December weather forecastTonalá, Mexico

December

Weather in December

The first month of the winter, December, is also a moderately hot month in Tonalá, Mexico, with an average temperature fluctuating between 23.5°C (74.3°F) and 9.9°C (49.8°F).

Temperature

In Tonalá, December is the month with the lowest recorded average temperatures, measuring a high of 23.5°C (74.3°F) and a low of 9.9°C (49.8°F).

Humidity

In December, the average relative humidity is 57%.

Rainfall

In Tonalá, in December, during 3.9 rainfall days, 6mm (0.24") of precipitation is typically accumulated. In Tonalá, during the entire year, the rain falls for 154.5 days and collects up to 719mm (28.31") of precipitation.

Daylight

With an average of 10h and 54min of daylight, December has the shortest days of the year in Tonalá.
On the first day of the month, sunrise is at 7:13 am and sunset at 6:11 pm. On the last day of December, in Tonalá, sunrise is at 7:29 am and sunset at 6:23 pm CST.

Sunshine

In December, the average sunshine is 9.8h.

UV index

The average daily maximum UV index in December in Tonalá is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 5 in December transforms into this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Frequently asked questions

The lowest temperatures in Tonalá, Mexico, are recorded in December, with averages reaching a high of 23.5°C (74.3°F) and a low of 9.9°C (49.8°F).

In Tonalá, 23.5°C (74.3°F) is the average high-temperature and 9.9°C (49.8°F) is the average low-temperature during December. In June, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 33°C (91.4°F).

The average relative humidity in December in Tonalá, Mexico, is 57%.

In Tonalá, Mexico, in December, it is raining for 3.9 days, with typically 6mm (0.24") of accumulated precipitation.

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

The average day length in December in Tonalá is 10h and 55min.

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 6:11 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 6:23 pm CST.

In December, the average sunshine duration is 9.8h.

In Tonalá, the average daily maximum UV index in December is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Tonalá, Mexico

  • Average high temperature in December: 23.5°C

The warmest month (with the highest average high temperature) is May (32.4°C).
The month with the lowest average high temperature is December (23.5°C).

  • Average low temperature in December: 9.9°C

The month with the highest average low temperature is June (17.9°C).
The coldest month (with the lowest average low temperature) is January (9.2°C).

Average pressure in December
Tonalá, Mexico

  • Average pressure in December: 1016.3mbar

The month with the highest atmospheric pressure is January (1016.7mbar).
The month with the lowest atmospheric pressure is May (1012.6mbar).

Average wind speed in December
Tonalá, Mexico

  • Average wind speed in December: 5.2km/h

The windiest month (with the highest average wind speed) is April (7.8km/h).
The calmest month (with the lowest average wind speed) is July (4.6km/h).

Average humidity in December
Tonalá, Mexico

  • Average humidity in December: 57%

The month with the highest relative humidity is September (82%).
The month with the lowest relative humidity is April (36%).

Average rainfall in December
Tonalá, Mexico

  • Average rainfall in December: 6mm

The wettest month (with the highest rainfall) is July (187mm).
The driest month (with the least rainfall) is April (2mm).

Average rainfall days in December
Tonalá, Mexico

  • Average rainfall days in December: 3.9 days

The month with the highest number of rainy days is July (29.3 days).
The month with the least rainy days is April (2.2 days).

Average daylight in December /
Average sunshine in December
Tonalá, 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: 9h and 48min

The month with the most sunshine is May (Average sunshine: 9h and 54min).
The month with the least sunshine is July (Average sunshine: 8h and 42min).

Average sunshine days in December
Tonalá, Mexico

  • Average sunshine days in December: 26.5 days

The month with the most sunshine days is January (27.3 days).
The month with the least sunshine days is July (0.7 days).

Average UV index in December
Tonalá, Mexico

  • Average UV index in December: 5

The month with the highest UV index is May (UV index 7).
The month with the lowest UV index is January (UV index 4).

Average cloud cover in December
Tonalá, Mexico

  • Average cloud cover in December: 12

The month with the most cloud cover is July (Cloud cover 43).
The months with the least cloud cover are March and April (Cloud cover 9).

Average visibility in December
Tonalá, Mexico

  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The months with the lowest visibility are July, August and September (8km).