January weather forecast and climate
San Salvador, El Salvador

The sunlit San Salvador city in El Salvador set on the beautiful slopes of the mountain
The sunlit San Salvador city in El Salvador set on the beautiful slopes of the mountain
January in San Salvador, El Salvador, is a hot winter month, with average temperature fluctuating between 19.4°C (66.9°F) and 30.6°C (87.1°F).

Temperature

In January, the average high-temperature is relatively the same as in December - a tropical 30.6°C (87.1°F). In San Salvador, the average low-temperature is 19.4°C (66.9°F).

Heat index

In January, the average heat index is appraised at a very hot 35.2°C (95.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. 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', 'feels like', 'apparent temperature', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, differences in body mass, height, and shape, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In January, the average relative humidity is 65%.

Rainfall

The month with the least rainfall in San Salvador, El Salvador, is January when the rain falls for 1.9 days and typically collects 1mm (0.04") of precipitation.

Daylight

The average length of the day in San Salvador is 11.4h.

Sunshine

January and December, with an average of 7.7h of sunshine, are months with the least sunshine.

UV index

January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 6 in January interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in January in San Salvador?

In San Salvador, in January, the average high-temperature is 30.6°C (87.1°F), and the average low-temperature is 19.4°C (66.9°F). In January, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), that combines air temperature and relative humidity, is evaluated at 35.2°C (95.4°F).

What is the average humidity in January in San Salvador?

In January, the average relative humidity in San Salvador is 65%.

How much does it rain in San Salvador in January?

In San Salvador, El Salvador, in January, it is raining for 1.9 days, with typically 1mm (0.04") of accumulated precipitation.

What is the driest month in San Salvador?

January is the month with the least rainfall in San Salvador. Rain falls for 1.9 days and accumulates 1mm (0.04") of precipitation.

How many hours of daylight does San Salvador have in January?

In San Salvador, El Salvador, the average length of the day in January is 11.4h.

What is the month with the least sunshine in San Salvador?

Months with the least sunshine are January and December, with an average of 7.7h of sunshine.

How long on average sun shines in January in San Salvador?

In San Salvador, El Salvador, the average sunshine in January is 7.7h.

What are the months with the lowest UV index in San Salvador?

Months with the lowest UV index are January, May, June, August through December, with an average maximum UV index of 6.

What is the UV index reading in January in San Salvador?

In San Salvador, the average daily maximum UV index in January is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in January - San Salvador, El Salvador
  • Average high temperature in January: 30.6°C

The warmest month (with the highest average high temperature) is March (32.6°C).
The month with the lowest average high temperature is October (29°C).

  • Average low temperature in January: 19.4°C

The month with the highest average low temperature is April (22.8°C).
The coldest month (with the lowest average low temperature) is January (19.4°C).

Average pressure in January - San Salvador, El Salvador
  • Average pressure in January: 1013.5mbar

The month with the highest atmospheric pressure is January (1013.5mbar).
Months with the lowest atmospheric pressure are May and October (1011.3mbar).

Average wind speed in January - San Salvador, El Salvador
  • Average wind speed in January: 8.5km/h

The windiest month (with the highest average wind speed) is January (8.5km/h).
The calmest month (with the lowest average wind speed) is June (4.8km/h).

Average humidity in January - San Salvador, El Salvador
  • Average humidity in January: 65%

Months with the highest relative humidity are September and October (82%).
The month with the lowest relative humidity is March (62%).

Average rainfall in January - San Salvador, El Salvador
  • Average rainfall in January: 1mm

The wettest month (with the highest rainfall) is May (234mm).
The driest month (with the least rainfall) is January (1mm).

Average rainfall days in January - San Salvador, El Salvador
  • Average rainfall days in January: 1.9 days

The month with the highest number of rainy days is September (26.3 days).
The month with the least rainy days is January (1.9 days).

Average daylight in January / Average sunshine in January - San Salvador, El Salvador
  • Average daylight in January: 11.4h

The month with the longest days is June (Average daylight: 12.9h).
The month with the shortest days is December (Average daylight: 11.3h).

  • Average sunshine in January: 7.7h

The month with the most sunshine is April (Average sunshine: 11.4h).
Months with the least sunshine are January and December (Average sunshine: 7.7).

Average sunshine days in January - San Salvador, El Salvador
  • Average sunshine days in January: 28.7 days

The month with the most sunshine days is January (28.7 days).
The month with the least sunshine days is September (3.2 days).

Average UV index in January - San Salvador, El Salvador
  • Average UV index in January: 6

Months with the highest UV index are February, March, April and July (UV index 7).
Months with the lowest UV index are January, May, June, August, September, October, November and December (UV index 6).

Average visibility in January - San Salvador, El Salvador
  • Average visibility in January: 10km

Months with the highest visibility are January, February, March, April, November and December (10km).
Months with the lowest visibility are September and October (8km).