Weather in December
Temperature
The yearly lowest temperatures occur in January, February and December, averaging a high-temperature of 16°C (60.8°F).Rainfall
December is the month with the most rainfall. Rain falls for 12 days and accumulates 99mm (3.9") of precipitation.Sea temperature
In Sao Rafael, the average seawater temperature in December is 17°C (62.6°F).Note: The majority of people find swimming in 17°C (62.6°F) unenjoyable. As the water temperature decreases from 21°C (69.8°F) to 15°C (59°F), breathing becomes more challenging to control.
Daylight
The month with the shortest days in Sao Rafael is December, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 07:28 and sunset at 17:16. On the last day of the month, sunrise is at 07:46 and sunset at 17:26 WET.
Sunshine
The months with the least sunshine are January and December, with an average of 5h of sunshine.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Sao Rafael. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What are the coldest months in Sao Rafael?
What is the temperature in December in Sao Rafael?
What is the rainiest month in Sao Rafael?
How much does it rain in Sao Rafael in December?
What is the sea water temperature in December in Sao Rafael?
What is the month with the shortest days in Sao Rafael?
What is the average length of the day in December in Sao Rafael?
When are sunrise and sunset in December in Sao Rafael?
What is the month with the least sunshine in Sao Rafael?
How long on average sun shines in December in Sao Rafael?
What is the month with the lowest UV index in Sao Rafael?
How high is the UV index in December in Sao Rafael?
Average temperature in December
Sao Rafael, Portugal
- Average high temperature in December: 16°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 December: 9°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 December
Sao Rafael, Portugal
- Average rainfall in December: 99mm
The wettest month (with the highest rainfall) is December (99mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in December
Sao Rafael, Portugal
- Average rainfall days in December: 12 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 December
Sao Rafael, Portugal
- Average sea temperature in December: 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 December /
Average sunshine in December
Sao Rafael, Portugal
- Average daylight in December: 9h and 4min
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 December: 5h
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 December
Sao Rafael, Portugal
- Average UV index in December: 2
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).
Sao Rafael, Portugal
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