September Weather in Fontanelas, Portugal

Last updated: August 27, 2025

In September, the average temperature in Fontanelas, Portugal hovers around 18°C (65°F), providing a pleasant climate for outdoor activities. Expect a minimum of 15°C (60°F) and a comfy maximum of 23°C (74°F). While enjoying the mild weather, be aware that precipitation can reach 32 mm (1.2 in) over approximately 2 days, and the average humidity sits at 67%, adding a touch of warmth to the air.

September Temperature in Fontanelas

In September in Fontanelas, the average temperature is 18°C (65°F). Maximums can reach 23°C (74°F), and minimums can be as low as 15°C (60°F). This pleasant climate makes it an ideal time for travelers to explore the sights and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Fontanelas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fontanelas, September typically has an average temperature of 18°C (65°F), with highs reaching up to 23°C (74°F) and lows dropping to around 15°C (60°F).

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

September Precipitation in Fontanelas

In Fontanelas in September, the precipitation amount is 32 mm (1.2 in) over the course of 2 days.

September Precipitation Trends in Fontanelas

The chart displays monthly precipitation patterns in Fontanelas, 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 Fontanelas, September typically receives around 32 mm (1.2 inches) of precipitation spread over approximately 2 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 Fontanelas

In Fontanelas in September humidity is 67%. With an average temperature of 18°C (65°F), this humidity feels like a mild blanket wrapping around you, making outdoor activities feel pleasantly refreshing, yet you may find yourself reaching for a drink more often to stay hydrated while exploring the sights.

September Average Humidity in Fontanelas

This chart illustrates the average monthly humidity levels in Fontanelas, 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 Fontanelas is approximately 67%, 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 Fontanelas

In Fontanelas 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 Fontanelas.

Maximum UV Index Levels in Fontanelas for September

The chart shows the monthly maximum UV Index (UVI) for Fontanelas 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 Fontanelas typically reaches 8, which falls under the very high exposure category.

Data source: Fontanelas 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 Fontanelas Compares to Other Months

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

This table compares monthly weather conditions in Fontanelas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	42 mm (1.7 inches)	85%	moderate
February Weather	13°C (56°F)	59 mm (2.3 inches)	75%	moderate
March Weather	14°C (57°F)	64 mm (2.5 inches)	72%	high
April Weather	14°C (58°F)	71 mm (2.8 inches)	70%	very high
May Weather	16°C (61°F)	33 mm (1.3 inches)	70%	very high
June Weather	17°C (63°F)	12 mm (0.5 inches)	63%	extreme
July Weather	18°C (64°F)	3 mm (0.1 inches)	60%	very high
August Weather	18°C (65°F)	4 mm (0.1 inches)	60%	very high
September Weather	18°C (65°F)	32 mm (1.2 inches)	67%	very high
October Weather	18°C (64°F)	53 mm (2.1 inches)	74%	high
November Weather	16°C (60°F)	89 mm (3.5 inches)	83%	moderate
December Weather	14°C (58°F)	73 mm (2.9 inches)	85%	moderate