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September Weather in La Selva, Mexico

Last updated: August 27, 2025

In La Selva, Mexico, the average temperature in September hovers around 28°C (83°F). Expect a comfortable minimum of 23°C (74°F), but be prepared for occasional peaks at a scorching 38°C (100°F). With 242 mm (9.5 in) of precipitation spread over 25 days, the air feels quite humid, averaging around 87%. Embrace the warmth and be ready for those refreshing summer showers!

September Temperature in La Selva

In September in La Selva, the average temperature is 28°C (83°F), making it a warm destination for travelers. Maximum temperatures can soar to 38°C (100°F), while the minimum can drop to a comfortable 23°C (74°F). This climate offers ideal conditions for exploring and enjoying outdoor activities.

September Weather in La Selva: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in La Selva, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In La Selva, September typically has an average temperature of 28°C (83°F), with highs reaching up to 38°C (100°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec747780838684858483817775
Data source: Temperature data for La Selva 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 La Selva

In La Selva in September, the total precipitation amount is 242 mm (9.5 in) spread over 25 days.

September Precipitation Trends in La Selva

The chart displays monthly precipitation patterns in La Selva, 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 La Selva, September typically receives around 242 mm (9.5 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec80293748872769115124228417372
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in La Selva

In La Selva in September humidity is 87%. With an average temperature of 28°C (83°F), this humidity feels like you're enveloped in a warm, sticky blanket, making outdoor activities slightly uncomfortable and travel plans require frequent breaks for hydration and respite from the heat.

September Average Humidity in La Selva

This chart illustrates the average monthly humidity levels in La Selva, 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 La Selva is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%76%66%59%64%69%82%87%87%88%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in La Selva

In La Selva in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in La Selva.

Maximum UV Index Levels in La Selva for September

The chart shows the monthly maximum UV Index (UVI) for La Selva 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 La Selva typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec910121312131312121198
Data source: La Selva 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 La Selva Compares to Other Months

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

This table compares monthly weather conditions in La Selva, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)80 mm (3.1 inches)83%very high
February Weather25°C (77°F)29 mm (1.1 inches)76%very high
March Weather26°C (80°F)37 mm (1.5 inches)66%extreme
April Weather29°C (84°F)48 mm (1.9 inches)59%extreme
May Weather30°C (86°F)87 mm (3.4 inches)64%extreme
June Weather29°C (84°F)276 mm (10.9 inches)69%extreme
July Weather29°C (85°F)91 mm (3.6 inches)82%extreme
August Weather29°C (85°F)151 mm (6.0 inches)87%extreme
September Weather28°C (83°F)242 mm (9.5 inches)87%extreme
October Weather27°C (81°F)284 mm (11.2 inches)88%extreme
November Weather25°C (77°F)173 mm (6.8 inches)88%very high
December Weather24°C (75°F)72 mm (2.8 inches)88%very high

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