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
With the transition into December, San Felipe notes an average high-temperature of a still hot 30.5°C (86.9°F), closely resembling November. In December, San Felipe experiences an average nighttime temperature of 19.5°C (67.1°F).Heat index
In December, the average heat index is calculated to be a very hot 35°C (95°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Realize that the values for the heat index are set for shaded places and light 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', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are extremely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
In San Felipe, the average relative humidity in December is 64%.Rainfall
In San Felipe, in December, during 7.6 rainfall days, 21mm (0.83") of precipitation is typically accumulated. Throughout the year, there are 222.6 rainfall days, and 1301mm (51.22") of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 11h and 18min of daylight.On the first day of December, sunrise is at 06:15 and sunset at 17:35. On the last day of the month, sunrise is at 06:31 and sunset at 17:48 CST.
Sunshine
The average sunshine in December is 7.6h.UV index
The months with the lowest UV index are January, May, June, August through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: During December, 6 as the daily maximum UV index converts into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete 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
Is it hot during December?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does San Felipe have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
San Felipe, Guatemala
- Average high temperature in December: 30.5°C
The warmest month (with the highest average high temperature) is April (32.5°C).
The month with the lowest average high temperature is October (29.8°C).
- Average low temperature in December: 19.5°C
The month with the highest average low temperature is May (22.7°C).
The coldest month (with the lowest average low temperature) is December (19.5°C).
Average pressure in December
San Felipe, Guatemala
- Average pressure in December: 1013.7mbar
The month with the highest atmospheric pressure is January (1014.3mbar).
The month with the lowest atmospheric pressure is October (1012mbar).
Average wind speed in December
San Felipe, Guatemala
- Average wind speed in December: 6.1km/h
The windiest month (with the highest average wind speed) is March (6.7km/h).
The calmest months (with the lowest average wind speed) are May, June, September and October (5.5km/h).
Average humidity in December
San Felipe, Guatemala
- Average humidity in December: 64%
The month with the highest relative humidity is October (78%).
The months with the lowest relative humidity are January, February and March (59%).
Average rainfall in December
San Felipe, Guatemala
- Average rainfall in December: 21mm
The wettest month (with the highest rainfall) is May (261mm).
The driest months (with the least rainfall) are January and February (11mm).
Average rainfall days in December
San Felipe, Guatemala
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is September (27.5 days).
The month with the least rainy days is February (5.3 days).
Average daylight in December /
Average sunshine in December
San Felipe, Guatemala
- Average daylight in December: 11h and 2min
The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).
- Average sunshine in December: 7h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 7h and 30min).
Average sunshine days in December
San Felipe, Guatemala
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is September (1.4 days).
Average UV index in December
San Felipe, Guatemala
- Average UV index in December: 6
The months with the highest UV index are February, March, April and July (UV index 7).
The months with the lowest UV index are January, May, June, August, September, October, November and December (UV index 6).
Average cloud cover in December
San Felipe, Guatemala
- Average cloud cover in December: 12
The month with the most cloud cover is June (Cloud cover 34).
The month with the least cloud cover is January (Cloud cover 11).
Average visibility in December
San Felipe, Guatemala
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).
