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September Weather in San Lorenzo, Peru

Last updated: August 27, 2025

In September, the average temperature in San Lorenzo, Peru hovers around 27°C (80°F), making it a warm destination. Expect cozy nights with a minimum temperature of 21°C (70°F), while afternoons can heat up to a maximum of 35°C (95°F). Be prepared for some rain, as precipitation averages 161 mm (6.3 in) over 18 days. With an average humidity of 49%, it's a great time for outdoor adventures!

September Temperature in San Lorenzo

In September in San Lorenzo, the average temperature is 27°C (80°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 21°C (70°F). This pleasant climate makes San Lorenzo an ideal destination for travelers seeking warm weather.

September Weather in San Lorenzo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Lorenzo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Lorenzo, September typically has an average temperature of 27°C (80°F), with highs reaching up to 35°C (95°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec808180807979787980808080
Data source: Temperature data for San Lorenzo 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 San Lorenzo

In San Lorenzo in September, the precipitation amount is 161 mm (6.3 in), occurring over the span of 18 days.

September Precipitation Trends in San Lorenzo

The chart displays monthly precipitation patterns in San Lorenzo, 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 San Lorenzo, September typically receives around 161 mm (6.3 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec240190369293269200144119161184292281
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Lorenzo

In San Lorenzo in September, humidity is 49%. With an average temperature of 27°C (80°F), this humidity feels like a warm embrace, making it comfortable for exploring but occasionally causing a light sheen of sweat. Travelers may want to dress in breathable fabrics to fully enjoy the sights without feeling sticky.

September Average Humidity in San Lorenzo

This chart illustrates the average monthly humidity levels in San Lorenzo, 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 San Lorenzo is approximately 49%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%79%86%89%75%60%50%49%60%74%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Lorenzo

In San Lorenzo 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 San Lorenzo, you can check here.

Maximum UV Index Levels in San Lorenzo for September

The chart shows the monthly maximum UV Index (UVI) for San Lorenzo 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 San Lorenzo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616161312111314141413
Data source: San Lorenzo 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 San Lorenzo Compares to Other Months

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

This table compares monthly weather conditions in San Lorenzo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)240 mm (9.5 inches)75%extreme
February Weather27°C (81°F)190 mm (7.5 inches)76%extreme
March Weather26°C (80°F)369 mm (14.5 inches)79%extreme
April Weather26°C (80°F)293 mm (11.5 inches)86%extreme
May Weather26°C (80°F)269 mm (10.6 inches)88%extreme
June Weather26°C (79°F)200 mm (7.9 inches)75%extreme
July Weather26°C (78°F)144 mm (5.7 inches)60%extreme
August Weather26°C (79°F)119 mm (4.7 inches)50%extreme
September Weather27°C (80°F)161 mm (6.3 inches)49%extreme
October Weather27°C (81°F)184 mm (7.3 inches)60%extreme
November Weather27°C (81°F)292 mm (11.5 inches)74%extreme
December Weather27°C (80°F)281 mm (11.1 inches)85%extreme

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