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September Weather in San Luis, Cuba

Last updated: August 23, 2025

In September, the average temperature in San Luis, Cuba hovers around 27°C (81°F), with a pleasant range where the minimum can drop to 23°C (74°F) and the maximum can soar to 32°C (90°F). Expect about 146 mm (5.7 in) of precipitation spread across 20 days, contributing to an average humidity of 76%.

September Temperature in San Luis

In September in San Luis, the average temperature is 27°C (81°F). Maximums can reach 32°C (90°F) and minimums can be as low as 23°C (74°F). This pleasant climate makes San Luis a great destination for travelers looking to enjoy warm and comfortable weather.

September Weather in San Luis: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Luis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Luis, September typically has an average temperature of 27°C (81°F), with highs reaching up to 32°C (90°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec727474787981828281797573
Data source: Temperature data for San Luis 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 San Luis

In San Luis in September, the precipitation amount is 146 mm (5.7 in) spread over a duration of 20 days.

September Precipitation Trends in San Luis

The chart displays monthly precipitation patterns in San Luis, 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 San Luis, September typically receives around 146 mm (5.7 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec232512421891761141511461996546
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Luis

In San Luis in September, humidity is 76%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel stifling and sweat-inducing, which can be challenging for traveling.

September Average Humidity in San Luis

This chart illustrates the average monthly humidity levels in San Luis, 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 San Luis is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%77%73%72%72%71%73%74%76%78%79%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Luis

In San Luis 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 San Luis.

Maximum UV Index Levels in San Luis for September

The chart shows the monthly maximum UV Index (UVI) for San Luis 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 San Luis typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710111313131212121187
Data source: San Luis 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 San Luis Compares to Other Months

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

This table compares monthly weather conditions in San Luis, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)23 mm (0.9 inches)78%high
February Weather23°C (74°F)25 mm (1.0 inches)77%very high
March Weather24°C (75°F)12 mm (0.5 inches)73%extreme
April Weather26°C (78°F)42 mm (1.7 inches)72%extreme
May Weather26°C (79°F)189 mm (7.5 inches)72%extreme
June Weather27°C (81°F)176 mm (6.9 inches)71%extreme
July Weather28°C (82°F)114 mm (4.5 inches)73%extreme
August Weather28°C (82°F)151 mm (5.9 inches)74%extreme
September Weather27°C (81°F)146 mm (5.7 inches)76%extreme
October Weather26°C (79°F)199 mm (7.8 inches)78%extreme
November Weather24°C (76°F)65 mm (2.6 inches)79%very high
December Weather23°C (73°F)46 mm (1.8 inches)80%high

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