January weather forecast
Apopa, El Salvador

January sets the stage for the weather year in Apopa, El Salvador. Dry conditions dominate the month with a meager 2mm (0.08") of rainfall recorded. It establishes itself as the coldest month, yet temperatures remain pleasantly warm and mild. The gentle 8km/h (5mph) wind breezes and expansive daylight for about 11.4 hours contribute to the month being appreciated by locals and tourists alike. The start of the year in Apopa is strongly characterized by high visibility and relatively dry weather.

Temperature

As January unfolds in Apopa, the average high-temperature reaches a still tropical 31.2°C (88.2°F), hinting at a slight fluctuation from the previous month. Apopa records a pronounced decline from the day's peak to an average nighttime low-temperature of 19°C (66.2°F) throughout January.

Heat index

For January, the heat index is appraised at a fiery hot 36°C (96.8°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
The physiological way the human body responds to excessive heat is by inducing perspiration, using sweat evaporation as a cooling mechanism. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

The average relative humidity in January is 64%.

Rainfall

January is the month with the least rainfall in Apopa. Rain falls for 2.3 days and accumulates 2mm (0.08") of precipitation.

Daylight

The average length of the day in January in Apopa, El Salvador, is 11h and 25min.
On the first day of the month, sunrise is at 06:20 and sunset at 17:40. On the last day of January, in Apopa, El Salvador, sunrise is at 06:24 and sunset at 17:56 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 highest UV index in Apopa, El Salvador, are January through April, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 7 in January translates into this advice:
Ward off overexposure. Defence against solar harm is crucial. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.