December weather forecastSan José Chiltepec, Mexico

December

Weather in December

The first month of the winter, December, is still a warm month in San José Chiltepec, Mexico, with an average temperature ranging between min 17.1°C (62.8°F) and max 25.9°C (78.6°F).

Temperature

San José Chiltepec sees the arrival of December with an average high-temperature of a still warm 25.9°C (78.6°F), indicating a subtle variation from November. December in San José Chiltepec generally records an average low-temperature of 17.1°C (62.8°F).

Humidity

The months with the highest humidity are January, September, November and December, with an average relative humidity of 83%.

Rainfall

In San José Chiltepec, Mexico, in December, during 11.9 rainfall days, 35mm (1.38") of precipitation is typically accumulated. Throughout the year, there are 209 rainfall days, and 998mm (39.29") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 11h and 6min of daylight.
On the first day of December in San José Chiltepec, sunrise is at 6:40 am and sunset at 5:47 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:00 pm CST.

Sunshine

The months with the least sunshine are November and December, with an average of 5.8h of sunshine.

UV index

In San José Chiltepec, the average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 6 during December translates into the following directions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

December temperatures vary between a high-temperature of 25.9°C (78.6°F) and a low-temperature of 17.1°C (62.8°F). In October, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 35°C (95°F).

January, September, November and December, with an average relative humidity of 83%, are most humid months.

In December, the average relative humidity in San José Chiltepec is 83%.

In San José Chiltepec, during December, the rain falls for 11.9 days and regularly aggregates up to 35mm (1.38") of precipitation.

The month with the shortest days in San José Chiltepec is December, with an average of 11h and 6min of daylight.

In San José Chiltepec, Mexico, the average day length in December is 11h and 5min.

In December, on the first day of the month, sunrise is at 6:40 am and sunset at 5:47 pm. On the last day of the month, in San José Chiltepec, Mexico, sunrise is at 6:55 am and sunset at 6:00 pm CST.

November and December, with an average of 5.8h of sunshine, are months with the least sunshine.

In December, the average sunshine duration is 5.8h.

The average daily maximum UV index in December is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
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
San José Chiltepec, Mexico

  • Average high temperature in December: 25.9°C

The warmest month (with the highest average high temperature) is May (36°C).
The month with the lowest average high temperature is January (24.7°C).

  • Average low temperature in December: 17.1°C

The month with the highest average low temperature is May (23.3°C).
The coldest month (with the lowest average low temperature) is January (15.8°C).

Average pressure in December
San José Chiltepec, Mexico

  • Average pressure in December: 1017.4mbar

The month with the highest atmospheric pressure is January (1018.7mbar).
The month with the lowest atmospheric pressure is May (1012.7mbar).

Average wind speed in December
San José Chiltepec, Mexico

  • Average wind speed in December: 5.6km/h

The windiest month (with the highest average wind speed) is April (6.8km/h).
The calmest month (with the lowest average wind speed) is December (5.6km/h).

Average humidity in December
San José Chiltepec, Mexico

  • Average humidity in December: 83%

The months with the highest relative humidity are January, September, November and December (83%).
The month with the lowest relative humidity is May (63%).

Average rainfall in December
San José Chiltepec, Mexico

  • Average rainfall in December: 35mm

The wettest month (with the highest rainfall) is June (167mm).
The driest month (with the least rainfall) is March (23mm).

Average rainfall days in December
San José Chiltepec, Mexico

  • Average rainfall days in December: 11.9 days

The month with the highest number of rainy days is July (27.2 days).
The month with the least rainy days is April (9.8 days).

Average daylight in December /
Average sunshine in December
San José Chiltepec, Mexico

  • Average daylight in December: 11h and 6min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

  • Average sunshine in December: 5h and 48min

The month with the most sunshine is May (Average sunshine: 11h and 0min).
The months with the least sunshine are November and December (Average sunshine: 5h and 48min).

Average sunshine days in December
San José Chiltepec, Mexico

  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is March (18.2 days).
The month with the least sunshine days is July (2.8 days).

Average UV index in December
San José Chiltepec, Mexico

  • Average UV index in December: 6

The months with the highest UV index are March, April, May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 5).

Average cloud cover in December
San José Chiltepec, Mexico

  • Average cloud cover in December: 43

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is April (Cloud cover 23).

Average visibility in December
San José Chiltepec, Mexico

  • Average visibility in December: 8km

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