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September Weather in Juan Santiago, Dominican Republic

Last updated: August 23, 2025

In Juan Santiago, Dominican Republic, the average temperature in September hovers around 24°C (76°F). Expect a comfortable range, with minimums dipping to 18°C (65°F) and maximums soaring up to 33°C (92°F). Be prepared for some rain, as the area receives about 101 mm (4.0 in) of precipitation over 17 days, contributing to an average humidity of 73%.

September Temperature in Juan Santiago

In September in Juan Santiago, the average temperature is 24°C (76°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 18°C (65°F). It's the perfect time for travelers to enjoy pleasant weather while exploring all that Juan Santiago has to offer.

September Weather in Juan Santiago: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Juan Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Juan Santiago, September typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (92°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec707172737475767775747371
Data source: Temperature data for Juan Santiago 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 Juan Santiago

In Juan Santiago in September, the total precipitation amount is 101 mm (4.0 in) over the course of 17 days.

September Precipitation Trends in Juan Santiago

The chart displays monthly precipitation patterns in Juan Santiago, 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 Juan Santiago, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec17199411273415473101877420
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Juan Santiago

In Juan Santiago in September humidity is 73%. With an average temperature of 24°C (76°F), this humidity feels like a warm and sticky embrace, making travel slightly uncomfortable as the air thickens around you, prompting you to seek shade and stay hydrated.

September Average Humidity in Juan Santiago

This chart illustrates the average monthly humidity levels in Juan Santiago, 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 Juan Santiago 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 Juan Santiago

In Juan Santiago 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 Juan Santiago.

Maximum UV Index Levels in Juan Santiago for September

The chart shows the monthly maximum UV Index (UVI) for Juan Santiago 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 Juan Santiago typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131414131313131198
Data source: Juan Santiago 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 Juan Santiago Compares to Other Months

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

This table compares monthly weather conditions in Juan Santiago, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (71°F)16 mm (0.6 inches)65%very high
February Weather22°C (71°F)18 mm (0.7 inches)63%extreme
March Weather22°C (72°F)94 mm (3.7 inches)59%extreme
April Weather23°C (73°F)112 mm (4.4 inches)58%extreme
May Weather23°C (74°F)73 mm (2.9 inches)57%extreme
June Weather24°C (76°F)41 mm (1.6 inches)57%extreme
July Weather25°C (76°F)54 mm (2.1 inches)63%extreme
August Weather25°C (77°F)73 mm (2.9 inches)71%extreme
September Weather24°C (76°F)101 mm (4.0 inches)73%extreme
October Weather23°C (74°F)87 mm (3.4 inches)72%extreme
November Weather23°C (73°F)74 mm (2.9 inches)72%very high
December Weather22°C (72°F)20 mm (0.8 inches)69%very high

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