September Weather in Ribeirinha, Portugal

Last updated: August 27, 2025

In September, the average temperature in Ribeirinha, Portugal hovers around 22°C (71°F), with a comfortable minimum of 19°C (66°F) and a delightful maximum of 24°C (76°F). Expect about 45 mm (1.8 in) of precipitation spread over 10 days, contributing to an average humidity of 82%. A perfect time to enjoy the mild weather!

September Temperature in Ribeirinha

In September in Ribeirinha, the average temperature is 22°C (71°F). Maximum temperatures can reach 24°C (76°F), while minimums can drop to as low as 19°C (66°F). This pleasant climate makes Ribeirinha an ideal destination for travelers looking to enjoy mild weather and outdoor activities.

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

The chart illustrates September temperature patterns in Ribeirinha, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ribeirinha, September typically has an average temperature of 22°C (71°F), with highs reaching up to 24°C (76°F) and lows dropping to around 19°C (66°F).

Data source: Temperature data for Ribeirinha generated using information from the Copernicus Climate Change Service.

September Precipitation in Ribeirinha

In Ribeirinha in September, the precipitation amount is 45 mm (1.8 in) spread over a duration of 10 days.

September Precipitation Trends in Ribeirinha

The chart displays monthly precipitation patterns in Ribeirinha, 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 Ribeirinha, September typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Ribeirinha

In Ribeirinha in September, humidity is 82%. With an average temperature of 22°C (71°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel laborious and sweat-dripping, urging travelers to stay hydrated and seek the shade more often.

September Average Humidity in Ribeirinha

This chart illustrates the average monthly humidity levels in Ribeirinha, 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 Ribeirinha is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ribeirinha

In Ribeirinha in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Ribeirinha.

Maximum UV Index Levels in Ribeirinha for September

The chart shows the monthly maximum UV Index (UVI) for Ribeirinha 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 Ribeirinha typically reaches 9, which falls under the very high exposure category.

Data source: Ribeirinha 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 Ribeirinha Compares to Other Months

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

This table compares monthly weather conditions in Ribeirinha, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (61°F)	78 mm (3.1 inches)	84%	moderate
February Weather	15°C (59°F)	77 mm (3.0 inches)	83%	moderate
March Weather	15°C (59°F)	49 mm (1.9 inches)	84%	high
April Weather	15°C (60°F)	76 mm (3.0 inches)	84%	very high
May Weather	16°C (62°F)	54 mm (2.1 inches)	83%	very high
June Weather	19°C (66°F)	43 mm (1.7 inches)	84%	extreme
July Weather	21°C (70°F)	22 mm (0.8 inches)	86%	very high
August Weather	22°C (72°F)	47 mm (1.9 inches)	82%	very high
September Weather	22°C (71°F)	45 mm (1.8 inches)	82%	very high
October Weather	20°C (69°F)	83 mm (3.3 inches)	79%	high
November Weather	18°C (65°F)	107 mm (4.2 inches)	80%	moderate
December Weather	17°C (63°F)	121 mm (4.8 inches)	85%	moderate