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 sea temperature 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 transition into December reveals an average high-temperature of a mild 15.6°C (60.1°F), mirroring a close resemblance to November. Throughout December, Sesimbra records an average temperature of 10.3°C (50.5°F) at night.Humidity
In December, the average relative humidity is 76%.Rainfall
In Sesimbra, Portugal, during December, the rain falls for 9.7 days and regularly aggregates up to 47mm (1.85") of precipitation. Throughout the year, in Sesimbra, there are 100.8 rainfall days, and 338mm (13.31") of precipitation is accumulated.Sea temperature
In Sesimbra, the average seawater temperature in December is 16.7°C (62.1°F).Note: Most people find swimming in 16.7°C (62.1°F) to be not enjoyable. The control of one's breathing becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Sesimbra.On the first day of December, sunrise is at 07:35 and sunset at 17:16. On the last day of the month, sunrise is at 07:53 and sunset at 17:25 WET.
Sunshine
In December, the average sunshine is 5.9h.UV index
January through April, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Sesimbra. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 4 in December transforms into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the usual temperature for Sesimbra in December?
What is the average humidity in December in Sesimbra?
How many days does it rain in December in Sesimbra?
What is the sea water temperature in December in Sesimbra?
What is the month with the shortest days in Sesimbra?
How many hours of daylight does Sesimbra have in December?
When is the sunrise / sunset in December in Sesimbra?
How many hours of sunshine does Sesimbra have in December?
What are the months with the lowest UV index in Sesimbra?
What is the UV index reading in December in Sesimbra?
Average temperature in December
Sesimbra, Portugal
- Average high temperature in December: 15.6°C
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (14.8°C).
- Average low temperature in December: 10.3°C
The month with the highest average low temperature is July (17.3°C).
The coldest month (with the lowest average low temperature) is February (9.1°C).
Average pressure in December
Sesimbra, 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
Sesimbra, Portugal
- Average wind speed in December: 13.6km/h
The windiest month (with the highest average wind speed) is February (14.8km/h).
The calmest month (with the lowest average wind speed) is September (11.6km/h).
Average humidity in December
Sesimbra, 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 (64%).
Average rainfall in December
Sesimbra, Portugal
- Average rainfall in December: 47mm
The wettest month (with the highest rainfall) is November (55mm).
The driest months (with the least rainfall) are July and August (2mm).
Average rainfall days in December
Sesimbra, Portugal
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is November (13.3 days).
The month with the least rainy days is August (1.7 days).
Average sea temperature in December
Sesimbra, Portugal
- Average sea temperature in December: 16.7°C
The best month for swimming (with the highest average sea temperature) is October (19.9°C).
The coldest month (with the lowest average sea temperature) is March (15.3°C).
Average daylight in December /
Average sunshine in December
Sesimbra, 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 24min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Sesimbra, Portugal
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is August (28 days).
The month with the least sunshine days is November (14.9 days).
Average UV index in December
Sesimbra, Portugal
- Average UV index in December: 4
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, April, November and December (UV index 4).
Average cloud cover in December
Sesimbra, Portugal
- Average cloud cover in December: 35
The month with the most cloud cover is January (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Sesimbra, 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).
Sesimbra, Portugal
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