May
Weather in May
Temperature
May's onset is marked by a subtle temperature increase, moving from an enjoyable 19°C (66.2°F) in April to an agreeable 22°C (71.6°F). Throughout May, an average nighttime temperature of 13°C (55.4°F) is experienced in Sao Rafael, Portugal.Rainfall
In Sao Rafael, in May, during 5 rainfall days, 29mm (1.14") of precipitation is typically accumulated. Throughout the year, in Sao Rafael, there are 77 rainfall days, and 558mm (21.97") of precipitation is accumulated.Sea temperature
In May, the average sea temperature is 17°C (62.6°F).Note: For most people, a water temperature of 17°C (62.6°F) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 21°C (69.8°F).
Daylight
In Sao Rafael, the average length of the day in May is 14h and 10min.On the first day of the month, sunrise is at 06:37 and sunset at 20:22. On the last day of May, in Sao Rafael, sunrise is at 06:14 and sunset at 20:46 WEST.
Sunshine
In May, the average sunshine is 10h.UV index
In Sao Rafael, the average daily maximum UV index in May is 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 8 during May, leads to the following recommendations:
Precautions are essential; the risk of damage to unprotected skin and eyes is too high. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Sao Rafael in May?
How much does it rain in Sao Rafael in May?
What is the sea water temperature in May in Sao Rafael?
What is the average length of the day in May in Sao Rafael?
When are sunrise and sunset in May in Sao Rafael?
How many hours of sunshine does Sao Rafael have in May?
What is the UV index intensity in May in Sao Rafael?
Average temperature in May
Sao Rafael, Portugal
- Average high temperature in May: 22°C
The warmest month (with the highest average high temperature) is August (28°C).
The months with the lowest average high temperature are January, February and December (16°C).
- Average low temperature in May: 13°C
The month with the highest average low temperature is July (18°C).
The coldest month (with the lowest average low temperature) is January (8°C).
Average rainfall in May
Sao Rafael, Portugal
- Average rainfall in May: 29mm
The wettest month (with the highest rainfall) is December (99mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in May
Sao Rafael, Portugal
- Average rainfall days in May: 5 days
The month with the highest number of rainy days is December (12 days).
The months with the least rainy days are July and August (1 days).
Average sea temperature in May
Sao Rafael, Portugal
- Average sea temperature in May: 17°C
The best months for swimming (with the highest average sea temperature) are August and September (21°C).
The coldest month (with the lowest average sea temperature) is February (15°C).
Average daylight in May /
Average sunshine in May
Sao Rafael, 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: 10h
The month with the most sunshine is July (Average sunshine: 12h).
The months with the least sunshine are January and December (Average sunshine: 5h).
Average UV index in May
Sao Rafael, Portugal
- Average UV index in May: 8
The months with the highest UV index are June, July and August (UV index 9).
The months with the lowest UV index are January and December (UV index 2).
