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 transition from April to May in Alvor brings a subtle temperature rise, with average high-temperatures increasing from a refreshing 17.8°C (64°F) to an agreeable 20.8°C (69.4°F). Alvor throughout May, experiences an average nighttime temperature of 15.6°C (60.1°F).Humidity
The average relative humidity in May is 72%.Rainfall
May is the last month it rains in Alvor. During 1.6 rainfall days, in May, Alvor aggregates 2mm (0.08") of precipitation. Throughout the year, there are 25.8 rainfall days, and 32mm (1.26") of precipitation is accumulated.Sea temperature
In May, the average sea temperature in Alvor is 18.3°C (64.9°F).Note: A surface water temperature of 18.3°C (64.9°F) does not provide an enjoyable swimming experience for most. Breathing control becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
The average length of the day in May is 14h and 10min.On the first day of the month, sunrise is at 06:39 and sunset at 20:23. On the last day of May, sunrise is at 06:15 and sunset at 20:48 WEST.
Sunshine
In May, the average sunshine is 11.1h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 5 during May leads to these advisories:
Ensure safety - Imperative it is to shield skin and eyes from damage. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the average May temperature in Alvor?
What is the average humidity in May in Alvor?
What is the last month it rains in Alvor?
How cold is the water in May in Alvor?
How many hours of daylight does Alvor have in May?
When is the sunrise / sunset in May in Alvor?
How many hours of sunshine does Alvor have in May?
How high is the UV index in May in Alvor?
Average temperature in May
Alvor, Portugal
- Average high temperature in May: 20.8°C
The warmest month (with the highest average high temperature) is August (25.9°C).
The month with the lowest average high temperature is January (15.2°C).
- Average low temperature in May: 15.6°C
The month with the highest average low temperature is August (19.7°C).
The coldest month (with the lowest average low temperature) is February (11.3°C).
Average pressure in May
Alvor, Portugal
- Average pressure in May: 1016.1mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in May
Alvor, Portugal
- Average wind speed in May: 16.5km/h
The windiest month (with the highest average wind speed) is February (19.1km/h).
The calmest month (with the lowest average wind speed) is September (13.6km/h).
Average humidity in May
Alvor, Portugal
- Average humidity in May: 72%
The month with the highest relative humidity is April (76%).
The month with the lowest relative humidity is August (69%).
Average rainfall in May
Alvor, Portugal
- Average rainfall in May: 2mm
The wettest month (with the highest rainfall) is November (8mm).
The driest months (with the least rainfall) are June, July, August and September (0mm).
Average rainfall days in May
Alvor, Portugal
- Average rainfall days in May: 1.6 days
The month with the highest number of rainy days is April (4.8 days).
The month with the least rainy days is August (0.2 days).
Average sea temperature in May
Alvor, Portugal
- Average sea temperature in May: 18.3°C
The best month for swimming (with the highest average sea temperature) is September (21.2°C).
The coldest month (with the lowest average sea temperature) is March (16°C).
Average daylight in May /
Average sunshine in May
Alvor, Portugal
- Average daylight in May: 14h and 1min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in May: 11h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in May
Alvor, Portugal
- Average sunshine days in May: 28.6 days
The months with the most sunshine days are July and August (30.6 days).
The month with the least sunshine days is November (23.2 days).
Average UV index in May
Alvor, Portugal
- Average UV index in May: 5
The months with the highest UV index are 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
Alvor, Portugal
- Average cloud cover in May: 19
The month with the most cloud cover is January (Cloud cover 32).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in May
Alvor, 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).
Alvor, Portugal
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