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September Weather in San Ignacio, Peru

Last updated: August 27, 2025

In September, the average temperature in San Ignacio, Peru hovers around 18°C (65°F), offering a pleasant climate for various activities. Expect minimum temperatures to dip to 10°C (50°F), while highs can reach up to 27°C (80°F). During this month, precipitation averages 63 mm (2.5 in) spread over approximately 19 days, contributing to a moderate humidity level of 49%. Whether you’re exploring outdoor attractions or enjoying cozy indoor settings, the weather is bound to enhance your experience!

September Temperature in San Ignacio

In September in San Ignacio, the average temperature is 18°C (65°F). Maximums can reach 27°C (80°F) and minimums can be as low as 10°C (50°F). It's a great time to explore San Ignacio as the weather is pleasantly mild, making outdoor activities enjoyable.

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

The chart illustrates September temperature patterns in San Ignacio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Ignacio, September typically has an average temperature of 18°C (65°F), with highs reaching up to 27°C (80°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec666766666564626364666767
Data source: Temperature data for San Ignacio 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 Ignacio

In San Ignacio in September, the precipitation amount is 63 mm (2.5 in), occurring over a duration of 19 days.

September Precipitation Trends in San Ignacio

The chart displays monthly precipitation patterns in San Ignacio, 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 Ignacio, September typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec247270277200121100927463131244229
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Ignacio

In San Ignacio in September humidity is 49%. With an average temperature of 18°C (65°F), this humidity feels like a refreshing breeze, making it pleasant for traveling and exploring the sights without feeling overheated.

September Average Humidity in San Ignacio

This chart illustrates the average monthly humidity levels in San Ignacio, 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 Ignacio is approximately 49%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%85%87%88%73%51%44%49%71%77%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Ignacio

In San Ignacio 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 Ignacio.

Maximum UV Index Levels in San Ignacio for September

The chart shows the monthly maximum UV Index (UVI) for San Ignacio 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 Ignacio typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161718171513131316161515
Data source: San Ignacio 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 Ignacio Compares to Other Months

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

This table compares monthly weather conditions in San Ignacio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (67°F)247 mm (9.7 inches)82%extreme
February Weather19°C (67°F)270 mm (10.6 inches)80%extreme
March Weather19°C (67°F)277 mm (10.9 inches)85%extreme
April Weather19°C (66°F)200 mm (7.9 inches)87%extreme
May Weather18°C (66°F)121 mm (4.8 inches)88%extreme
June Weather18°C (64°F)100 mm (3.9 inches)73%extreme
July Weather17°C (62°F)92 mm (3.6 inches)51%extreme
August Weather17°C (63°F)74 mm (2.9 inches)44%extreme
September Weather18°C (65°F)63 mm (2.5 inches)49%extreme
October Weather19°C (66°F)131 mm (5.2 inches)71%extreme
November Weather19°C (67°F)244 mm (9.6 inches)77%extreme
December Weather19°C (67°F)229 mm (9.0 inches)85%extreme

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