September Weather in Oleiros, Portugal

Last updated: August 27, 2025

In September, the average temperature in Oleiros, Portugal is a pleasant 19°C (67°F). Visitors can expect a comfortable range, with temperatures dipping as low as 7°C (44°F) and soaring up to 34°C (93°F). Precipitation averages around 40 mm (1.6 in) over 4 days, contributing to an average humidity of 67%. Whether you're exploring or relaxing, this mild climate offers an inviting backdrop for any adventure!

September Temperature in Oleiros

In September in Oleiros, the average temperature is 19°C (67°F). Maximums can reach 34°C (93°F) and minimums can be as low as 7°C (44°F). This climate offers a pleasant mix of warmth and cooler evenings, making it an ideal time for travelers to enjoy outdoor activities and explore the local attractions.

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

The chart illustrates September temperature patterns in Oleiros, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oleiros, September typically has an average temperature of 19°C (67°F), with highs reaching up to 34°C (93°F) and lows dropping to around 7°C (44°F).

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

September Precipitation in Oleiros

In Oleiros in September, the precipitation amount is 40 mm (1.6 in) spread over a duration of 4 days.

September Precipitation Trends in Oleiros

The chart displays monthly precipitation patterns in Oleiros, 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 Oleiros, September typically receives around 40 mm (1.6 inches) of precipitation spread over approximately 4 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 Oleiros

In Oleiros in September, humidity is 67%. With an average temperature of 19°C (67°F), this humidity feels like walking through a warm, soft blanket, making sightseeing and outdoor activities a bit more challenging but still enjoyable for those prepared with light clothing and plenty of hydration.

September Average Humidity in Oleiros

This chart illustrates the average monthly humidity levels in Oleiros, 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 Oleiros 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 Oleiros

In Oleiros 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 Oleiros.

Maximum UV Index Levels in Oleiros for September

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

Data source: Oleiros 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 Oleiros Compares to Other Months

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

This table compares monthly weather conditions in Oleiros, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (45°F)	63 mm (2.5 inches)	85%	moderate
February Weather	9°C (49°F)	99 mm (3.9 inches)	75%	moderate
March Weather	10°C (51°F)	141 mm (5.5 inches)	72%	high
April Weather	12°C (55°F)	140 mm (5.5 inches)	70%	very high
May Weather	16°C (61°F)	68 mm (2.7 inches)	70%	very high
June Weather	18°C (65°F)	32 mm (1.2 inches)	63%	extreme
July Weather	21°C (70°F)	12 mm (0.5 inches)	60%	very high
August Weather	21°C (70°F)	15 mm (0.6 inches)	60%	very high
September Weather	19°C (67°F)	40 mm (1.6 inches)	67%	very high
October Weather	16°C (60°F)	97 mm (3.8 inches)	74%	high
November Weather	11°C (51°F)	139 mm (5.5 inches)	83%	moderate
December Weather	9°C (48°F)	128 mm (5.0 inches)	85%	moderate