77°F). It's worth making sure your accommodation has decent ventilation or air conditioning.September in Monterrico 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.
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 Monterrico's climate page.
Monterrico Temperature in September
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
81%
Precipitation
343 mm (14 in)
Rainy days
24 days
Daily Historical Temperatures
43-year average (1976-2025)
Based on our historical records, temperatures in Monterrico typically stay consistent throughout September, with daily highs averaging around 30°C (86°F). Nights are pleasant, with lows around 19°C (66°F).
Average temperatures in September
Daily Historical Precipitation
43-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Monterrico in September
Browse day-by-day weather records for Monterrico spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Monterrico historical weather extremes in September
Our historical data for Monterrico spans 2002 to 2025, revealing these weather extremes.
- On September 1, 2025, temperatures climbed to 33°C (91°F), marking the warmest September day on record.
- The coldest September day was on September 20, 2011, with a maximum of 25°C (77°F).
- Nighttime temperatures dropped to 15°C (59°F) on September 4, 2020, marking the coldest September night on record.
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 →
perfect weather
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What to Wear in Monterrico in September
Warm but pleasant conditions in Monterrico 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.What To Do in Monterrico 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 Monterrico's climate page.
See the full Monterrico climate overview or explore weather in Guatemala.
