December weather forecastTomatlán, Mexico
December
Weather in December
The first month of the winter, December, is also a moderately hot month in Tomatlán, Mexico, with an average temperature ranging between min 19.4°C (66.9°F) and max 29.3°C (84.7°F).Temperature
Tomatlán's lowest average temperatures are recorded in January and December, reaching a high of 29.3°C (84.7°F).Heat index
December's mean heat index is appraised at a tropical 33°C (91.4°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humidity
The average relative humidity in December in Tomatlán, Mexico, is 66%.Rainfall
In Tomatlán, in December, during 4.1 rainfall days, 11mm (0.43") of precipitation is typically accumulated. Throughout the year, in Tomatlán, Mexico, there are 112.5 rainfall days, and 565mm (22.24") of precipitation is accumulated.Daylight
December has the shortest days of the year in Tomatlán, Mexico, with an average of 11h and 0min of daylight.On the first day of December, sunrise is at 7:20 am and sunset at 6:20 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 6:32 pm CST.
Sunshine
The average sunshine in December in Tomatlán, Mexico, is 9.7h.UV index
The months with the lowest UV index in Tomatlán are January through March, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 6 in December translates into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Tomatlán, Mexico
- Average high temperature in December: 29.3°C
The warmest months (with the highest average high temperature) are May and July (32.4°C).
The months with the lowest average high temperature are January and December (29.3°C).
- Average low temperature in December: 19.4°C
The month with the highest average low temperature is July (23.5°C).
The coldest month (with the lowest average low temperature) is February (18.3°C).
Average pressure in December
Tomatlán, Mexico
- Average pressure in December: 1013.6mbar
The month with the highest atmospheric pressure is January (1014.2mbar).
The month with the lowest atmospheric pressure is September (1010.6mbar).
Average wind speed in December
Tomatlán, Mexico
- Average wind speed in December: 6.9km/h
The windiest month (with the highest average wind speed) is April (7.6km/h).
The calmest month (with the lowest average wind speed) is July (6.4km/h).
Average humidity in December
Tomatlán, Mexico
- Average humidity in December: 66%
The month with the highest relative humidity is September (80%).
The months with the lowest relative humidity are March and April (57%).
Average rainfall in December
Tomatlán, Mexico
- Average rainfall in December: 11mm
The wettest month (with the highest rainfall) is September (186mm).
The driest month (with the least rainfall) is April (0mm).
Average rainfall days in December
Tomatlán, Mexico
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is August (22.8 days).
The month with the least rainy days is March (1.2 days).
Average daylight in December /
Average sunshine in December
Tomatlán, Mexico
- Average daylight in December: 11h and 0min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in December: 9h and 42min
The months with the most sunshine are January, March, April and May (Average sunshine: 9h and 48min).
The month with the least sunshine is September (Average sunshine: 8h and 54min).
Average sunshine days in December
Tomatlán, Mexico
- Average sunshine days in December: 26 days
The month with the most sunshine days is March (30.2 days).
The month with the least sunshine days is September (6 days).
Average UV index in December
Tomatlán, Mexico
- Average UV index in December: 6
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 6).
Average cloud cover in December
Tomatlán, Mexico
- Average cloud cover in December: 11
The months with the most cloud cover are August and September (Cloud cover 33).
The month with the least cloud cover is March (Cloud cover 8).
Average visibility in December
Tomatlán, 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, September and October (9km).
