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
December
Weather in December
Temperature
Entering December, Santana's average high-temperature reads a refreshing 18.7°C (65.7°F), indicating a close resemblance to the previous month's climate. Santana, during December nights, experiences a subtle shift to a low average of 17.5°C (63.5°F) from the day's heat.Humidity
The average relative humidity in December is 74%.Rainfall
In Santana, in December, it is raining for 13.4 days, with typically 27mm (1.06") of accumulated precipitation. Throughout the year, there are 116.4 rainfall days, and 232mm (9.13") of precipitation is accumulated.Sea temperature
In Santana, in December, the average water temperature is 19°C (66.2°F).Note: For the majority of people, swimming in water at 19°C (66.2°F) is not enjoyable. The challenge of controlling breathing escalates as the temperature decreases from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 07:52 and sunset at 18:01. On the last day of the month, sunrise is at 08:09 and sunset at 18:11 WET.
Sunshine
The months with the least sunshine are January and December, with an average of 7.6h of sunshine.UV index
The months with the lowest UV index are January through June, November and December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum UV index of 5 in December translates into the following recommendations:
Act with care - The need to guard against sun damage is communicated. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
How much does it rain in Santana in December?
What is the sea water temperature in December?
What is the month with the shortest days?
What is the average length of the day in December in Santana?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Santana have in December?
When is the lowest UV index?
How high is the UV index in December in Santana?
Average temperature in December
Santana, Portugal
- Average high temperature in December: 18.7°C
The warmest month (with the highest average high temperature) is August (23°C).
The months with the lowest average high temperature are February and March (16.9°C).
- Average low temperature in December: 17.5°C
The month with the highest average low temperature is September (21.7°C).
The coldest month (with the lowest average low temperature) is March (15.1°C).
Average pressure in December
Santana, Portugal
- Average pressure in December: 1022.4mbar
The month with the highest atmospheric pressure is January (1024.1mbar).
The month with the lowest atmospheric pressure is October (1017mbar).
Average wind speed in December
Santana, Portugal
- Average wind speed in December: 22.3km/h
The windiest month (with the highest average wind speed) is February (23km/h).
The calmest month (with the lowest average wind speed) is September (17.7km/h).
Average humidity in December
Santana, Portugal
- Average humidity in December: 74%
The months with the highest relative humidity are June and August (80%).
The month with the lowest relative humidity is February (73%).
Average rainfall in December
Santana, Portugal
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is October (44mm).
The driest month (with the least rainfall) is August (3mm).
Average rainfall days in December
Santana, Portugal
- Average rainfall days in December: 13.4 days
The month with the highest number of rainy days is November (16 days).
The month with the least rainy days is August (3.9 days).
Average sea temperature in December
Santana, Portugal
- Average sea temperature in December: 19°C
The best months for swimming (with the highest average sea temperature) are August and September (23°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (18°C).
Average daylight in December /
Average sunshine in December
Santana, Portugal
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 7h and 4min
The month with the most sunshine is June (Average sunshine: 9h and 12min).
The months with the least sunshine are January and December (Average sunshine: 7h and 36min).
Average sunshine days in December
Santana, Portugal
- Average sunshine days in December: 12 days
The month with the most sunshine days is August (20.9 days).
The month with the least sunshine days is November (8.4 days).
Average UV index in December
Santana, Portugal
- Average UV index in December: 5
The months with the highest UV index are July, August, September and October (UV index 6).
The months with the lowest UV index are January, February, March, April, May, June, November and December (UV index 5).
Average cloud cover in December
Santana, Portugal
- Average cloud cover in December: 39
The month with the most cloud cover is November (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Santana, 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).
