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September Weather in Castillo, Dominican Republic

Last updated: August 23, 2025

In September, the average temperature in Castillo, Dominican Republic hovers around 27°C (80°F), providing a warm backdrop for various activities. Temperatures can dip to a minimum of 22°C (71°F) and peak at a scorching 34°C (94°F). While enjoying the warmth, expect about 154 mm (6.1 in) of precipitation over 24 days, accompanied by an average humidity of 73%.

September Temperature in Castillo

In September in Castillo, the average temperature is 27°C (80°F), with maximums reaching up to 34°C (94°F) and minimums dropping as low as 22°C (71°F). This pleasant weather makes Castillo an ideal destination for travelers seeking a comfortable climate.

September Weather in Castillo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Castillo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castillo, September typically has an average temperature of 27°C (80°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec747475777980808080797775
Data source: Temperature data for Castillo 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 Castillo

In Castillo in September, the precipitation amount totals 154 mm (6.1 in) spread over 24 days.

September Precipitation Trends in Castillo

The chart displays monthly precipitation patterns in Castillo, 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 Castillo, September typically receives around 154 mm (6.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec4351988513111314014815414212864
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Castillo

In Castillo in September humidity is 73%. With an average temperature of 27°C (80°F), this humidity feels like a warm, enveloping blanket that can make traveling feel sticky and slightly uncomfortable, prompting frequent breaks in the shade and plenty of hydration.

September Average Humidity in Castillo

This chart illustrates the average monthly humidity levels in Castillo, 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 Castillo 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 Castillo

In Castillo 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 Castillo.

Maximum UV Index Levels in Castillo for September

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

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

This table compares monthly weather conditions in Castillo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)43 mm (1.7 inches)65%very high
February Weather24°C (75°F)51 mm (2.0 inches)63%extreme
March Weather24°C (75°F)98 mm (3.9 inches)59%extreme
April Weather25°C (77°F)85 mm (3.3 inches)58%extreme
May Weather26°C (79°F)131 mm (5.2 inches)57%extreme
June Weather27°C (80°F)113 mm (4.5 inches)57%extreme
July Weather27°C (80°F)140 mm (5.5 inches)63%extreme
August Weather27°C (81°F)148 mm (5.8 inches)71%extreme
September Weather27°C (80°F)154 mm (6.1 inches)73%extreme
October Weather26°C (79°F)142 mm (5.6 inches)72%extreme
November Weather25°C (77°F)128 mm (5.1 inches)72%very high
December Weather24°C (75°F)64 mm (2.5 inches)69%very high

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