December weather forecastSan Carlos, Uruguay
December weather forecast for San Carlos, Uruguay: The first month of the summer, December, is a moderately hot month in San Carlos, Uruguay, with an average temperature varying between 23.4°C (74.1°F) and 18.1°C (64.6°F). In San Carlos, in December, it is raining for 11.1 days, with typically 70mm (2.76") of accumulated precipitation.
December
Weather in December
The first month of the summer, December, is a moderately hot month in San Carlos, Uruguay, with an average temperature varying between 23.4°C (74.1°F) and 18.1°C (64.6°F).Temperature
The onset of December brings with it an average high-temperature of a warm 23.4°C (74.1°F), showing a negligible variation from the month before. During the month of December, an average temperature of 18.1°C (64.6°F) is noted during the nights in San Carlos.Humidity
The average relative humidity in December is 72%.Rainfall
In San Carlos, in December, it is raining for 11.1 days, with typically 70mm (2.76") of accumulated precipitation. In San Carlos, during the entire year, the rain falls for 136.9 days and collects up to 714mm (28.11") of precipitation.Daylight
December has the longest days of the year, with an average of 14h and 24min of daylight.On the first day of the month, sunrise is at 05:19 and sunset at 19:38. On the last day of December, sunrise is at 05:29 and sunset at 19:56 -03.
Sunshine
In San Carlos, the average sunshine in December is 10.6h.UV index
January through March and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 6 during December translates into the following directions:
Fend off overexposure. Sun protection is vital. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Carlos, Uruguay
- Average high temperature in December: 23.4°C
The warmest month (with the highest average high temperature) is January (25.3°C).
The month with the lowest average high temperature is July (13.2°C).
- Average low temperature in December: 18.1°C
The month with the highest average low temperature is February (20.3°C).
The coldest month (with the lowest average low temperature) is July (9.7°C).
Average pressure in December
San Carlos, Uruguay
- Average pressure in December: 1011.5mbar
The month with the highest atmospheric pressure is July (1018.9mbar).
The month with the lowest atmospheric pressure is December (1011.5mbar).
Average wind speed in December
San Carlos, Uruguay
- Average wind speed in December: 19.7km/h
The windiest months (with the highest average wind speed) are June and September (21.3km/h).
The calmest month (with the lowest average wind speed) is May (19.1km/h).
Average humidity in December
San Carlos, Uruguay
- Average humidity in December: 72%
The months with the highest relative humidity are July, August and September (79%).
The month with the lowest relative humidity is January (71%).
Average rainfall in December
San Carlos, Uruguay
- Average rainfall in December: 70mm
The wettest month (with the highest rainfall) is July (74mm).
The driest month (with the least rainfall) is January (44mm).
Average rainfall days in December
San Carlos, Uruguay
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is March (14.3 days).
The months with the least rainy days are June, August and September (10.2 days).
Average daylight in December /
Average sunshine in December
San Carlos, Uruguay
- Average daylight in December: 14h and 24min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in December: 10h and 36min
The month with the most sunshine is January (Average sunshine: 10h and 54min).
The month with the least sunshine is July (Average sunshine: 5h and 24min).
Average sunshine days in December
San Carlos, Uruguay
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is August (19.3 days).
The month with the least sunshine days is March (13.6 days).
Average UV index in December
San Carlos, Uruguay
- Average UV index in December: 6
The months with the highest UV index are January, February, March and December (UV index 6).
The month with the lowest UV index is July (UV index 3).
Average cloud cover in December
San Carlos, Uruguay
- Average cloud cover in December: 24
The month with the most cloud cover is July (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 22).
Average visibility in December
San Carlos, Uruguay
- 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).





