September Weather in Belmonte, Portugal

Last updated: August 27, 2025

In September, the average temperature in Belmonte, Portugal is a pleasant 20°C (68°F). However, it can fluctuate significantly, with minimums dipping to 8°C (46°F) and maximums soaring up to 34°C (93°F). Rainfall is moderate, with 43 mm (1.7 in) expected over just 4 days, and the average humidity hovers around 63%, making for a comfortable climate overall.

September Temperature in Belmonte

In September in Belmonte, the average temperature is 20°C (68°F). The maximum can reach 34°C (93°F), while the minimum can be as low as 8°C (46°F). This climate makes Belmonte an ideal destination for travelers looking to enjoy mild weather and a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Belmonte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Belmonte, September typically has an average temperature of 20°C (68°F), with highs reaching up to 34°C (93°F) and lows dropping to around 8°C (46°F).

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

September Precipitation in Belmonte

In Belmonte in September, the precipitation amount is 43 mm (1.7 in) over the course of 4 days.

September Precipitation Trends in Belmonte

The chart displays monthly precipitation patterns in Belmonte, 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 Belmonte, September typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 4 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Belmonte

In Belmonte in September humidity is 63%. With an average temperature of 20°C (68°F), this humidity feels like a warm, refreshing embrace, making travel comfortable and inviting, as long as you stay hydrated and take occasional breaks in the shade.

September Average Humidity in Belmonte

This chart illustrates the average monthly humidity levels in Belmonte, 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 Belmonte is approximately 63%, 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 Belmonte

In Belmonte 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 Belmonte.

Maximum UV Index Levels in Belmonte for September

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

Data source: Belmonte 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 Belmonte Compares to Other Months

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

This table compares monthly weather conditions in Belmonte, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (43°F)	45 mm (1.8 inches)	91%	moderate
February Weather	9°C (48°F)	74 mm (2.9 inches)	85%	moderate
March Weather	10°C (50°F)	103 mm (4.1 inches)	79%	high
April Weather	12°C (54°F)	99 mm (3.9 inches)	77%	very high
May Weather	17°C (62°F)	46 mm (1.8 inches)	76%	very high
June Weather	20°C (68°F)	24 mm (0.9 inches)	64%	extreme
July Weather	23°C (74°F)	11 mm (0.4 inches)	54%	very high
August Weather	23°C (74°F)	10 mm (0.4 inches)	52%	very high
September Weather	20°C (68°F)	43 mm (1.7 inches)	63%	very high
October Weather	15°C (60°F)	77 mm (3.0 inches)	78%	high
November Weather	10°C (50°F)	107 mm (4.2 inches)	90%	moderate
December Weather	8°C (46°F)	98 mm (3.9 inches)	91%	low