May weather forecastCorroios, Portugal
May
Weather in May
May embodies the onset of summer, bringing warmer climates to Corroios. Average temperatures oscillate primarily in the early twenties, painting May's profile as an evidently warm month. The summer season is manifesting more vigorously, as seen in the decrease in rain and simultaneous increase in the number of sunny days. While humidity progressively declines, the township retains its overall moist demeanour. The light lingers longer, paving the way for prolonged afternoons and later sunsets.Temperature
As Corroios welcomes May, the average high-temperature sees a modest rise, transitioning from a comfortable 18.6°C (65.5°F) in April to an agreeable 21.8°C (71.2°F). Corroios experiences a consistent average temperature of 14.8°C (58.6°F) throughout the nights in May.Humidity
In Corroios, Portugal, the average relative humidity in May is 69%.Rainfall
In Corroios, in May, it is raining for 3.8 days, with typically 5mm (0.2") of accumulated precipitation. Throughout the year, in Corroios, there are 54.4 rainfall days, and 62mm (2.44") of precipitation is accumulated.Sea temperature
In Corroios, the average seawater temperature in May is 17.4°C (63.3°F).Note: Most individuals do not find swimming at 17.4°C (63.3°F) to be enjoyable. As the water temperature declines below 21°C (69.8°F), maintaining control over one's breathing becomes harder.
Daylight
The average length of the day in May is 14h and 17min.On the first day of the month, sunrise is at 06:38 and sunset at 20:28. On the last day of May, in Corroios, sunrise is at 06:13 and sunset at 20:54 WEST.
Sunshine
In Corroios, the average sunshine in May is 10.6h.UV index
May through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 6 during May, leads to the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Corroios, Portugal
- Average high temperature in May: 21.8°C
The warmest month (with the highest average high temperature) is August (27.1°C).
The month with the lowest average high temperature is January (14.9°C).
- Average low temperature in May: 14.8°C
The month with the highest average low temperature is July (17.9°C).
The coldest month (with the lowest average low temperature) is February (9.8°C).
Average pressure in May
Corroios, Portugal
- Average pressure in May: 1016.5mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.7mbar).
Average wind speed in May
Corroios, Portugal
- Average wind speed in May: 15.4km/h
The windiest month (with the highest average wind speed) is February (16.5km/h).
The calmest month (with the lowest average wind speed) is September (13km/h).
Average humidity in May
Corroios, Portugal
- Average humidity in May: 69%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (68%).
Average rainfall in May
Corroios, Portugal
- Average rainfall in May: 5mm
The wettest month (with the highest rainfall) is November (15mm).
The driest months (with the least rainfall) are June, July and August (1mm).
Average rainfall days in May
Corroios, Portugal
- Average rainfall days in May: 3.8 days
The month with the highest number of rainy days is November (9.3 days).
The month with the least rainy days is August (0.8 days).
Average sea temperature in May
Corroios, Portugal
- Average sea temperature in May: 17.4°C
The best month for swimming (with the highest average sea temperature) is September (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.1°C).
Average daylight in May /
Average sunshine in May
Corroios, Portugal
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 10h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in May
Corroios, Portugal
- Average sunshine days in May: 24.7 days
The month with the most sunshine days is July (29.7 days).
The month with the least sunshine days is November (17.7 days).
Average UV index in May
Corroios, Portugal
- Average UV index in May: 6
The months with the highest UV index are May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in May
Corroios, Portugal
- Average cloud cover in May: 24
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in May
Corroios, Portugal
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





