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September Weather in Santo Domingo, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santo Domingo, Mexico is a pleasant 19°C (67°F). You can expect a minimum temperature of 8°C (47°F) and a maximum reaching up to 30°C (87°F). With an average humidity of 81%, the air can feel quite moist. Be prepared for some rain, as you might encounter around 80 mm (3.2 in) of precipitation spread over 12 days.

September Temperature in Santo Domingo

In September in Santo Domingo, the average temperature is 19°C (67°F), with maximums reaching 30°C (87°F) and minimums dropping as low as 8°C (47°F). This makes it an ideal time for travelers to enjoy a comfortable climate while exploring the attractions of Santo Domingo.

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 19°C (67°F), with highs reaching up to 30°C (87°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec545964687270686966645955
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 80 mm (3.2 in) over a span of 12 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 80 mm (3.2 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec128773159664180361016
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 81%. With an average temperature of 19°C (67°F), this humidity feels like a heavy blanket enveloping you, making travel somewhat uncomfortable as sweat clings to your skin and the air feels thick, prompting you to seek shade and hydration frequently.

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 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%69%65%64%75%78%67%64%82%86%87%87%
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 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 Santo Domingo, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec8111315151414141412108
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 Weather12°C (54°F)12 mm (0.5 inches)75%very high
February Weather15°C (59°F)8 mm (0.3 inches)69%extreme
March Weather18°C (65°F)7 mm (0.3 inches)65%extreme
April Weather20°C (69°F)7 mm (0.3 inches)64%extreme
May Weather22°C (72°F)31 mm (1.2 inches)75%extreme
June Weather21°C (70°F)59 mm (2.3 inches)78%extreme
July Weather20°C (69°F)66 mm (2.6 inches)67%extreme
August Weather21°C (69°F)41 mm (1.6 inches)64%extreme
September Weather19°C (67°F)80 mm (3.2 inches)81%extreme
October Weather18°C (65°F)36 mm (1.4 inches)85%extreme
November Weather15°C (60°F)10 mm (0.4 inches)87%very high
December Weather13°C (55°F)16 mm (0.6 inches)87%very high

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