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September Weather in San Nicolas, Aruba

Last updated: August 22, 2025

In September, the average temperature in San Nicolas, Aruba reaches a warm 28°C (83°F), with daily highs of 30°C (86°F) and lows around 25°C (78°F). Expect 51 mm (2.0 in) of precipitation spread over about 10 days, keeping the atmosphere crisp and refreshing. The average humidity sits at a comfortable 81%, adding to the tropical feel of this vibrant locale.

September Temperature in San Nicolas

In September in San Nicolas, the average temperature is 28°C (83°F), with maximums reaching 30°C (86°F) and minimums dropping to as low as 25°C (78°F). This pleasant climate makes it an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in San Nicolas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Nicolas, September typically has an average temperature of 28°C (83°F), with highs reaching up to 30°C (86°F) and lows dropping to around 25°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec797879798081818282828180
Data source: Temperature data for San Nicolas 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 Nicolas

In San Nicolas in September, the total precipitation amount is 51 mm (2.0 in) spread over a period of 10 days.

September Precipitation Trends in San Nicolas

The chart displays monthly precipitation patterns in San Nicolas, 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 Nicolas, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec35252315211820365111110953
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Nicolas

In San Nicolas in September, humidity is 81%. With an average temperature of 28°C (83°F), this humidity feels like walking through a warm, damp blanket, making travel feel both stifling and exhausting.

September Average Humidity in San Nicolas

This chart illustrates the average monthly humidity levels in San Nicolas, 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 Nicolas is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%81%81%82%84%85%85%83%81%81%82%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Nicolas

In San Nicolas 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 San Nicolas.

Maximum UV Index Levels in San Nicolas for September

The chart shows the monthly maximum UV Index (UVI) for San Nicolas 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 Nicolas typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111214141313131313121110
Data source: San Nicolas 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 Nicolas Compares to Other Months

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

This table compares monthly weather conditions in San Nicolas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)35 mm (1.4 inches)80%extreme
February Weather26°C (78°F)25 mm (1.0 inches)81%extreme
March Weather26°C (79°F)23 mm (0.9 inches)81%extreme
April Weather26°C (80°F)15 mm (0.6 inches)82%extreme
May Weather27°C (80°F)21 mm (0.8 inches)84%extreme
June Weather27°C (81°F)18 mm (0.7 inches)85%extreme
July Weather27°C (81°F)20 mm (0.8 inches)85%extreme
August Weather28°C (82°F)36 mm (1.4 inches)83%extreme
September Weather28°C (83°F)51 mm (2.0 inches)81%extreme
October Weather28°C (83°F)111 mm (4.4 inches)81%extreme
November Weather27°C (81°F)109 mm (4.3 inches)82%extreme
December Weather27°C (80°F)53 mm (2.1 inches)81%very high

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