May Weather in Fortios, Portugal

Last updated: August 27, 2025

In May, the average temperature in Fortios, Portugal hovers around 19°C (66°F). Expect a comfortable range, with minimums dipping to 5°C (40°F) and maximums soaring to 34°C (94°F). However, be prepared for some rain, as the area receives about 41 mm (1.6 in) of precipitation over 5 days. With an average humidity level of 70%, the weather can feel quite humid!

May Temperature in Fortios

In May in Fortios, the average temperature is 19°C (66°F). The maximum can reach 34°C (94°F), while the minimum can dip as low as 5°C (40°F). This makes it an ideal time for travelers seeking to enjoy a variety of outdoor activities while experiencing a comfortable climate.

May Weather in Fortios: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Fortios, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fortios, May typically has an average temperature of 19°C (66°F), with highs reaching up to 34°C (94°F) and lows dropping to around 5°C (40°F).

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

May Precipitation in Fortios

In Fortios in May, the precipitation amount is 41 mm (1.6 in) over a period of 5 days.

May Precipitation Trends in Fortios

The chart displays monthly precipitation patterns in Fortios, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Fortios, May typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Fortios

In Fortios in May humidity is 70%. With an average temperature of 19°C (66°F), this humidity feels like a warm blanket enveloping you, making travel a bit sticky and prompting frequent breaks for water as you explore the sights.

May Average Humidity in Fortios

This chart illustrates the average monthly humidity levels in Fortios, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Fortios is approximately 70%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Fortios

In Fortios in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Fortios.

Maximum UV Index Levels in Fortios for May

The chart shows the monthly maximum UV Index (UVI) for Fortios in May, 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 May, the maximum UV index in Fortios typically reaches 10, which falls under the very high exposure category.

Data source: Fortios May 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 May Weather in Fortios Compares to Other Months

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

This table compares monthly weather conditions in Fortios, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	37 mm (1.4 inches)	85%	moderate
February Weather	11°C (52°F)	51 mm (2.0 inches)	75%	moderate
March Weather	12°C (54°F)	93 mm (3.6 inches)	72%	high
April Weather	14°C (58°F)	87 mm (3.4 inches)	70%	very high
May Weather	19°C (66°F)	41 mm (1.6 inches)	70%	very high
June Weather	21°C (70°F)	14 mm (0.6 inches)	63%	extreme
July Weather	24°C (76°F)	4 mm (0.2 inches)	60%	very high
August Weather	25°C (77°F)	7 mm (0.3 inches)	60%	very high
September Weather	22°C (73°F)	31 mm (1.2 inches)	67%	very high
October Weather	18°C (65°F)	53 mm (2.1 inches)	74%	high
November Weather	12°C (54°F)	80 mm (3.2 inches)	83%	moderate
December Weather	10°C (50°F)	75 mm (3.0 inches)	85%	moderate