Average temperatures, rainfall and packing tips for Montevideo, Uruguay in September
September in Montevideo is typically mild, with average daytime highs around 16°C and nights near 12°C. Temperature-wise it sits mid-range for Montevideo (the 8th warmest month).
Expect some rain: around 47 mm falls in Montevideo during September on average.
If your dates are flexible, the most comfortable months in Montevideo are usually January, February, March, April, October, November and December.
← Montevideo weather tomorrow (live)
In September, Montevideo averages a daytime high of about 16°C and a night-time low of around 12°C, based on recent historical data.
Expect some rain: around 47 mm falls in Montevideo during September on average.
September is a workable time to visit Montevideo, with mild days - just pack accordingly. If your dates are flexible, the most comfortable months in Montevideo are usually January, February, March, April, October, November and December.