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September Weather in San Sebastian, Venezuela

Last updated: August 28, 2025

In September, the average temperature in San Sebastian, Venezuela is a pleasant 24°C (76°F). Expect comfortable days, with temperatures varying from a minimum of 18°C (64°F) to a maximum of 32°C (90°F). However, be prepared for some rainfall, as the area receives about 145 mm (5.7 in) over 25 days. The average humidity hovers around 74%, contributing to a tropical feel.

September Temperature in San Sebastian

In September in San Sebastian, the average temperature is 24°C (76°F). Maximums can reach 32°C (90°F) and minimums can be as low as 18°C (64°F). This makes it an ideal time to explore the outdoors and enjoy various activities in San Sebastian.

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

The chart illustrates September temperature patterns in San Sebastian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Sebastian, September typically has an average temperature of 24°C (76°F), with highs reaching up to 32°C (90°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec767778797876757575767676
Data source: Temperature data for San Sebastian 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 Sebastian

In San Sebastian in September, the precipitation amount is 145 mm (5.7 in) spread over 25 days, indicating a relatively wet period.

September Precipitation Trends in San Sebastian

The chart displays monthly precipitation patterns in San Sebastian, 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 Sebastian, September typically receives around 145 mm (5.7 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec17831661221421751991451529226
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Sebastian

In San Sebastian in September, humidity is 74%. With an average temperature of 24°C (76°F), this humidity feels like a warm, heavy blanket wrapping around you, making travel a bit sticky and requiring plenty of hydration as you explore.

September Average Humidity in San Sebastian

This chart illustrates the average monthly humidity levels in San Sebastian, 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 Sebastian is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec52%51%50%48%49%70%86%83%74%58%55%54%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Sebastian

In San Sebastian 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 San Sebastian, you can check here.

Maximum UV Index Levels in San Sebastian for September

The chart shows the monthly maximum UV Index (UVI) for San Sebastian 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 Sebastian typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315151514131414141211
Data source: San Sebastian 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 Sebastian Compares to Other Months

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

This table compares monthly weather conditions in San Sebastian, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)17 mm (0.7 inches)52%extreme
February Weather25°C (77°F)8 mm (0.3 inches)51%extreme
March Weather26°C (78°F)31 mm (1.2 inches)50%extreme
April Weather26°C (79°F)66 mm (2.6 inches)48%extreme
May Weather25°C (78°F)122 mm (4.8 inches)49%extreme
June Weather24°C (76°F)142 mm (5.6 inches)70%extreme
July Weather24°C (75°F)175 mm (6.9 inches)86%extreme
August Weather24°C (75°F)199 mm (7.8 inches)83%extreme
September Weather24°C (76°F)145 mm (5.7 inches)74%extreme
October Weather24°C (76°F)152 mm (6.0 inches)58%extreme
November Weather24°C (76°F)92 mm (3.6 inches)55%extreme
December Weather25°C (76°F)26 mm (1.0 inches)54%extreme

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