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 advent of January brings an average high-temperature of a still hot 31.2°C (88.2°F), almost identical to the preceding month. January nights in Santo Tomás are characterized by a notable drop from daytime highs, with an average low-temperature of 19°C (66.2°F).Heat index
The average heat index in January is estimated at a fiery hot 36°C (96.8°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Research indicates the heat index considers values in shaded locales and with light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', melds the effects of warmth and moisture to generate a feeling of heat. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
In Santo Tomás, the average relative humidity in January is 64%.Rainfall
The month with the least rainfall in Santo Tomás, El Salvador, is January, when the rain falls for 2.3 days and typically collects 2mm (0.08") of precipitation.Daylight
In January, the average length of the day is 11h and 26min.On the first day of the month, sunrise is at 06:19 and sunset at 17:40. On the last day of January, sunrise is at 06:23 and sunset at 17:56 CST.
Sunshine
The months with the least sunshine in Santo Tomás are January and December, with an average of 7.7h of sunshine.UV index
The months with the highest UV index are January through April, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 7 in January suggests the following recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Santo Tomás in January?
What is the average humidity in January in Santo Tomás?
What is the driest month in Santo Tomás?
How much does it rain in Santo Tomás in January?
How many hours of daylight does Santo Tomás have in January?
When are sunrise and sunset in January in Santo Tomás?
What is the month with the least sunshine in Santo Tomás?
How many hours of sunshine does Santo Tomás have in January?
What are the months with the highest UV index in Santo Tomás?
What is the UV index intensity in January in Santo Tomás?
Average temperature in January
Santo Tomás, El Salvador
- Average high temperature in January: 31.2°C
The warmest months (with the highest average high temperature) are March and April (33.4°C).
The month with the lowest average high temperature is October (29.7°C).
- Average low temperature in January: 19°C
The month with the highest average low temperature is May (22.6°C).
The coldest month (with the lowest average low temperature) is January (19°C).
Average pressure in January
Santo Tomás, El Salvador
- Average pressure in January: 1013.6mbar
The month with the highest atmospheric pressure is January (1013.6mbar).
The months with the lowest atmospheric pressure are May and October (1011.3mbar).
Average wind speed in January
Santo Tomás, El Salvador
- Average wind speed in January: 8km/h
The windiest month (with the highest average wind speed) is January (8km/h).
The calmest month (with the lowest average wind speed) is June (4.4km/h).
Average humidity in January
Santo Tomás, El Salvador
- Average humidity in January: 64%
The months with the highest relative humidity are September and October (82%).
The month with the lowest relative humidity is March (61%).
Average rainfall in January
Santo Tomás, El Salvador
- Average rainfall in January: 2mm
The wettest month (with the highest rainfall) is May (267mm).
The driest month (with the least rainfall) is January (2mm).
Average rainfall days in January
Santo Tomás, El Salvador
- Average rainfall days in January: 2.3 days
The month with the highest number of rainy days is May (26.9 days).
The month with the least rainy days is January (2.3 days).
Average daylight in January /
Average sunshine in January
Santo Tomás, El Salvador
- Average daylight in January: 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 January: 7h and 4min
The month with the most sunshine is April (Average sunshine: 11h and 18min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).
Average sunshine days in January
Santo Tomás, El Salvador
- Average sunshine days in January: 27.7 days
The month with the most sunshine days is January (27.7 days).
The month with the least sunshine days is September (2.5 days).
Average UV index in January
Santo Tomás, El Salvador
- Average UV index in January: 7
The months with the highest UV index are January, February, March and April (UV index 7).
The months with the lowest UV index are May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in January
Santo Tomás, El Salvador
- Average cloud cover in January: 13
The month with the most cloud cover is September (Cloud cover 41).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in January
Santo Tomás, El Salvador
- Average visibility in January: 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).
