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
December's advent presents an average high-temperature of a still moderately hot 27.6°C (81.7°F), indicating a slight variation from the conditions of the previous month. San Andrés encounters a steady low-temperature average of 17.7°C (63.9°F) throughout the month of December.Heat index
In December, the heat index is appraised at a tropical 32°C (89.6°F). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'real feel' or 'feels like', arises from combining readings of air temperature and relative moisture content. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
Humidity
The months with the highest humidity are October through December, with an average relative humidity of 85%.Rainfall
In San Andrés, during December, the rain falls for 13.2 days and regularly aggregates up to 30mm (1.18") of precipitation. In San Andrés, during the entire year, the rain falls for 227.8 days and collects up to 871mm (34.29") of precipitation.Daylight
The month with the shortest days is December, with an average of 11h and 6min of daylight.On the first day of the month, sunrise is at 06:13 and sunset at 17:24. On the last day of December, sunrise is at 06:28 and sunset at 17:37 CST.
Sunshine
In San Andrés, the average sunshine in December is 5.2h.UV index
In December, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 6 transforms into these recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the most humid month in San Andrés?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
How many hours of daylight does San Andrés have in December?
When are sunrise and sunset in December?
How many hours of sunshine does San Andrés have in December?
How high is the UV index in December in San Andrés?
Average temperature in December
San Andrés, Guatemala
- Average high temperature in December: 27.6°C
The warmest month (with the highest average high temperature) is April (35.5°C).
The month with the lowest average high temperature is January (27.4°C).
- Average low temperature in December: 17.7°C
The month with the highest average low temperature is May (22.5°C).
The coldest month (with the lowest average low temperature) is January (17.1°C).
Average pressure in December
San Andrés, Guatemala
- Average pressure in December: 1016.4mbar
The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is September (1011.8mbar).
Average wind speed in December
San Andrés, Guatemala
- Average wind speed in December: 4.2km/h
The windiest month (with the highest average wind speed) is April (5.7km/h).
The calmest months (with the lowest average wind speed) are October, November and December (4.2km/h).
Average humidity in December
San Andrés, Guatemala
- Average humidity in December: 85%
The months with the highest relative humidity are October, November and December (85%).
The month with the lowest relative humidity is April (67%).
Average rainfall in December
San Andrés, Guatemala
- Average rainfall in December: 30mm
The wettest month (with the highest rainfall) is June (161mm).
The driest month (with the least rainfall) is February (19mm).
Average rainfall days in December
San Andrés, Guatemala
- Average rainfall days in December: 13.2 days
The month with the highest number of rainy days is September (26.8 days).
The month with the least rainy days is February (11.4 days).
Average daylight in December /
Average sunshine in December
San Andrés, Guatemala
- 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 6min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is April (Average sunshine: 10h and 6min).
The months with the least sunshine are January and November (Average sunshine: 4h and 54min).
Average sunshine days in December
San Andrés, Guatemala
- Average sunshine days in December: 14.8 days
The month with the most sunshine days is March (16.8 days).
The month with the least sunshine days is September (1.7 days).
Average UV index in December
San Andrés, Guatemala
- Average UV index in December: 6
The months with the highest UV index are March, April, May, June and July (UV index 7).
The month with the lowest UV index is January (UV index 5).
Average cloud cover in December
San Andrés, Guatemala
- Average cloud cover in December: 62
The month with the most cloud cover is November (Cloud cover 65).
The month with the least cloud cover is April (Cloud cover 35).
Average visibility in December
San Andrés, Guatemala
- Average visibility in December: 6km
The months with the highest visibility are March, April and May (8km).
The months with the lowest visibility are January, September, October, November and December (6km).
