December weather forecastChalma, Mexico

December

Weather in December

December, the first month of the winter in Chalma, is also an agreeable month, with an average temperature ranging between max 22.8°C (73°F) and min 12.5°C (54.5°F).

Temperature

Chalma's average high-temperature in December is an agreeable 22.8°C (73°F), indicating a subtle variation from November. Throughout the month of December, Chalma witnesses an average temperature of 12.5°C (54.5°F).

Humidity

The average relative humidity in December in Chalma is 79%.

Rainfall

December is the month with the least rainfall. Rain falls for 11.9 days and accumulates 20mm (0.79") of precipitation.

Daylight

The month with the shortest days is December, with an average of 10h and 54min of daylight.
On the first day of December, sunrise is at 6:54 am and sunset at 5:50 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:03 pm CST.

Sunshine

In December, the average sunshine in Chalma is 6.8h.

UV index

January, February, October through December, with an average maximum UV index of 5, are months with the lowest UV index in Chalma. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 5 translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.

Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature in Chalma, Mexico, during December is 22.8°C (73°F) and the low-temperature is 12.5°C (54.5°F). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 33°C (91.4°F).

In December, the average relative humidity is 79%.

The month with the least rainfall in Chalma is December, when the rain falls for 11.9 days and typically collects 20mm (0.79") of precipitation.

In Chalma, in December, during 11.9 rainfall days, 20mm (0.79") of precipitation is typically accumulated.

December has the shortest days of the year in Chalma, with an average of 10h and 54min of daylight.

The average day length in December in Chalma is 10h and 52min.

On the first day of December, sunrise is at 6:54 am and sunset at 5:50 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:03 pm CST.

The average sunshine duration in December in Chalma, Mexico, is 6.8h.

The months with the lowest UV index in Chalma are January, February, October through December, with an average maximum UV index of 5.

In Chalma, the average daily maximum UV index in December is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability 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

23.5°C

22.8°C

21.8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.5km/h

5.6km/h

5.9km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

16.5

Average UV index

Average cloud cover

42%

37%

Average visibility

8km

Average temperature in December
Chalma, Mexico

Average high temperature in December: 22.8°C

The warmest month (with the highest average high temperature) is May (32°C).
The month with the lowest average high temperature is January (21.8°C).

Average low temperature in December: 12.5°C

The month with the highest average low temperature is June (19.3°C).
The coldest month (with the lowest average low temperature) is January (10.9°C).

Average pressure in December
Chalma, Mexico

Average pressure in December: 1018mbar

The month with the highest atmospheric pressure is January (1019.3mbar).
The month with the lowest atmospheric pressure is May (1013mbar).

Average wind speed in December
Chalma, Mexico

Average wind speed in December: 5km/h

The windiest month (with the highest average wind speed) is April (6.6km/h).
The calmest month (with the lowest average wind speed) is November (4.8km/h).

Average humidity in December
Chalma, Mexico

Average humidity in December: 79%

The month with the highest relative humidity is September (83%).
The month with the lowest relative humidity is April (67%).

Average rainfall in December
Chalma, Mexico

Average rainfall in December: 20mm

The wettest month (with the highest rainfall) is September (114mm).
The driest month (with the least rainfall) is December (20mm).

Average rainfall days in December
Chalma, Mexico

Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is September (22.4 days).
The month with the least rainy days is February (10.6 days).

Average daylight in December /
Average sunshine in December
Chalma, Mexico

Average daylight in December: 10h and 54min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

Average sunshine in December: 6h and 48min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is November (Average sunshine: 6h and 12min).

Average sunshine days in December
Chalma, Mexico

Average sunshine days in December: 16.5 days

The month with the most sunshine days is January (17 days).
The month with the least sunshine days is September (6.5 days).

Average UV index in December
Chalma, Mexico

Average UV index in December: 5

The months with the highest UV index are March, April, May, June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 5).