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September Weather in Nueva Costa Rica, Mexico

Last updated: August 27, 2025

In September, the average temperature in Nueva Costa Rica, Mexico is a comfortable 23°C (74°F), with temperatures ranging from a pleasant 18°C (64°F) to a warm 30°C (87°F). During this month, expect 412 mm (16.2 in) of precipitation over 30 days, contributing to an average humidity of 80%. Enjoy the lush surroundings this climate creates!

September Temperature in Nueva Costa Rica

In September in Nueva Costa Rica, the average temperature is 23°C (74°F), with maximums reaching 30°C (87°F) and minimums dipping to as low as 18°C (64°F). This pleasant climate makes Nueva Costa Rica an ideal destination for travelers seeking a comfortable and enjoyable getaway.

September Weather in Nueva Costa Rica: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Nueva Costa Rica, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nueva Costa Rica, September typically has an average temperature of 23°C (74°F), with highs reaching up to 30°C (87°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec727375767674757474747372
Data source: Temperature data for Nueva Costa Rica 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 Nueva Costa Rica

In Nueva Costa Rica in September, the precipitation amount is 412 mm (16.2 in) over a period of 30 days.

September Precipitation Trends in Nueva Costa Rica

The chart displays monthly precipitation patterns in Nueva Costa Rica, 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 Nueva Costa Rica, September typically receives around 412 mm (16.2 inches) of precipitation spread over approximately 30 days.
JanFebMarAprMayJunJulAugSepOctNovDec7817612563962573624123285810
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nueva Costa Rica

In Nueva Costa Rica in September humidity is 80%. With an average temperature of 23°C (74°F), this humidity feels like walking through a warm, damp blanket, making travel feel sticky and muggy, where every step leaves you yearning for a cool breeze.

September Average Humidity in Nueva Costa Rica

This chart illustrates the average monthly humidity levels in Nueva Costa Rica, 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 Nueva Costa Rica is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%68%64%67%74%78%82%82%80%81%80%75%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Nueva Costa Rica

In Nueva Costa Rica 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 Nueva Costa Rica, you can check here.

Maximum UV Index Levels in Nueva Costa Rica for September

The chart shows the monthly maximum UV Index (UVI) for Nueva Costa Rica 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 Nueva Costa Rica typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131415141415141413109
Data source: Nueva Costa Rica 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 Nueva Costa Rica Compares to Other Months

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

This table compares monthly weather conditions in Nueva Costa Rica, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)7 mm (0.3 inches)70%extreme
February Weather23°C (74°F)7 mm (0.3 inches)68%extreme
March Weather24°C (75°F)17 mm (0.7 inches)64%extreme
April Weather25°C (77°F)61 mm (2.4 inches)67%extreme
May Weather24°C (76°F)255 mm (10.1 inches)74%extreme
June Weather23°C (74°F)396 mm (15.6 inches)78%extreme
July Weather24°C (75°F)257 mm (10.1 inches)81%extreme
August Weather23°C (74°F)362 mm (14.2 inches)82%extreme
September Weather23°C (74°F)412 mm (16.2 inches)80%extreme
October Weather23°C (74°F)328 mm (12.9 inches)81%extreme
November Weather23°C (73°F)58 mm (2.3 inches)80%very high
December Weather22°C (73°F)10 mm (0.4 inches)75%very high

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