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September Weather in Santo Domingo, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santo Domingo, Mexico hovers around 27°C (81°F), creating a warm and inviting climate. The temperatures can range from a pleasant 21°C (71°F) to a sweltering 36°C (98°F). Expect rainy days as well, with 162 mm (6.4 in) of precipitation spread across 23 days, contributing to an average humidity level of 82%.

September Temperature in Santo Domingo

In September in Santo Domingo, the average temperature is 27°C (81°F), with maximums reaching up to 36°C (98°F) and minimums dropping as low as 21°C (71°F). This pleasant climate makes it a perfect destination for outdoor adventures and relaxation.

September Weather in Santo Domingo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santo Domingo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Domingo, September typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (98°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec747779838481828281797675
Data source: Temperature data for Santo Domingo 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 Santo Domingo

In Santo Domingo in September, the precipitation amount is 162 mm (6.4 in) over a period of 23 days.

September Precipitation Trends in Santo Domingo

The chart displays monthly precipitation patterns in Santo Domingo, 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 Santo Domingo, September typically receives around 162 mm (6.4 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec311716396120173891621446336
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santo Domingo

In Santo Domingo in September humidity is 82%. With an average temperature of 27°C (81°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting, and leaving you longing for the relief of air-conditioned spaces during your travels.

September Average Humidity in Santo Domingo

This chart illustrates the average monthly humidity levels in Santo Domingo, 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 Santo Domingo is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%78%67%62%62%63%66%73%82%86%87%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santo Domingo

In Santo Domingo in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Santo Domingo.

Maximum UV Index Levels in Santo Domingo for September

The chart shows the monthly maximum UV Index (UVI) for Santo Domingo 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 Santo Domingo typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131413141313131298
Data source: Santo Domingo 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 Santo Domingo Compares to Other Months

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

This table compares monthly weather conditions in Santo Domingo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)31 mm (1.2 inches)85%very high
February Weather25°C (77°F)17 mm (0.7 inches)78%extreme
March Weather26°C (79°F)16 mm (0.6 inches)67%extreme
April Weather28°C (83°F)39 mm (1.5 inches)62%extreme
May Weather29°C (84°F)61 mm (2.4 inches)62%extreme
June Weather27°C (81°F)201 mm (7.9 inches)63%extreme
July Weather28°C (82°F)73 mm (2.9 inches)66%extreme
August Weather28°C (82°F)89 mm (3.5 inches)73%extreme
September Weather27°C (81°F)162 mm (6.4 inches)82%extreme
October Weather26°C (79°F)144 mm (5.7 inches)86%extreme
November Weather24°C (76°F)63 mm (2.5 inches)87%very high
December Weather24°C (75°F)36 mm (1.4 inches)87%very high

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