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 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
May sees a marginal temperature increase, moving from a comfortable 18.6°C (65.5°F) in April to a pleasant 21.8°C (71.2°F). Alfama registers a consistent average low-temperature of 14.8°C (58.6°F) during May.Humidity
In Alfama, Portugal, the average relative humidity in May is 69%.Rainfall
In May, the rain falls for 3.8 days. Throughout May, 5mm (0.2") of precipitation is accumulated. Throughout the year, in Alfama, there are 54.4 rainfall days, and 62mm (2.44") of precipitation is accumulated.Daylight
In Alfama, 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 Alfama, sunrise is at 06:13 and sunset at 20:54 WEST.
Sunshine
In Alfama, the average sunshine in May is 10.6h.UV index
The months with the highest UV index in Alfama are May through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 6 in May translates into this advice:
Shun overexposure. Protection from sun ravages is indispensable. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What is the temperature in May in Alfama?
What is the average humidity in May in Alfama?
How much does it rain in Alfama in May?
How many hours of daylight does Alfama have in May?
What time are sunrise and sunset in May in Alfama?
How long on average sun shines in May in Alfama?
What is the month with the highest UV index in Alfama?
How high is the UV index in May in Alfama?
Average temperature in May
Alfama, 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
Alfama, 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
Alfama, 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
Alfama, 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
Alfama, 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
Alfama, 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 daylight in May /
Average sunshine in May
Alfama, 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
Alfama, 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
Alfama, 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
Alfama, 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
Alfama, 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).
Alfama, Portugal
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