December weather forecastSan Jerónimo, Guatemala
December
Weather in December
The first month of the winter, December, is also an agreeable month in San Jerónimo, Guatemala, with temperature in the range of an average high of 21.5°C (70.7°F) and an average low of 13.3°C (55.9°F).Temperature
The transition into December shows a subtle variation to a still pleasant 21.5°C (70.7°F) from November's 21.8°C (71.2°F) in the average high-temperature. In San Jerónimo, an average nighttime temperature of 13.3°C (55.9°F) is expected during December.Humidity
In December, the average relative humidity is 89%.Rainfall
In San Jerónimo, during December, the rain falls for 21.3 days and regularly aggregates up to 78mm (3.07") of precipitation. Throughout the year, in San Jerónimo, there are 297.8 rainfall days, and 2530mm (99.61") 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 in San Jerónimo, sunrise is at 06:11 and sunset at 17:29. On the last day of the month, sunrise is at 06:26 and sunset at 17:41 CST.
Sunshine
In San Jerónimo, the average sunshine in December is 5.1h.UV index
January, November and December, with an average maximum UV index of 4, are months with the lowest UV index in San Jerónimo. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 4 in December interprets into the following recommendations:
Prioritize safety - Recommendations to avert sunburn are shared. Avoiding the Sun during its peak radiation time around midday is a healthy practice. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
San Jerónimo, Guatemala
- Average high temperature in December: 21.5°C
The warmest month (with the highest average high temperature) is April (27.8°C).
The month with the lowest average high temperature is January (21.2°C).
- Average low temperature in December: 13.3°C
The month with the highest average low temperature is June (17.6°C).
The coldest month (with the lowest average low temperature) is January (12.5°C).
Average pressure in December
San Jerónimo, Guatemala
- Average pressure in December: 1016.5mbar
The month with the highest atmospheric pressure is January (1017.3mbar).
The months with the lowest atmospheric pressure are May and September (1013mbar).
Average wind speed in December
San Jerónimo, Guatemala
- Average wind speed in December: 4.9km/h
The windiest months (with the highest average wind speed) are March and April (5.5km/h).
The calmest month (with the lowest average wind speed) is September (4.1km/h).
Average humidity in December
San Jerónimo, Guatemala
- Average humidity in December: 89%
The month with the highest relative humidity is November (91%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
San Jerónimo, Guatemala
- Average rainfall in December: 78mm
The wettest month (with the highest rainfall) is June (377mm).
The driest month (with the least rainfall) is February (71mm).
Average rainfall days in December
San Jerónimo, Guatemala
- Average rainfall days in December: 21.3 days
The month with the highest number of rainy days is September (29.4 days).
The month with the least rainy days is March (19.4 days).
Average daylight in December /
Average sunshine in December
San Jerónimo, Guatemala
- Average daylight in December: 11h and 18min
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: 5h and 6min
The month with the most sunshine is April (Average sunshine: 10h and 12min).
The months with the least sunshine are January and November (Average sunshine: 4h and 42min).
Average sunshine days in December
San Jerónimo, Guatemala
- Average sunshine days in December: 5.9 days
The month with the most sunshine days is March (8.8 days).
The month with the least sunshine days is September (0.6 days).
Average UV index in December
San Jerónimo, Guatemala
- Average UV index in December: 4
The months with the highest UV index are March and April (UV index 6).
The months with the lowest UV index are January, November and December (UV index 4).
Average cloud cover in December
San Jerónimo, Guatemala
- Average cloud cover in December: 67
The month with the most cloud cover is November (Cloud cover 72).
The month with the least cloud cover is April (Cloud cover 37).
Average visibility in December
San Jerónimo, Guatemala
- Average visibility in December: 6km
The month with the highest visibility is April (8km).
The months with the lowest visibility are January and November (5km).
