September · Guatemala
Best time to visit Lake Atitlán in September Weather, crowds & prices
Weather in Lake Atitlán in September
Average temperature 23°C, 433 mm of rain, about 19 days with 6+ hours of sunshine and 87% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
5.4/10
Ranked #10 of 12 months
- Avg temp
- 23°C
- Rainfall
- 433 mm
- Humidity
- 87%
- Days with 6h+ sun
- 19
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Lake Atitlán scores 5.4/10 for nature and wildlife travel - ranked #10 of 12. Expect around 23°C, 433 mm of rain, and roughly 19 days with 6+ hours of sunshine this month.
Lake Atitlán fills a volcanic caldera ringed by Maya villages and three volcanoes.
September in Lake Atitlán — middling scores, decent value
Trail conditions at 23°C (74°F) favour early starts and shaded routes in September; midday is for water breaks, not for exposed climbs.
Expect monsoon-level rainfall at 433 mm: only about 19 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 5.4/10 on the same scale — 10th of 12 months, versus 9.6/10 for the best month here.
Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, February is materially better in Lake Atitlán — 4.2 points higher on the same scale.
Frequently asked
- What is the weather like in Lake Atitlán in September?
- In September, Lake Atitlán averages 23°C, 433 mm of rain, and about 19 days with 6+ hours of sunshine. Its climate-comfort score is 5.4/10.
- Is September a good time to visit Lake Atitlán?
- September earns a 5.4/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Lake Atitlán in September?
- Expect about 433 mm of rain in September. Average humidity is 87% and there are about 19 days with 6+ hours of sunshine.
Curated in Lake Atitlán
Tickets & experiences
Things to do in Lake Atitlán
Lake Atitlán, Guatemala. Live activities and tours from GetYourGuide, matched to this destination.