Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
Umán experiences a subtle adjustment in high-temperatures to a still warm 29.1°C (84.4°F) with the onset of December, maintaining near parity with November's 29.6°C (85.3°F). During the month of December, Umán experiences a steady low-temperature average of 19.5°C (67.1°F).Heat index
December's average heat index is appraised at a tropical 34°C (93.2°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.Realize that the values for the heat index are set for shaded places and light winds. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In December, the average relative humidity in Umán is 75%.Rainfall
In December, in Umán, the rain falls for 11.5 days. Throughout December, 24mm (0.94") of precipitation is accumulated. Throughout the year, there are 167.3 rainfall days, and 536mm (21.1") of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 10h and 54min of daylight.On the first day of the month, sunrise is at 6:19 am and sunset at 5:16 pm. On the last day of December, sunrise is at 6:35 am and sunset at 5:29 pm CST.
Sunshine
In Umán, the average sunshine in December is 6.3h.UV index
The months with the lowest UV index in Umán are January, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high UV index of 6 in December translates into the following recommendations:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot does it get in Umán in December?
What is the average humidity in December in Umán?
How many days does it rain in December in Umán?
What is the month with the shortest days in Umán?
What is the average length of the day in December in Umán?
When is the sunrise / sunset in December in Umán?
How many hours of sunshine does Umán have in December?
When is the lowest UV index in Umán?
How high is the UV index in December in Umán?
Average temperature in December
Umán, Mexico
- Average high temperature in December: 29.1°C
The warmest month (with the highest average high temperature) is May (35.4°C).
The month with the lowest average high temperature is January (28.1°C).
- Average low temperature in December: 19.5°C
The month with the highest average low temperature is June (24.3°C).
The coldest month (with the lowest average low temperature) is January (18.6°C).
Average pressure in December
Umán, Mexico
- Average pressure in December: 1016.4mbar
The month with the highest atmospheric pressure is January (1017.6mbar).
The month with the lowest atmospheric pressure is September (1011.9mbar).
Average wind speed in December
Umán, Mexico
- Average wind speed in December: 13.5km/h
The windiest month (with the highest average wind speed) is March (16.1km/h).
The calmest month (with the lowest average wind speed) is September (10.6km/h).
Average humidity in December
Umán, Mexico
- Average humidity in December: 75%
The months with the highest relative humidity are September and October (78%).
The months with the lowest relative humidity are April and May (63%).
Average rainfall in December
Umán, Mexico
- Average rainfall in December: 24mm
The wettest month (with the highest rainfall) is June (99mm).
The driest months (with the least rainfall) are February and March (12mm).
Average rainfall days in December
Umán, Mexico
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is September (20.4 days).
The months with the least rainy days are February and March (7.2 days).
Average daylight in December /
Average sunshine in December
Umán, Mexico
- Average daylight in December: 10h and 5min
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 2min
The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in December
Umán, Mexico
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is March (21.8 days).
The month with the least sunshine days is October (8.5 days).
Average UV index in December
Umán, Mexico
- Average UV index in December: 6
The months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, November and December (UV index 6).
Average cloud cover in December
Umán, Mexico
- Average cloud cover in December: 33
The month with the most cloud cover is January (Cloud cover 36).
The months with the least cloud cover are March and April (Cloud cover 25).
Average visibility in December
Umán, Mexico
- Average visibility in December: 9km
The months with the highest visibility are February, March, April, May and June (10km).
The month with the lowest visibility is September (8km).
