September · Uruguay
Best time to visit Montevideo in September Weather, crowds & prices
Weather in Montevideo in September
Average temperature 13°C, 27 mm of rain, about 17 days with 6+ hours of sunshine and 78% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.8/10
Ranked #3 of 12 months
- Avg temp
- 13°C
- Rainfall
- 27 mm
- Humidity
- 78%
- Days with 6h+ sun
- 17
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Montevideo scores 8.8/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 13°C, 27 mm of rain, and roughly 17 days with 6+ hours of sunshine this month.
Montevideo's rambla, markets and art deco give Uruguay's capital a relaxed riverside rhythm.
September in Montevideo — one of the year's strongest windows (3rd)
September averages 13°C (56°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Expect 27 mm of rain — occasional showers rather than washed-out days — alongside about 17 days with 6+ hours of sunshine and 11.8 daylight hours.
A 8.8/10 puts this among the year's best months in Montevideo (3rd of 12); only October scores higher, at 9.6/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Montevideo in September?
- In September, Montevideo averages 13°C, 27 mm of rain, and about 17 days with 6+ hours of sunshine. Its climate-comfort score is 8.8/10.
- Is September a good time to visit Montevideo?
- September earns a 8.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Montevideo in September?
- Expect about 27 mm of rain in September. Average humidity is 78% and there are about 17 days with 6+ hours of sunshine.
Curated in Montevideo
Tickets & experiences
Things to do in Montevideo
Montevideo, Uruguay. Live activities and tours from GetYourGuide, matched to this destination.