nomadseason

September Weather in San Jeronimo, Peru

Last updated: August 27, 2025

In September, the average temperature in San Jeronimo, Peru hovers around 10°C (50°F). You can expect a minimum of 1°C (34°F) and a maximum of 20°C (68°F). This month sees around 42 mm (1.6 in) of precipitation spread over 16 days, contributing to an average humidity level of 52%.

September Temperature in San Jeronimo

In September in San Jeronimo, the average temperature is 10°C (50°F). Maximum can reach 20°C (68°F) and minimum can be as low as 1°C (34°F). Be prepared for a mix of mild days and chilly nights when traveling during this time.

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

The chart illustrates September temperature patterns in San Jeronimo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Jeronimo, September typically has an average temperature of 10°C (50°F), with highs reaching up to 20°C (68°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec515150504948474850515252
Data source: Temperature data for San Jeronimo generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in San Jeronimo

In San Jeronimo in September, the total precipitation amount is 42 mm (1.6 in) spread over 16 days.

September Precipitation Trends in San Jeronimo

The chart displays monthly precipitation patterns in San Jeronimo, 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 Jeronimo, September typically receives around 42 mm (1.6 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec19123220497341614204295160202
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in San Jeronimo

In San Jeronimo in September, humidity is 52%. With an average temperature of 10°C (50°F), this humidity feels like a brisk chill in the air, making it perfect for exploring the sights without the discomfort of excessive heat.

September Average Humidity in San Jeronimo

This chart illustrates the average monthly humidity levels in San Jeronimo, 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 Jeronimo is approximately 52%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%92%90%85%70%55%44%52%65%81%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Jeronimo

In San Jeronimo 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 San Jeronimo.

Maximum UV Index Levels in San Jeronimo for September

The chart shows the monthly maximum UV Index (UVI) for San Jeronimo 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 Jeronimo typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec181818171311131416171818
Data source: San Jeronimo 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 Jeronimo Compares to Other Months

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

This table compares monthly weather conditions in San Jeronimo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)191 mm (7.5 inches)93%extreme
February Weather10°C (51°F)232 mm (9.1 inches)92%extreme
March Weather10°C (51°F)204 mm (8.0 inches)92%extreme
April Weather10°C (50°F)97 mm (3.8 inches)90%extreme
May Weather9°C (49°F)34 mm (1.3 inches)85%extreme
June Weather9°C (48°F)16 mm (0.6 inches)70%extreme
July Weather8°C (47°F)14 mm (0.5 inches)54%extreme
August Weather9°C (48°F)20 mm (0.8 inches)44%extreme
September Weather10°C (50°F)42 mm (1.6 inches)52%extreme
October Weather11°C (51°F)95 mm (3.7 inches)65%extreme
November Weather11°C (52°F)160 mm (6.3 inches)81%extreme
December Weather11°C (52°F)202 mm (8.0 inches)89%extreme

Compare San Jeronimo's Climate with Cities Worldwide