September Weather in Ota, Portugal

Last updated: August 27, 2025

In Ota, Portugal, the average temperature in September hovers around 21°C (70°F). Expect a minimum of 11°C (52°F) and a maximum of 36°C (96°F) during this period. Additionally, you can anticipate about 29 mm (1.1 in) of precipitation spread across 3 days, with an average humidity of 67%.

September Temperature in Ota

In September, in Ota, the average temperature is a comfortable 21°C (70°F). The maximum can reach a sweltering 36°C (96°F), while the minimum can drop to a chilly 11°C (52°F). Overall, it's a great time for travelers to enjoy a mix of warm and cool weather while exploring the area.

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

The chart illustrates September temperature patterns in Ota, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ota, September typically has an average temperature of 21°C (70°F), with highs reaching up to 36°C (96°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Ota

In Ota in September, the precipitation amount is 29 mm (1.1 in) over the course of 3 days.

September Precipitation Trends in Ota

The chart displays monthly precipitation patterns in Ota, 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 Ota, September typically receives around 29 mm (1.1 inches) of precipitation spread over approximately 3 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 Ota

In Ota in September humidity is 67%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making travel a bit stifling but still enjoyable if you're prepared with light clothing and plenty of water.

September Average Humidity in Ota

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

In Ota 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 Ota.

Maximum UV Index Levels in Ota for September

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

Data source: Ota 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 Ota Compares to Other Months

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

This table compares monthly weather conditions in Ota, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	37 mm (1.4 inches)	85%	moderate
February Weather	12°C (54°F)	52 mm (2.1 inches)	75%	moderate
March Weather	13°C (56°F)	73 mm (2.9 inches)	72%	high
April Weather	15°C (59°F)	83 mm (3.3 inches)	70%	very high
May Weather	18°C (65°F)	42 mm (1.6 inches)	70%	very high
June Weather	19°C (67°F)	12 mm (0.5 inches)	63%	extreme
July Weather	21°C (71°F)	5 mm (0.2 inches)	60%	very high
August Weather	22°C (72°F)	4 mm (0.2 inches)	60%	very high
September Weather	21°C (70°F)	29 mm (1.1 inches)	67%	very high
October Weather	18°C (65°F)	47 mm (1.9 inches)	74%	high
November Weather	14°C (57°F)	84 mm (3.3 inches)	83%	moderate
December Weather	12°C (54°F)	60 mm (2.4 inches)	85%	moderate