December weather forecastConstância, Portugal
December weather for Constância, Portugal: December, the first month of the winter in Constância, is also a moderate month, with an average temperature varying between 14.2°C (57.6°F) and 6.6°C (43.9°F). December has the shortest days of the year in Constância, Portugal, with an average of 9h and 24min of daylight.
December
Weather in December
December, the first month of the winter in Constância, is also a moderate month, with an average temperature varying between 14.2°C (57.6°F) and 6.6°C (43.9°F).Temperature
The arrival of December coincides with an average high-temperature of a moderate 14.2°C (57.6°F), indicating a minimal shift from November's 16.4°C (61.5°F). Constância in December anticipates an average nighttime temperature of 6.6°C (43.9°F).Humidity
In December, the average relative humidity is 78%.Rainfall
In Constância, in December, during 8.3 rainfall days, 42mm (1.65") of precipitation is typically accumulated. Throughout the year, in Constância, Portugal, there are 84.9 rainfall days, and 277mm (10.91") of precipitation is accumulated.Daylight
December has the shortest days of the year in Constância, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 07:34 and sunset at 17:10. On the last day of the month, sunrise is at 07:53 and sunset at 17:19 WET.
Sunshine
In December, the average sunshine is 5.7h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Constância. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily UV index of 3 turns into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Constância, Portugal
- Average high temperature in December: 14.2°C
The warmest month (with the highest average high temperature) is August (32.7°C).
The month with the lowest average high temperature is January (13.3°C).
- Average low temperature in December: 6.6°C
The month with the highest average low temperature is August (15.7°C).
The coldest month (with the lowest average low temperature) is January (5.7°C).
Average pressure in December
Constância, Portugal
- Average pressure in December: 1022.8mbar
The month with the highest atmospheric pressure is December (1022.8mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in December
Constância, Portugal
- Average wind speed in December: 10.7km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is September (9.8km/h).
Average humidity in December
Constância, Portugal
- Average humidity in December: 78%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (55%).
Average rainfall in December
Constância, Portugal
- Average rainfall in December: 42mm
The wettest month (with the highest rainfall) is November (50mm).
The driest months (with the least rainfall) are July and August (3mm).
Average rainfall days in December
Constância, Portugal
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is November (11.2 days).
The month with the least rainy days is August (1.6 days).
Average daylight in December /
Average sunshine in December
Constância, Portugal
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 42min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Constância, Portugal
- Average sunshine days in December: 21.6 days
The months with the most sunshine days are July and August (28.7 days).
The month with the least sunshine days is November (17.9 days).
Average UV index in December
Constância, Portugal
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Constância, Portugal
- Average cloud cover in December: 38
The month with the most cloud cover is January (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 12).
Average visibility in December
Constância, Portugal
- Average visibility in December: 9km
The month with the highest visibility is June (10km).
The month with the lowest visibility is January (8km).
