May Weather in Nisa, Portugal

Last updated: August 27, 2025

In May, the average temperature in Nisa, Portugal hovers around 19°C (66°F), offering a pleasantly mild climate. Expect temperatures to range from a cool 5°C (41°F) at night to a warm 35°C (95°F) during the day. During this time, the region typically experiences 39 mm (1.5 in) of precipitation over approximately 5 days, and maintains an average humidity level of 70%.

May Temperature in Nisa

In May in Nisa, the average temperature is 19°C (66°F), with maximums reaching up to 35°C (95°F) and minimums dropping as low as 5°C (41°F). Visitors should be prepared for a range of temperatures, making it advisable to bring layers for both warm and cool conditions.

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

The chart illustrates May temperature patterns in Nisa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nisa, May typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (41°F).

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

May Precipitation in Nisa

In Nisa in May, the precipitation amount is 39 mm (1.5 in) spread over a duration of 5 days.

May Precipitation Trends in Nisa

The chart displays monthly precipitation patterns in Nisa, 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 Nisa, May typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 5 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Nisa

In Nisa 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 Nisa

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

In Nisa in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Nisa.

Maximum UV Index Levels in Nisa for May

The chart shows the monthly maximum UV Index (UVI) for Nisa 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 Nisa typically reaches 9, which falls under the very high exposure category.

Data source: Nisa 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 Nisa Compares to Other Months

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

This table compares monthly weather conditions in Nisa, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	42 mm (1.6 inches)	85%	moderate
February Weather	11°C (52°F)	57 mm (2.3 inches)	75%	moderate
March Weather	12°C (54°F)	97 mm (3.8 inches)	72%	high
April Weather	14°C (58°F)	92 mm (3.6 inches)	70%	very high
May Weather	19°C (66°F)	39 mm (1.5 inches)	70%	very high
June Weather	21°C (70°F)	15 mm (0.6 inches)	63%	extreme
July Weather	24°C (75°F)	5 mm (0.2 inches)	60%	very high
August Weather	25°C (77°F)	5 mm (0.2 inches)	60%	very high
September Weather	22°C (73°F)	33 mm (1.3 inches)	67%	very high
October Weather	18°C (65°F)	61 mm (2.4 inches)	74%	high
November Weather	13°C (55°F)	88 mm (3.5 inches)	83%	moderate
December Weather	10°C (51°F)	77 mm (3.0 inches)	85%	moderate