Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The introduction of December sees an average high-temperature of a moderate 15.7°C (60.3°F), hardly deviating from November. The month of December records an average low-temperature of 10.1°C (50.2°F) in São Francisco, Portugal.Humidity
The average relative humidity in December is 76%.Rainfall
In São Francisco, in December, during 8.5 rainfall days, 22mm (0.87") of precipitation is typically accumulated. Throughout the year, in São Francisco, there are 78.2 rainfall days, and 171mm (6.73") of precipitation is accumulated.Daylight
The month with the shortest days in São Francisco is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 07:35 and sunset at 17:14. On the last day of December, in São Francisco, sunrise is at 07:53 and sunset at 17:24 WET.
Sunshine
In São Francisco, the average sunshine in December is 5.9h.UV index
December is the month with the lowest UV index in São Francisco, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 3 in December translates into the following recommendations:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What are December temperatures in São Francisco?
What is the average humidity in December in São Francisco?
How many days does it rain in December in São Francisco?
What is the month with the shortest days in São Francisco?
What is the average length of the day in December in São Francisco?
What time are sunrise and sunset in December in São Francisco?
How many hours of sunshine does São Francisco have in December?
What is the month with the lowest UV index in São Francisco?
How high is the UV index in December in São Francisco?
Average temperature in December
São Francisco, Portugal
- Average high temperature in December: 15.7°C
The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (14.8°C).
- Average low temperature in December: 10.1°C
The months with the highest average low temperature are July and August (17.3°C).
The coldest month (with the lowest average low temperature) is February (9°C).
Average pressure in December
São Francisco, Portugal
- Average pressure in December: 1022.6mbar
The month with the highest atmospheric pressure is December (1022.6mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in December
São Francisco, Portugal
- Average wind speed in December: 13.6km/h
The windiest month (with the highest average wind speed) is February (15km/h).
The calmest month (with the lowest average wind speed) is September (11.8km/h).
Average humidity in December
São Francisco, Portugal
- Average humidity in December: 76%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is August (66%).
Average rainfall in December
São Francisco, Portugal
- Average rainfall in December: 22mm
The wettest month (with the highest rainfall) is November (34mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days in December
São Francisco, Portugal
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is April (11 days).
The month with the least rainy days is August (1.6 days).
Average daylight in December /
Average sunshine in December
São Francisco, Portugal
- Average daylight in December: 9h and 3min
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 December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
São Francisco, Portugal
- Average sunshine days in December: 22.1 days
The month with the most sunshine days is August (28 days).
The month with the least sunshine days is April (17.2 days).
Average UV index in December
São Francisco, Portugal
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
São Francisco, Portugal
- Average cloud cover in December: 35
The month with the most cloud cover is January (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
São Francisco, Portugal
- Average visibility in December: 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).
São Francisco, Portugal
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