December weather forecastTrelew, Argentina

December

Weather in December

December in Trelew officially marks the return of summer. The temperatures rise to match those seen during January. This month offers a blend of sunny days coupled with moderately low rainfall quantities. The wind in December matches the speed observed in the previous month, only slightly higher. It's worth noting the excellent visibility and less crowded conditions witnessed during December weather in Trelew, making it an ideal time for picnics and outdoor activities.

Temperature

Trelew's transition from November to December introduces an average high-temperature of a moderately hot 25.3°C (77.5°F), marking an insignificant variation from the 22.5°C (72.5°F). During December, the nighttime temperature in Trelew averages to a mild 15.6°C (60.1°F).

Humidity

The months with the lowest humidity are January and December, with an average relative humidity of 36%.

Rainfall

In December, the rain falls for 4.5 days. Throughout December, 6mm (0.24") of precipitation is accumulated. In Trelew, Argentina, during the entire year, the rain falls for 64.5 days and collects up to 108mm (4.25") of precipitation.

Snowfall

January through June, September through December are months without snowfall in Trelew.

Daylight

December has the longest days of the year, with an average of 15h and 18min of daylight.
On the first day of the month, sunrise is at 05:35 and sunset at 20:45. On the last day of December, in Trelew, Argentina, sunrise is at 05:44 and sunset at 21:04 -03.

Sunshine

The month with the most sunshine in Trelew is December, with an average of 12.4h of sunshine.

UV index

January, February and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 6 in December interprets into the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

Updated: Jan 25, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Trelew, is 25.3°C (77.5°F), while the low-temperature averages to 15.6°C (60.1°F).

January and December, with an average relative humidity of 36%, are the least humid months in Trelew.

In December, the average relative humidity in Trelew, Argentina, is 36%.

In Trelew, Argentina, in December, it is raining for 4.5 days, with typically 6mm (0.24") of accumulated precipitation.

In Trelew, Argentina, snow does not fall in January through June, September through December.

December has the longest days of the year, with an average of 15h and 18min of daylight.

The average day length in December in Trelew, Argentina, is 15h and 20min.

In December, on the first day of the month, sunrise is at 05:35 and sunset at 20:45. On the last day of the month, sunrise is at 05:44 and sunset at 21:04 -03.

The month with the most sunshine is December, with an average of 12.4h of sunshine.

The average sunshine duration in December in Trelew is 12.4h.

The months with the highest UV index are January, February and December, with an average maximum UV index of 6.

The average daily maximum UV index in December in Trelew, Argentina, is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

22.5°C

25.3°C

27°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

26.3km/h

26.4km/h

26.1km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

4.5

4.1

Average snowfall

0mm

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

24.2

24.9

25.5

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Trelew, Argentina

Average high temperature in December: 25.3°C

The warmest month (with the highest average high temperature) is January (27°C).
The month with the lowest average high temperature is July (10.9°C).

Average low temperature in December: 15.6°C

The month with the highest average low temperature is January (17.1°C).
The coldest month (with the lowest average low temperature) is July (4.9°C).

Average pressure in December
Trelew, Argentina

Average pressure in December: 1008mbar

The month with the highest atmospheric pressure is September (1015.1mbar).
The month with the lowest atmospheric pressure is December (1008mbar).

Average wind speed in December
Trelew, Argentina

Average wind speed in December: 24.1km/h

The windiest month (with the highest average wind speed) is December (24.1km/h).
The calmest month (with the lowest average wind speed) is May (20.7km/h).

Average humidity in December
Trelew, Argentina

Average humidity in December: 36%

The month with the highest relative humidity is July (58%).
The months with the lowest relative humidity are January and December (36%).

Average rainfall in December
Trelew, Argentina

Average rainfall in December: 6mm

The wettest months (with the highest rainfall) are March and June (16mm).
The driest month (with the least rainfall) is November (5mm).

Average rainfall days in December
Trelew, Argentina

Average rainfall days in December: 4.5 days

The month with the highest number of rainy days is July (7.5 days).
The month with the least rainy days is February (3.7 days).

Average snowfall in December
Trelew, Argentina

Average snowfall in December: 0mm

The months with the highest snowfall are July and August (1mm).
The months with the least snowfall are January, February, March, April, May, June, September, October, November and December (0mm).

Average snowfall days in December
Trelew, Argentina

Average snowfall days in December: 0 days

The months with the highest number of snowfall days are July and August (0.3 days).
The months with the least snowfall days are January, February, March, April, May, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Trelew, Argentina

Average daylight in December: 15h and 18min

The month with the longest days is December (Average daylight: 15h and 18min).
The month with the shortest days is June (Average daylight: 9h and 0min).

Average sunshine in December: 12h and 24min

The month with the most sunshine is December (Average sunshine: 12h and 24min).
The month with the least sunshine is June (Average sunshine: 6h and 30min).

Average sunshine days in December
Trelew, Argentina

Average sunshine days in December: 24.9 days

The month with the most sunshine days is January (25.5 days).
The month with the least sunshine days is June (21.3 days).

Average UV index in December
Trelew, Argentina

Average UV index in December: 6

The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are May, June, July and August (UV index 3).

Average cloud cover in December
Trelew, Argentina

Average cloud cover in December: 18

The month with the most cloud cover is July (Cloud cover 29).
The month with the least cloud cover is January (Cloud cover 14).

Average visibility in December
Trelew, Argentina

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).