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
December
Weather in December
Temperature
With the arrival of December, Castro Marim's average high-temperature registers at a still refreshing 16.4°C (61.5°F), indicating a subtle variation from the previous month. Castro Marim registers a subtle dip to an average of 11.7°C (53.1°F) during the nights of December.Humidity
The average relative humidity in December in Castro Marim is 73%.Rainfall
In Castro Marim, during December, the rain falls for 5.1 days and regularly aggregates up to 10mm (0.39") of precipitation. Throughout the year, there are 51.4 rainfall days, and 90mm (3.54") of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 07:25 and sunset at 17:12. On the last day of December, in Castro Marim, sunrise is at 07:43 and sunset at 17:22 WET.
Sunshine
In December, the average sunshine is 6.5h.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Castro Marim. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: During December, 4 as the daily maximum UV index converts into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Castro Marim in December?
What is the average humidity in December in Castro Marim?
How many days does it rain in December in Castro Marim?
What is the month with the shortest days in Castro Marim?
What is the average length of the day in December in Castro Marim?
When is the sunrise / sunset in December in Castro Marim?
How many hours of sunshine does Castro Marim have in December?
What are the months with the lowest UV index in Castro Marim?
How high is the UV index in December in Castro Marim?
Average temperature in December
Castro Marim, Portugal
- Average high temperature in December: 16.4°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (14.9°C).
- Average low temperature in December: 11.7°C
The month with the highest average low temperature is August (20.4°C).
The coldest month (with the lowest average low temperature) is February (10.3°C).
Average pressure in December
Castro Marim, Portugal
- Average pressure in December: 1022.5mbar
The month with the highest atmospheric pressure is December (1022.5mbar).
The months with the lowest atmospheric pressure are April and August (1015.3mbar).
Average wind speed in December
Castro Marim, Portugal
- Average wind speed in December: 16.9km/h
The windiest month (with the highest average wind speed) is February (18km/h).
The calmest month (with the lowest average wind speed) is September (12.2km/h).
Average humidity in December
Castro Marim, Portugal
- Average humidity in December: 73%
The month with the highest relative humidity is January (74%).
The months with the lowest relative humidity are July and August (60%).
Average rainfall in December
Castro Marim, Portugal
- Average rainfall in December: 10mm
The wettest months (with the highest rainfall) are April and November (15mm).
The driest months (with the least rainfall) are July and August (1mm).
Average rainfall days in December
Castro Marim, Portugal
- Average rainfall days in December: 5.1 days
The month with the highest number of rainy days is April (8.4 days).
The month with the least rainy days is August (0.8 days).
Average daylight in December /
Average sunshine in December
Castro Marim, 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 3min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in December
Castro Marim, Portugal
- Average sunshine days in December: 24.8 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is April (20 days).
Average UV index in December
Castro Marim, 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
Castro Marim, Portugal
- Average cloud cover in December: 26
The months with the most cloud cover are January and April (Cloud cover 29).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Castro Marim, 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).
