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September Weather in Tres Unidos, Peru

Last updated: August 27, 2025

In Tres Unidos, Peru, the average temperature in September hovers around 24°C (76°F), offering a pleasant climate to explore. Daily temperatures can range from a cool 18°C (64°F) to a warm 33°C (92°F). Visitors should prepare for potential rain, with 143 mm (5.6 in) of precipitation expected over approximately 19 days. The average humidity is a comfortable 42%, making it an ideal time to enjoy all that Tres Unidos has to offer!

September Temperature in Tres Unidos

In September in Tres Unidos, the average temperature is 24°C (76°F), with maximums reaching 33°C (92°F) and minimums dipping to as low as 18°C (64°F). This mild climate makes Tres Unidos an ideal destination for travelers seeking comfortable weather and pleasant outdoor activities.

September Weather in Tres Unidos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Tres Unidos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tres Unidos, September typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (92°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec767675757574737576767777
Data source: Temperature data for Tres Unidos generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Tres Unidos

In Tres Unidos in September, the total precipitation amount is 143 mm (5.6 in) spread over 19 days.

September Precipitation Trends in Tres Unidos

The chart displays monthly precipitation patterns in Tres Unidos, 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 Tres Unidos, September typically receives around 143 mm (5.6 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec222191316266222153126103143220249182
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tres Unidos

In Tres Unidos in September humidity is 42%. With an average temperature of 24°C (76°F), this humidity feels like a pleasant embrace, making it ideal for exploring the local sights without feeling overly sticky or uncomfortable.

September Average Humidity in Tres Unidos

This chart illustrates the average monthly humidity levels in Tres Unidos, 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 Tres Unidos is approximately 42%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%76%81%86%86%70%47%37%42%62%76%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tres Unidos

In Tres Unidos in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Tres Unidos, you can check here.

Maximum UV Index Levels in Tres Unidos for September

The chart shows the monthly maximum UV Index (UVI) for Tres Unidos 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 Tres Unidos typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616161312111214151414
Data source: Tres Unidos 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 Tres Unidos Compares to Other Months

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

This table compares monthly weather conditions in Tres Unidos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)222 mm (8.7 inches)80%extreme
February Weather25°C (77°F)191 mm (7.5 inches)76%extreme
March Weather24°C (76°F)316 mm (12.4 inches)81%extreme
April Weather24°C (76°F)266 mm (10.5 inches)86%extreme
May Weather24°C (75°F)222 mm (8.7 inches)86%extreme
June Weather24°C (75°F)153 mm (6.0 inches)70%extreme
July Weather23°C (74°F)126 mm (4.9 inches)47%extreme
August Weather24°C (75°F)103 mm (4.1 inches)37%extreme
September Weather24°C (76°F)143 mm (5.6 inches)42%extreme
October Weather25°C (76°F)220 mm (8.6 inches)62%extreme
November Weather25°C (77°F)249 mm (9.8 inches)76%extreme
December Weather25°C (77°F)182 mm (7.2 inches)89%extreme

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