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
An average high-temperature of a still warm 29.3°C (84.7°F) marks December, exhibiting a close resemblance to the conditions in November. In Jalpatagua, the average low-temperature during the month of December is a comfortable 18.1°C (64.6°F).Heat index
In December, the heat index is appraised at a tropical 34°C (93.2°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
In December, the average relative humidity is 71%.Rainfall
In December, the rain falls for 3 days. Throughout December, 4mm (0.16") of precipitation is accumulated. In Jalpatagua, during the entire year, the rain falls for 169.5 days and collects up to 865mm (34.06") of precipitation.Daylight
The month with the shortest days in Jalpatagua is December, with an average of 11h and 18min of daylight.On the first day of December, sunrise is at 06:08 and sunset at 17:29. On the last day of the month, sunrise is at 06:24 and sunset at 17:42 CST.
Sunshine
January and December, with an average of 7.7h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January, February, May through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum UV index of 6 in December translates into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is December?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Jalpatagua have in December?
When is the lowest UV index?
What is the UV index reading in December in Jalpatagua?
Average temperature in December
Jalpatagua, Guatemala
- Average high temperature in December: 29.3°C
The warmest month (with the highest average high temperature) is April (32.6°C).
The month with the lowest average high temperature is October (28.1°C).
- Average low temperature in December: 18.1°C
The month with the highest average low temperature is May (21.7°C).
The coldest month (with the lowest average low temperature) is January (17.9°C).
Average pressure in December
Jalpatagua, Guatemala
- Average pressure in December: 1013.4mbar
The month with the highest atmospheric pressure is January (1014.1mbar).
The month with the lowest atmospheric pressure is May (1011.6mbar).
Average wind speed in December
Jalpatagua, Guatemala
- Average wind speed in December: 9.4km/h
The windiest month (with the highest average wind speed) is January (10.6km/h).
The calmest months (with the lowest average wind speed) are June and September (5.2km/h).
Average humidity in December
Jalpatagua, Guatemala
- Average humidity in December: 71%
The months with the highest relative humidity are September and October (84%).
The month with the lowest relative humidity is March (63%).
Average rainfall in December
Jalpatagua, Guatemala
- Average rainfall in December: 4mm
The wettest month (with the highest rainfall) is October (162mm).
The driest month (with the least rainfall) is January (1mm).
Average rainfall days in December
Jalpatagua, Guatemala
- Average rainfall days in December: 3 days
The month with the highest number of rainy days is May (24.2 days).
The month with the least rainy days is January (1.8 days).
Average daylight in December /
Average sunshine in December
Jalpatagua, Guatemala
- Average daylight in December: 11h and 2min
The month with the longest days is June (Average daylight: 12h and 54min).
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 April (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).
Average sunshine days in December
Jalpatagua, Guatemala
- Average sunshine days in December: 27.5 days
The month with the most sunshine days is January (28.4 days).
The month with the least sunshine days is June (5.9 days).
Average UV index in December
Jalpatagua, Guatemala
- Average UV index in December: 6
The months with the highest UV index are March and April (UV index 7).
The months with the lowest UV index are January, February, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in December
Jalpatagua, Guatemala
- Average cloud cover in December: 12
The months with the most cloud cover are June and September (Cloud cover 42).
The months with the least cloud cover are January and December (Cloud cover 12).
Average visibility in December
Jalpatagua, Guatemala
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are June, August, September and October (8km).
Jalpatagua, Guatemala
Weather forecast for your location
2. Allow the app to use your location