September Weather in Montevideo, Peru

Last updated: August 27, 2025

In September, the average temperature in Montevideo, Peru hovers around 14°C (57°F), making it a pleasant time to visit. You can expect temperatures to range from a chilly 5°C (40°F) to a comfortable 24°C (75°F). Be prepared for about 60 mm (2.4 in) of precipitation spread over 14 days, contributing to an average humidity of 42%.

September Temperature in Montevideo

In September in Montevideo, the average temperature is 14°C (57°F). Maximum can reach 24°C (75°F) and minimum can be as low as 5°C (40°F). It's a great time to explore Montevideo comfortably while enjoying a mix of mild and warmer days.

September Weather in Montevideo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Montevideo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montevideo, September typically has an average temperature of 14°C (57°F), with highs reaching up to 24°C (75°F) and lows dropping to around 5°C (40°F).

Data source: Temperature data for Montevideo generated using information from the Copernicus Climate Change Service.

September Precipitation in Montevideo

In Montevideo in September, the precipitation amount is 60 mm (2.4 in) spread over 14 days.

September Precipitation Trends in Montevideo

The chart displays monthly precipitation patterns in Montevideo, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Montevideo, September typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Montevideo

In Montevideo in September humidity is 42%. With average temperature 14°C (57°F), this humidity feels like a mild and refreshing breeze, making it pleasant for exploring the area without feeling overly hot or sticky.

September Average Humidity in Montevideo

This chart illustrates the average monthly humidity levels in Montevideo, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Montevideo is approximately 42%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Montevideo

In Montevideo in September, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Montevideo.

Maximum UV Index Levels in Montevideo for September

The chart shows the monthly maximum UV Index (UVI) for Montevideo in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Montevideo typically reaches 16, which falls under the extreme exposure category.

Data source: Montevideo September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Montevideo Compares to Other Months

Weather in Montevideo varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Montevideo, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Montevideo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (59°F)	211 mm (8.3 inches)	83%	extreme
February Weather	15°C (59°F)	239 mm (9.4 inches)	81%	extreme
March Weather	15°C (58°F)	269 mm (10.6 inches)	88%	extreme
April Weather	14°C (58°F)	169 mm (6.7 inches)	85%	extreme
May Weather	14°C (58°F)	108 mm (4.3 inches)	78%	extreme
June Weather	14°C (57°F)	62 mm (2.5 inches)	62%	extreme
July Weather	13°C (55°F)	44 mm (1.7 inches)	44%	extreme
August Weather	13°C (56°F)	44 mm (1.7 inches)	38%	extreme
September Weather	14°C (57°F)	60 mm (2.4 inches)	42%	extreme
October Weather	14°C (58°F)	195 mm (7.7 inches)	58%	extreme
November Weather	15°C (59°F)	261 mm (10.3 inches)	69%	extreme
December Weather	15°C (59°F)	284 mm (11.2 inches)	82%	extreme