January weather forecast
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

Weather in January

January is a tropical winter month in San Salvador, El Salvador, with an average temperature varying between 30.6°C (87.1°F) and 19.4°C (66.9°F).

Temperature

In San Salvador, El Salvador, the average high-temperature in January is almost 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 evaluated at a sweltering 35.2°C (95.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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', 'apparent temperature', 'felt air temperature', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, clothing). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in January in San Salvador is 65%.

Rainfall

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

Daylight

In San Salvador, El Salvador, the average length of the day in January is 11h and 26min.
On the first day of January in San Salvador, sunrise is at 06:20 and sunset at 17:40. On the last day of the month, sunrise is at 06:23 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 lowest UV index are January, May, June, August through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 6 in January transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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.
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FAQ

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. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 35.2°C (95.4°F).

What is the average humidity in January in San Salvador?

The average relative humidity in January in San Salvador is 65%.

What is the driest month in San Salvador?

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

How many days does it rain in January in San Salvador?

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

What is the average length of the day in January in San Salvador?

In January, the average day length is 11h and 26min.

When are sunrise and sunset in January in San Salvador?

On the first day of January in San Salvador, El Salvador, sunrise is at 06:20 and sunset at 17:40. On the last day of the month, sunrise is at 06:23 and sunset at 17:56 CST.

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

The months with the least sunshine in San Salvador, El Salvador, are January and December, with an average of 7.7h of sunshine.

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

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

What is the month with the lowest UV index in San Salvador?

The 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 January, the average daily maximum UV index in San Salvador is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.

Average temperature in January
San Salvador, El Salvador

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).

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Average pressure in January
San Salvador, El Salvador

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).
The months with the lowest atmospheric pressure are May and October (1011.3mbar).

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Average wind speed in January
San Salvador, El Salvador

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).

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Average humidity in January
San Salvador, El Salvador

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

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

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Average rainfall in January
San Salvador, El Salvador

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).

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Average rainfall days in January
San Salvador, El Salvador

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).

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Average daylight in January /
Average sunshine in January
San Salvador, El Salvador

Average daylight in January / Average sunshine in January - San Salvador, El Salvador
  • Average daylight in January: 11h and 26min

The month with the longest days is June (Average daylight: 12h and 55min).
The month with the shortest days is December (Average daylight: 11h and 20min).

  • Average sunshine in January: 7h and 42min

The month with the most sunshine is April (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).

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Average sunshine days in January
San Salvador, El Salvador

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).

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Average UV index in January
San Salvador, El Salvador

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

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

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Average cloud cover in January
San Salvador, El Salvador

Average cloud cover in January - San Salvador, El Salvador
  • Average cloud cover in January: 13

The months with the most cloud cover are June, September and October (Cloud cover 38).
The month with the least cloud cover is January (Cloud cover 13).

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Average visibility in January
San Salvador, El Salvador

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

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

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