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September Weather in Santa Elena, Peru

Last updated: August 27, 2025

In September, the average temperature in Santa Elena, Peru is a warm 26°C (80°F), with fluctuations ranging from a comfortable 18°C (65°F) to a sizzling 39°C (102°F). Be prepared for some rain, as precipitation can reach 146 mm (5.7 in) over 20 days. Despite this, the average humidity remains a manageable 48%, making for a pleasant, albeit humid, experience overall.

September Temperature in Santa Elena

In September, in Santa Elena, the average temperature is 26°C (80°F), with maximums reaching 39°C (102°F) and minimums dropping as low as 18°C (65°F). This makes it an ideal time for travelers looking to enjoy warm weather while still having the option for cooler evenings.

September Weather in Santa Elena: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Elena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Elena, September typically has an average temperature of 26°C (80°F), with highs reaching up to 39°C (102°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec798079797978787980808080
Data source: Temperature data for Santa Elena 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 Santa Elena

In Santa Elena in September, the precipitation amount is 146 mm (5.7 in) spread over a duration of 20 days.

September Precipitation Trends in Santa Elena

The chart displays monthly precipitation patterns in Santa Elena, 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 Santa Elena, September typically receives around 146 mm (5.7 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec22422832729220014298113146192237249
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Elena

In Santa Elena in September humidity is 48%. With an average temperature of 26°C (80°F), this humidity feels like a warm and comfortable embrace, making it pleasant for traveling as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Santa Elena

This chart illustrates the average monthly humidity levels in Santa Elena, 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 Santa Elena is approximately 48%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%84%88%86%73%54%44%48%57%76%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Elena

In Santa Elena 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 Santa Elena, you can check here.

Maximum UV Index Levels in Santa Elena for September

The chart shows the monthly maximum UV Index (UVI) for Santa Elena 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 Santa Elena typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616161311111314151413
Data source: Santa Elena 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 Santa Elena Compares to Other Months

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

This table compares monthly weather conditions in Santa Elena, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)223 mm (8.8 inches)84%extreme
February Weather26°C (80°F)228 mm (9.0 inches)83%extreme
March Weather26°C (79°F)327 mm (12.9 inches)84%extreme
April Weather26°C (79°F)292 mm (11.5 inches)88%extreme
May Weather26°C (79°F)200 mm (7.9 inches)86%extreme
June Weather26°C (78°F)142 mm (5.6 inches)73%extreme
July Weather25°C (78°F)98 mm (3.9 inches)54%extreme
August Weather26°C (79°F)113 mm (4.4 inches)44%extreme
September Weather26°C (80°F)146 mm (5.7 inches)48%extreme
October Weather27°C (80°F)192 mm (7.6 inches)57%extreme
November Weather27°C (80°F)237 mm (9.3 inches)76%extreme
December Weather26°C (80°F)248 mm (9.8 inches)88%extreme

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