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 commencement of December introduces an average high-temperature of a still refreshing 15.6°C (60.1°F), closely mirroring the preceding month. Rio de Mouro, during December nights, witnesses an average temperature marginally cooler than its daytime highs, at a fresh 12°C (53.6°F).Humidity
The average relative humidity in December is 75%.Rainfall
In December, the rain falls for 11.2 days. Throughout December, 52mm (2.05") of precipitation is accumulated. Throughout the year, there are 111.2 rainfall days, and 361mm (14.21") of precipitation is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Rio de Mouro.On the first day of the month, sunrise is at 07:36 and sunset at 17:16. On the last day of December, in Rio de Mouro, sunrise is at 07:55 and sunset at 17:25 WET.
Sunshine
The average sunshine in December in Rio de Mouro is 6h.UV index
The months with the lowest UV index in Rio de Mouro are January through March, November and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 in December translates into this advice:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the average December temperature in Rio de Mouro?
What is the average humidity in December in Rio de Mouro?
How much does it rain in Rio de Mouro in December?
What is the month with the shortest days in Rio de Mouro?
How many hours of daylight does Rio de Mouro have in December?
What time are sunrise and sunset in December in Rio de Mouro?
How many hours of sunshine does Rio de Mouro have in December?
What is the month with the lowest UV index in Rio de Mouro?
How high is the UV index in December in Rio de Mouro?
Average temperature in December
Rio de Mouro, Portugal
- Average high temperature in December: 15.6°C
The warmest month (with the highest average high temperature) is August (23.8°C).
The month with the lowest average high temperature is January (14.6°C).
- Average low temperature in December: 12°C
The month with the highest average low temperature is August (18.5°C).
The coldest month (with the lowest average low temperature) is February (10.9°C).
Average pressure in December
Rio de Mouro, 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 (1015.7mbar).
Average wind speed in December
Rio de Mouro, Portugal
- Average wind speed in December: 18.5km/h
The windiest month (with the highest average wind speed) is February (20.3km/h).
The calmest month (with the lowest average wind speed) is October (16.2km/h).
Average humidity in December
Rio de Mouro, Portugal
- Average humidity in December: 75%
The month with the highest relative humidity is July (77%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Rio de Mouro, Portugal
- Average rainfall in December: 52mm
The wettest month (with the highest rainfall) is November (67mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in December
Rio de Mouro, Portugal
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is November (15.1 days).
The month with the least rainy days is August (2 days).
Average daylight in December /
Average sunshine in December
Rio de Mouro, 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: 6h and 0min
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 24min).
Average sunshine days in December
Rio de Mouro, Portugal
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is August (27.7 days).
The month with the least sunshine days is November (12.8 days).
Average UV index in December
Rio de Mouro, Portugal
- Average UV index in December: 4
The month with the highest UV index is August (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
Rio de Mouro, 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 15).
Average visibility in December
Rio de Mouro, 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).
Rio de Mouro, Portugal
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