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
Relva records an average high-temperature of a still comfortable 17.6°C (63.7°F) as December arrives, nearly mirroring the previous month's climate. Relva's December nights exhibit a subtle drop in temperature, averaging at a still enjoyable 16.3°C (61.3°F), closely aligned with the daytime highs.Humidity
In December, the average relative humidity in Relva, Portugal, is 79%.Rainfall
December is the month with the most rainfall in Relva. Rain falls for 17.7 days and accumulates 89mm (3.5") of precipitation.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of December in Relva, sunrise is at 07:39 and sunset at 17:24. On the last day of the month, sunrise is at 07:58 and sunset at 17:34 -01.
Sunshine
The months with the least sunshine are November and December, with an average of 5h of sunshine.UV index
In Relva, the average daily maximum UV index in December is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 during December leads to these advisories:
Act with care - Obligation to protect against skin and eye damage is highlighted. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Relva?
What is the average humidity in December in Relva?
What is the rainiest month in Relva?
How much does it rain in Relva in December?
What is the month with the shortest days in Relva?
How many hours of daylight does Relva have in December?
When is the sunrise / sunset in December in Relva?
What is the month with the least sunshine in Relva?
How many hours of sunshine does Relva have in December?
What is the UV index intensity in December in Relva?
Average temperature in December
Relva, Portugal
- Average high temperature in December: 17.6°C
The warmest month (with the highest average high temperature) is August (23.2°C).
The month with the lowest average high temperature is March (16°C).
- Average low temperature in December: 16.3°C
The month with the highest average low temperature is August (22.1°C).
The coldest months (with the lowest average low temperature) are February and March (14.7°C).
Average pressure in December
Relva, Portugal
- Average pressure in December: 1020.2mbar
The month with the highest atmospheric pressure is July (1024.4mbar).
The month with the lowest atmospheric pressure is October (1016.9mbar).
Average wind speed in December
Relva, Portugal
- Average wind speed in December: 28.9km/h
The windiest month (with the highest average wind speed) is December (28.9km/h).
The calmest month (with the lowest average wind speed) is July (16.3km/h).
Average humidity in December
Relva, Portugal
- Average humidity in December: 79%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Relva, Portugal
- Average rainfall in December: 89mm
The wettest month (with the highest rainfall) is December (89mm).
The driest month (with the least rainfall) is July (15mm).
Average rainfall days in December
Relva, Portugal
- Average rainfall days in December: 17.7 days
The month with the highest number of rainy days is October (19.1 days).
The month with the least rainy days is July (9.1 days).
Average daylight in December /
Average sunshine in December
Relva, 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 36min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The months with the least sunshine are November and December (Average sunshine: 5h and 0min).
Average sunshine days in December
Relva, Portugal
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is July (16.3 days).
The month with the least sunshine days is October (7.6 days).
Average UV index in December
Relva, Portugal
- Average UV index in December: 5
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February and March (UV index 4).
Average cloud cover in December
Relva, Portugal
- Average cloud cover in December: 50
The month with the most cloud cover is November (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Relva, 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).
