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September Weather in Sant Joan, Spain

Last updated: August 27, 2025

In September, the average temperature in Sant Joan, Spain is a pleasant 24°C (76°F). Visitors can expect a range from a refreshing 15°C (59°F) to a warm 32°C (90°F). During this time, 59 mm (2.3 in) of precipitation typically falls over 9 days, and the average humidity sits at a comfortable 77%. Embrace the mild climate and enjoy all that this destination has to offer!

September Temperature in Sant Joan

In September in Sant Joan, the average temperature is 24°C (76°F), with maximums reaching 32°C (90°F) and minimums dropping to as low as 15°C (59°F). This pleasant climate makes Sant Joan a perfect destination for travelers looking to enjoy mild and comfortable weather.

September Weather in Sant Joan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sant Joan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sant Joan, 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 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec535457606775808176686056
Data source: Temperature data for Sant Joan 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 Sant Joan

In Sant Joan in September, the precipitation amount is 59 mm (2.3 in) over the course of 9 days.

September Precipitation Trends in Sant Joan

The chart displays monthly precipitation patterns in Sant Joan, 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 Sant Joan, September typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec43293342312151559616633
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sant Joan

In Sant Joan in September humidity is 77%. With an average temperature of 24°C (76°F), this humidity feels like traveling through a warm, heavy blanket that clings to your skin, making each step feel like a gentle workout as the air wraps around you, urging you to move at a leisurely pace and seek out shade whenever possible.

September Average Humidity in Sant Joan

This chart illustrates the average monthly humidity levels in Sant Joan, 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 Sant Joan is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%73%76%79%79%82%84%81%77%78%73%73%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sant Joan

In Sant Joan in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sant Joan.

Maximum UV Index Levels in Sant Joan for September

The chart shows the monthly maximum UV Index (UVI) for Sant Joan 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 Sant Joan typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34689101098642
Data source: Sant Joan 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 Sant Joan Compares to Other Months

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

This table compares monthly weather conditions in Sant Joan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (53°F)43 mm (1.7 inches)76%moderate
February Weather12°C (55°F)29 mm (1.1 inches)73%moderate
March Weather14°C (57°F)33 mm (1.3 inches)76%high
April Weather16°C (60°F)42 mm (1.6 inches)79%very high
May Weather19°C (67°F)30 mm (1.2 inches)79%very high
June Weather24°C (75°F)21 mm (0.8 inches)82%very high
July Weather27°C (80°F)5 mm (0.2 inches)84%very high
August Weather27°C (81°F)15 mm (0.6 inches)81%very high
September Weather24°C (76°F)59 mm (2.3 inches)77%very high
October Weather20°C (68°F)61 mm (2.4 inches)78%high
November Weather16°C (60°F)66 mm (2.6 inches)73%moderate
December Weather13°C (56°F)33 mm (1.3 inches)73%low

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