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 transition into December marks the average high-temperature at a still refreshing 16.5°C (61.7°F), differing minimally from November's 18.1°C (64.6°F). December nights in Silves register a minor temperature decline, steadying at a fresh 12.3°C (54.1°F).Humidity
The average relative humidity in December in Silves is 74%.Rainfall
In Silves, in December, during 4.2 rainfall days, 6mm (0.24") of precipitation is typically accumulated. Throughout the year, in Silves, there are 37.2 rainfall days, and 39mm (1.54") of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 07:29 and sunset at 17:16. On the last day of December, in Silves, sunrise is at 07:47 and sunset at 17:26 WET.
Sunshine
The average sunshine in December in Silves is 6.4h.UV index
The months with the lowest UV index in Silves, Portugal, are January through March, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 4 leads to the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What are the temperatures in Silves in December?
What is the average humidity in December in Silves?
How much does it rain in Silves in December?
What is the month with the shortest days in Silves?
What is the average length of the day in December in Silves?
When are sunrise and sunset in December in Silves?
How long on average sun shines in December in Silves?
When is the lowest UV index in Silves?
What is the UV index reading in December in Silves?
Average temperature in December
Silves, Portugal
- Average high temperature in December: 16.5°C
The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is January (15°C).
- Average low temperature in December: 12.3°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 (10.7°C).
Average pressure in December
Silves, 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
Silves, Portugal
- Average wind speed in December: 16.7km/h
The windiest month (with the highest average wind speed) is February (18.2km/h).
The calmest month (with the lowest average wind speed) is September (12.8km/h).
Average humidity in December
Silves, Portugal
- Average humidity in December: 74%
The month with the highest relative humidity is April (76%).
The months with the lowest relative humidity are July and August (66%).
Average rainfall in December
Silves, Portugal
- Average rainfall in December: 6mm
The wettest month (with the highest rainfall) is November (8mm).
The driest months (with the least rainfall) are June, July, August and September (0mm).
Average rainfall days in December
Silves, Portugal
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is April (6.4 days).
The month with the least rainy days is August (0.2 days).
Average daylight in December /
Average sunshine in December
Silves, 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 0min).
Average sunshine days in December
Silves, Portugal
- Average sunshine days in December: 24.7 days
The month with the most sunshine days is July (30.5 days).
The month with the least sunshine days is November (22.1 days).
Average UV index in December
Silves, Portugal
- Average UV index in December: 4
The months with the highest UV index are 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
Silves, Portugal
- Average cloud cover in December: 28
The month with the most cloud cover is January (Cloud cover 32).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Silves, 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).
Silves, Portugal
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