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 dawn of December sees an average high-temperature of a still comfortable 16.2°C (61.2°F), subtly contrasting with November's 18°C (64.4°F). Nighttime temperatures record an average of 11.5°C (52.7°F) throughout December.Humidity
In Alte, the average relative humidity in December is 75%.Rainfall
In Alte, during December, the rain falls for 3.8 days and regularly aggregates up to 8mm (0.31") of precipitation. In Alte, during the entire year, the rain falls for 45.8 days and collects up to 63mm (2.48") of precipitation.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of December in Alte, sunrise is at 07:28 and sunset at 17:15. On the last day of the month, sunrise is at 07:46 and sunset at 17:25 WET.
Sunshine
In December, the average sunshine in Alte, Portugal, is 6.4h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A daily maximum UV index of 4 in December translates into the following instructions:
Undertake protective steps - Recommendations to avoid sunburn are issued. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What are December temperatures in Alte?
What is the average humidity in December in Alte?
How much does it rain in Alte in December?
What is the month with the shortest days in Alte?
How many hours of daylight does Alte have in December?
What time are sunrise and sunset in December in Alte?
How many hours of sunshine does Alte have in December?
When is the lowest UV index in Alte?
How high is the UV index in December in Alte?
Average temperature in December
Alte, Portugal
- Average high temperature in December: 16.2°C
The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (14.9°C).
- Average low temperature in December: 11.5°C
The month with the highest average low temperature is August (19.7°C).
The coldest month (with the lowest average low temperature) is February (10.2°C).
Average pressure in December
Alte, Portugal
- Average pressure in December: 1022.5mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in December
Alte, Portugal
- Average wind speed in December: 16.1km/h
The windiest months (with the highest average wind speed) are February and March (17.5km/h).
The calmest month (with the lowest average wind speed) is September (12.2km/h).
Average humidity in December
Alte, Portugal
- Average humidity in December: 75%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (62%).
Average rainfall in December
Alte, Portugal
- Average rainfall in December: 8mm
The wettest month (with the highest rainfall) is November (13mm).
The driest month (with the least rainfall) is July (0mm).
Average rainfall days in December
Alte, Portugal
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is April (7.5 days).
The month with the least rainy days is August (0.5 days).
Average daylight in December /
Average sunshine in December
Alte, 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: 6h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).
Average sunshine days in December
Alte, Portugal
- Average sunshine days in December: 26.3 days
The months with the most sunshine days are July and August (29.8 days).
The month with the least sunshine days is April (20 days).
Average UV index in December
Alte, 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, November and December (UV index 4).
Average cloud cover in December
Alte, Portugal
- Average cloud cover in December: 28
The month with the most cloud cover is January (Cloud cover 31).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in December
Alte, 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).
Alte, Portugal
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