September · Peru
Best time to visit Lake Titicaca in September Weather, crowds & prices
Weather in Lake Titicaca in September
Average temperature 9°C, 16 mm of rain, about 30 days with 6+ hours of sunshine and 50% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.2/10
Ranked #5 of 12 months
- Avg temp
- 9°C
- Rainfall
- 16 mm
- Humidity
- 50%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Lake Titicaca scores 9.2/10 for nature and wildlife travel - an above-average month (#5 of 12). Expect around 9°C, 16 mm of rain, and roughly 30 days with 6+ hours of sunshine this month.
Lake Titicaca floats reed islands and Aymara villages on the world's highest navigable lake. Best window: late spring through early autumn.
September is one of the strongest months in Lake Titicaca (5th)
September averages 9°C (48°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.
Expect 16 mm of rain — occasional showers rather than washed-out days — alongside about 30 days with 6+ hours of sunshine and 11.9 daylight hours.
A 9.2/10 puts this among the year's best months in Lake Titicaca (5th of 12); only November scores higher, at 9.6/10.
Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, footwear you can get muddy.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Lake Titicaca in September?
- In September, Lake Titicaca averages 9°C, 16 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 9.2/10.
- Is September a good time to visit Lake Titicaca?
- September earns a 9.2/10 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 Titicaca in September?
- Expect about 16 mm of rain in September. Average humidity is 50% and there are about 30 days with 6+ hours of sunshine.
Curated in Lake Titicaca
Tickets & experiences
Things to do in Lake Titicaca
Lake Titicaca, Peru. Live activities and tours from GetYourGuide, matched to this destination.