Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average sea temperature in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
The arrival of May brings a soft temperature shift, with the average high-temperature nudging from a comfortable 18.6°C (65.5°F) in April to a pleasant 21.8°C (71.2°F). In Arrentela, May nights witness a steady temperature drop to a mild 14.8°C (58.6°F).Humidity
In Arrentela, the average relative humidity in May is 69%.Rainfall
In Arrentela, in May, during 3.8 rainfall days, 5mm (0.2") of precipitation is typically accumulated. Throughout the year, in Arrentela, there are 54.2 rainfall days, and 61mm (2.4") of precipitation is accumulated.Sea temperature
In Arrentela, Portugal, in May, the average water temperature is 17.4°C (63.3°F).Note: Most people do not take pleasure in swimming in water at 17.4°C (63.3°F). The difficulty of managing breathing increases as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
In Arrentela, Portugal, the average length of the day in May is 14h and 17min.On the first day of May in Arrentela, sunrise is at 06:38 and sunset at 20:28. On the last day of the month, sunrise is at 06:13 and sunset at 20:54 WEST.
Sunshine
In May, the average sunshine in Arrentela, Portugal, is 10.6h.UV index
The months with the highest UV index in Arrentela are May through September, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Deflect overexposure. Sun protection is a necessity. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
What is the average May temperature in Arrentela?
What is the average humidity in May in Arrentela?
How much does it rain in Arrentela in May?
How cold is the water in May in Arrentela?
What is the average length of the day in May in Arrentela?
When are sunrise and sunset in May in Arrentela?
How long on average sun shines in May in Arrentela?
What are the months with the highest UV index in Arrentela?
How high is the UV index in May in Arrentela?
Average temperature in May
Arrentela, 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
Arrentela, 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
Arrentela, 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 (13.1km/h).
Average humidity in May
Arrentela, 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
Arrentela, 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
Arrentela, 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
Arrentela, 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
Arrentela, Portugal
- Average daylight in May: 14h and 2min
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 4min
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
Arrentela, 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
Arrentela, 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
Arrentela, 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
Arrentela, 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).
Arrentela, Portugal
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