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September Weather in Rio Grande, Dominican Republic

Last updated: August 23, 2025

In September, the average temperature in Rio Grande, Dominican Republic soars to a pleasant 27°C (82°F). You can expect a minimum of 23°C (74°F) and a maximum of 33°C (93°F), making it an ideal time for outdoor activities. However, prepare for some rain, as the region sees an average precipitation of 112 mm (4.4 in) over 17 days. With an average humidity of 73%, be ready to embrace the tropical vibes!

September Temperature in Rio Grande

In September in Rio Grande, the average temperature is 27°C (82°F), with maximums reaching up to 33°C (93°F) and minimums dropping as low as 23°C (74°F). It's an ideal time for travelers seeking warm weather and comfortable conditions.

September Weather in Rio Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rio Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Grande, September typically has an average temperature of 27°C (82°F), with highs reaching up to 33°C (93°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec757575777981818281807977
Data source: Temperature data for Rio Grande 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 Rio Grande

In Rio Grande in September, the precipitation amount is 112 mm (4.4 in) spread out over 17 days.

September Precipitation Trends in Rio Grande

The chart displays monthly precipitation patterns in Rio Grande, 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 Rio Grande, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec65461165653314448112727359
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rio Grande

In Rio Grande in September, humidity is 73%. With an average temperature of 27°C (82°F), this humidity feels like you're walking through a warm, thick blanket, making travel feel sticky and requiring frequent breaks to stay refreshed.

September Average Humidity in Rio Grande

This chart illustrates the average monthly humidity levels in Rio Grande, 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 Rio Grande is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%63%59%58%57%57%63%71%73%72%72%69%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rio Grande

In Rio Grande 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 Rio Grande.

Maximum UV Index Levels in Rio Grande for September

The chart shows the monthly maximum UV Index (UVI) for Rio Grande 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 Rio Grande typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131313121313121198
Data source: Rio Grande 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 Rio Grande Compares to Other Months

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

This table compares monthly weather conditions in Rio Grande, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)65 mm (2.6 inches)65%very high
February Weather24°C (75°F)46 mm (1.8 inches)63%extreme
March Weather24°C (76°F)116 mm (4.6 inches)59%extreme
April Weather25°C (78°F)56 mm (2.2 inches)58%extreme
May Weather26°C (80°F)53 mm (2.1 inches)57%extreme
June Weather27°C (81°F)31 mm (1.2 inches)57%extreme
July Weather27°C (82°F)44 mm (1.7 inches)63%extreme
August Weather28°C (82°F)48 mm (1.9 inches)71%extreme
September Weather27°C (82°F)112 mm (4.4 inches)73%extreme
October Weather27°C (80°F)72 mm (2.8 inches)72%extreme
November Weather26°C (79°F)73 mm (2.9 inches)72%very high
December Weather25°C (77°F)59 mm (2.3 inches)69%very high

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