December weather forecastManzanillo, Mexico
December
Weather in December
December, the first month of the winter in Manzanillo, is still a warm month, with temperature in the range of an average high of 28.1°C (82.6°F) and an average low of 22.1°C (71.8°F).The perfect water temperature of 27°C (80.6°F) with 13mm (0.51") of accumulated rainfall and only 4.8 rainfall days, makes December a great period for swimming and other water activities.
Temperature
As Manzanillo welcomes December, the average high-temperature records at a still warm 28.1°C (82.6°F), marking an insignificant deviation from the prior month. December nights experience a consistent temperature drop to an agreeable 22.1°C (71.8°F).Heat index
The heat index value for December is calculated to be a tropical 31°C (87.8°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', binds temperature metrics with humidity values to give a sense of the actual warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
In December, the average relative humidity is 69%.Rainfall
In December, the rain falls for 4.8 days. Throughout December, 13mm (0.51") of precipitation is accumulated. In Manzanillo, Mexico, during the entire year, the rain falls for 135.5 days and collects up to 674mm (26.54") of precipitation.Sea temperature
In Manzanillo, the average seawater temperature in December is 27°C (80.6°F).Note: Engaging in swimming, diving, or other water activities is highly enjoyable in temperatures ranging from 25°C (77°F) to 29°C (84.2°F), without any unpleasant sensations for prolonged durations.
Daylight
December has the shortest days of the year, with an average of 11h and 0min of daylight.On the first day of the month, sunrise is at 7:14 am and sunset at 6:18 pm. On the last day of December, sunrise is at 7:30 am and sunset at 6:30 pm CST.
Sunshine
The average sunshine in December is 9.7h.UV index
The months with the lowest UV index 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 health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 6 translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Boost your sun resistance with garments that are densely woven yet spacious. Attention! The reflection of both water and sand can increase the intensity of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Manzanillo, Mexico
- Average high temperature in December: 28.1°C
The warmest month (with the highest average high temperature) is July (30.3°C).
The month with the lowest average high temperature is February (27.6°C).
- Average low temperature in December: 22.1°C
The months with the highest average low temperature are July and August (25.3°C).
The coldest month (with the lowest average low temperature) is February (21.3°C).
Average pressure in December
Manzanillo, Mexico
- Average pressure in December: 1013.5mbar
The month with the highest atmospheric pressure is January (1014.1mbar).
The month with the lowest atmospheric pressure is September (1011mbar).
Average wind speed in December
Manzanillo, Mexico
- Average wind speed in December: 8km/h
The windiest months (with the highest average wind speed) are August and September (10km/h).
The calmest month (with the lowest average wind speed) is December (8km/h).
Average humidity in December
Manzanillo, Mexico
- Average humidity in December: 69%
The month with the highest relative humidity is September (80%).
The month with the lowest relative humidity is April (64%).
Average rainfall in December
Manzanillo, Mexico
- Average rainfall in December: 13mm
The wettest month (with the highest rainfall) is September (180mm).
The driest month (with the least rainfall) is April (0mm).
Average rainfall days in December
Manzanillo, Mexico
- Average rainfall days in December: 4.8 days
The month with the highest number of rainy days is August (26.3 days).
The month with the least rainy days is March (1.3 days).
Average sea temperature in December
Manzanillo, Mexico
- Average sea temperature in December: 27°C
The best month for swimming (with the highest average sea temperature) is August (29.9°C).
The coldest month (with the lowest average sea temperature) is March (25.2°C).
Average daylight in December /
Average sunshine in December
Manzanillo, 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 March and April (Average sunshine: 9h and 54min).
The months with the least sunshine are August and September (Average sunshine: 8h and 54min).
Average sunshine days in December
Manzanillo, Mexico
- Average sunshine days in December: 25.4 days
The month with the most sunshine days is April (29.6 days).
The month with the least sunshine days is August (2.3 days).
Average UV index in December
Manzanillo, 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
Manzanillo, Mexico
- Average cloud cover in December: 11
The month with the most cloud cover is September (Cloud cover 34).
The months with the least cloud cover are March and April (Cloud cover 8).
Average visibility in December
Manzanillo, 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).
