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
Weather in December
Temperature
San Mateo del Mar notes an average high-temperature of a still warm 28.8°C (83.8°F) in December, displaying minor variation from November. Nighttime temperature in San Mateo del Mar experiences an average drop to an agreeable 22°C (71.6°F) in December.Heat index
The heat index value during December is computed to be a hot 32°C (89.6°F). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.Heat index values are typically calculated for conditions of shade and a light breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Humidity
The average relative humidity in December is 67%.Rainfall
In December, the rain falls for 2.5 days. Throughout December, 3mm (0.12") of precipitation is accumulated. In San Mateo del Mar, during the entire year, the rain falls for 139 days and collects up to 719mm (28.31") of precipitation.Daylight
The month with the shortest days is December, with an average of 11h and 12min of daylight.On the first day of December, sunrise is at 6:32 am and sunset at 5:46 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 5:58 pm CST.
Sunshine
With an average of 7.6h of sunshine, December has the least sunshine of the year in San Mateo del Mar.UV index
February through October and December, with an average maximum UV index of 7, are months with the highest UV index in San Mateo del Mar, Mexico. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 7 in December translates into the following recommendations:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete 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 is December in San Mateo del Mar?
What is the average humidity in December in San Mateo del Mar?
How much does it rain in San Mateo del Mar in December?
What is the month with the shortest days in San Mateo del Mar?
How many hours of daylight does San Mateo del Mar have in December?
What time are sunrise and sunset in December in San Mateo del Mar?
What is the month with the least sunshine in San Mateo del Mar?
How long on average sun shines in December in San Mateo del Mar?
What are the months with the highest UV index in San Mateo del Mar?
How high is the UV index in December in San Mateo del Mar?
Average temperature in December
San Mateo del Mar, Mexico
- Average high temperature in December: 28.8°C
The warmest month (with the highest average high temperature) is May (32.6°C).
The month with the lowest average high temperature is January (27.9°C).
- Average low temperature in December: 22°C
The month with the highest average low temperature is May (25.9°C).
The coldest month (with the lowest average low temperature) is January (21.1°C).
Average pressure in December
San Mateo del Mar, Mexico
- Average pressure in December: 1014.1mbar
The month with the highest atmospheric pressure is January (1015mbar).
The month with the lowest atmospheric pressure is May (1011.1mbar).
Average wind speed in December
San Mateo del Mar, Mexico
- Average wind speed in December: 22.8km/h
The windiest month (with the highest average wind speed) is January (24.9km/h).
The calmest month (with the lowest average wind speed) is June (11.6km/h).
Average humidity in December
San Mateo del Mar, Mexico
- Average humidity in December: 67%
The month with the highest relative humidity is September (74%).
The month with the lowest relative humidity is March (64%).
Average rainfall in December
San Mateo del Mar, Mexico
- Average rainfall in December: 3mm
The wettest month (with the highest rainfall) is August (164mm).
The driest month (with the least rainfall) is January (1mm).
Average rainfall days in December
San Mateo del Mar, Mexico
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is June (24.3 days).
The months with the least rainy days are January and February (1.7 days).
Average daylight in December /
Average sunshine in December
San Mateo del Mar, Mexico
- Average daylight in December: 11h and 1min
The month with the longest days is June (Average daylight: 13h and 6min).
The month with the shortest days is December (Average daylight: 11h and 12min).
- Average sunshine in December: 7h and 4min
The month with the most sunshine is May (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 7h and 36min).
Average sunshine days in December
San Mateo del Mar, Mexico
- Average sunshine days in December: 27.9 days
The month with the most sunshine days is January (28.6 days).
The month with the least sunshine days is June (4.8 days).
Average UV index in December
San Mateo del Mar, Mexico
- Average UV index in December: 7
The months with the highest UV index are February, March, April, May, June, July, August, September, October and December (UV index 7).
The months with the lowest UV index are January and November (UV index 6).
Average cloud cover in December
San Mateo del Mar, Mexico
- Average cloud cover in December: 9
The month with the most cloud cover is June (Cloud cover 35).
The months with the least cloud cover are January, February and December (Cloud cover 9).
Average visibility in December
San Mateo del Mar, Mexico
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
San Mateo del Mar, Mexico
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