Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
January
Weather in January
Temperature
The shift into January uncovers an average high-temperature of a still tropical 34.6°C (94.3°F), subtly different from the previous month. Valle de San Juan observes a dramatic plunge from daytime highs in January, settling at an average low-temperature of 18.8°C (65.8°F).Heat index
For January, the heat index is calculated to be a blisteringly hot 41°C (105.8°F). Adopt heightened safety measures, heat cramps and heat exhaustion may occur. Sustained activity might cause heatstroke.Understanding the heat index involves considering values for shaded locales with light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', reflects the feeling of heat when considering both air temperature and humidity. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. Under conditions of high relative humidity, the rate of evaporation decreases. This results in the body retaining more heat than under conditions of dry air. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In January, the average relative humidity is 54%.Rainfall
January is the month with the least rainfall. Rain falls for 10.5 days and accumulates 37mm (1.46") of precipitation.Daylight
In Valle de San Juan, the average length of the day in January is 11h and 55min.On the first day of January, sunrise is at 06:07 and sunset at 18:00. On the last day of the month, sunrise is at 06:15 and sunset at 18:12 -05.
Sunshine
In January, the average sunshine is 9.6h.UV index
The months with the highest UV index are January through April, July through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily maximum UV index of 7 in January interprets into the following advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in January?
What is the average humidity in January?
What is the driest month?
How many days does it rain in January?
What is the average length of the day in January?
When are sunrise and sunset in January?
How many hours of sunshine does Valle de San Juan have in January?
What is the month with the highest UV index?
How high is the UV index in January?
Average temperature in January
Valle de San Juan, Colombia
- Average high temperature in January: 34.6°C
The warmest month (with the highest average high temperature) is February (35.5°C).
The month with the lowest average high temperature is June (32.5°C).
- Average low temperature in January: 18.8°C
The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is December (18°C).
Average pressure in January
Valle de San Juan, Colombia
- Average pressure in January: 1013.4mbar
The month with the highest atmospheric pressure is July (1015.2mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).
Average wind speed in January
Valle de San Juan, Colombia
- Average wind speed in January: 4.4km/h
The windiest months (with the highest average wind speed) are July and August (7.1km/h).
The calmest month (with the lowest average wind speed) is November (3.6km/h).
Average humidity in January
Valle de San Juan, Colombia
- Average humidity in January: 54%
The month with the highest relative humidity is November (65%).
The month with the lowest relative humidity is August (51%).
Average rainfall in January
Valle de San Juan, Colombia
- Average rainfall in January: 37mm
The wettest month (with the highest rainfall) is October (109mm).
The driest month (with the least rainfall) is January (37mm).
Average rainfall days in January
Valle de San Juan, Colombia
- Average rainfall days in January: 10.5 days
The month with the highest number of rainy days is May (23.4 days).
The month with the least rainy days is January (10.5 days).
Average daylight in January /
Average sunshine in January
Valle de San Juan, Colombia
- Average daylight in January: 11h and 5min
The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 54min).
- Average sunshine in January: 9h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 8h and 24min).
Average sunshine days in January
Valle de San Juan, Colombia
- Average sunshine days in January: 14.1 days
The month with the most sunshine days is January (14.1 days).
The month with the least sunshine days is May (2.4 days).
Average UV index in January
Valle de San Juan, Colombia
- Average UV index in January: 7
The months with the highest UV index are January, February, March, April, July, August, September and October (UV index 7).
The months with the lowest UV index are May, June, November and December (UV index 6).
Average cloud cover in January
Valle de San Juan, Colombia
- Average cloud cover in January: 22
The month with the most cloud cover is May (Cloud cover 33).
The month with the least cloud cover is January (Cloud cover 22).
Average visibility in January
Valle de San Juan, Colombia
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August and September (10km).
The months with the lowest visibility are October, November and December (9km).
