September weather forecast
San Juan Tepezontes, El Salvador

Weather in September

The first month of the autumn, September, is also a hot month in San Juan Tepezontes, El Salvador, with an average temperature fluctuating between 30.9°C (87.6°F) and 20.5°C (68.9°F).

Temperature

In San Juan Tepezontes, El Salvador, the average high-temperature in September is essentially the same as in August - a still hot 30.9°C (87.6°F). In September, the average low-temperature is 20.5°C (68.9°F).

Heat index

In September, the average heat index is evaluated at an extremely hot 41°C (105.8°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 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, differences in body mass, height, and shape, clothing), and activity. 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.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. 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 September in San Juan Tepezontes, El Salvador, is 82%.

Rainfall

In San Juan Tepezontes, during 27.5 rainfall days, 134mm (5.28") of precipitation is typically accumulated. Throughout the year, there are 192.2 rainfall days, and 1062mm (41.81") of precipitation is accumulated.

Daylight

In September, the average length of the day in San Juan Tepezontes is 12h and 12min.
On the first day of the month, sunrise is at 05:44 and sunset at 18:07. On the last day of September, sunrise is at 05:45 and sunset at 17:46 CST.

Sunshine

In San Juan Tepezontes, the average sunshine in September is 8.8h.

UV index

The months with the lowest UV index in San Juan Tepezontes are January, June through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in San Juan Tepezontes?

The average high-temperature, in September, in San Juan Tepezontes, El Salvador, is 30.9°C (87.6°F), while the average low-temperature is 20.5°C (68.9°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is evaluated at 41°C (105.8°F).

What is the average humidity in September in San Juan Tepezontes?

In San Juan Tepezontes, El Salvador, the average relative humidity in September is 82%.

How many days does it rain in September in San Juan Tepezontes?

In San Juan Tepezontes, during September, the rain falls for 27.5 days and regularly aggregates up to 134mm (5.28") of precipitation.

How many hours of daylight does San Juan Tepezontes have in September?

In September, the average day length in San Juan Tepezontes is 12h and 12min.

When is the sunrise / sunset in September in San Juan Tepezontes?

On the first day of September, sunrise is at 05:44 and sunset at 18:07. On the last day of the month, sunrise is at 05:45 and sunset at 17:46 CST.

How long on average sun shines in September in San Juan Tepezontes?

In San Juan Tepezontes, El Salvador, the average sunshine duration in September is 8.8h.

What are the months with the lowest UV index in San Juan Tepezontes?

January, June through December, with an average maximum UV index of 6, are months with the lowest UV index in San Juan Tepezontes.

How high is the UV index in September in San Juan Tepezontes?

The average daily maximum UV index in September in San Juan Tepezontes, El Salvador, is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unsafe exposure to Sun's UV rays.

Average temperature in September
San Juan Tepezontes, El Salvador

Average temperature in September - San Juan Tepezontes, El Salvador
  • Average high temperature in September: 30.9°C

The warmest month (with the highest average high temperature) is March (34.1°C).
The month with the lowest average high temperature is October (29.6°C).

  • Average low temperature in September: 20.5°C

The month with the highest average low temperature is April (22.3°C).
The coldest month (with the lowest average low temperature) is December (18.6°C).

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Average pressure in September
San Juan Tepezontes, El Salvador

Average pressure in September - San Juan Tepezontes, El Salvador
  • Average pressure in September: 1011.5mbar

The month with the highest atmospheric pressure is January (1013.7mbar).
The months with the lowest atmospheric pressure are May and October (1011.4mbar).

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Average wind speed in September
San Juan Tepezontes, El Salvador

Average wind speed in September - San Juan Tepezontes, El Salvador
  • Average wind speed in September: 4.3km/h

The windiest month (with the highest average wind speed) is January (7.5km/h).
The calmest month (with the lowest average wind speed) is June (4.2km/h).

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Average humidity in September
San Juan Tepezontes, El Salvador

Average humidity in September - San Juan Tepezontes, El Salvador
  • Average humidity in September: 82%

The month with the highest relative humidity is October (83%).
The month with the lowest relative humidity is March (59%).

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Average rainfall in September
San Juan Tepezontes, El Salvador

Average rainfall in September - San Juan Tepezontes, El Salvador
  • Average rainfall in September: 134mm

The wettest month (with the highest rainfall) is May (242mm).
The driest month (with the least rainfall) is January (1mm).

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Average rainfall days in September
San Juan Tepezontes, El Salvador

Average rainfall days in September - San Juan Tepezontes, El Salvador
  • Average rainfall days in September: 27.5 days

The month with the highest number of rainy days is September (27.5 days).
The month with the least rainy days is January (1.5 days).

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Average daylight in September /
Average sunshine in September
San Juan Tepezontes, El Salvador

Average daylight in September / Average sunshine in September - San Juan Tepezontes, El Salvador
  • Average daylight in September: 12h and 12min

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 September: 8h and 48min

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 September
San Juan Tepezontes, El Salvador

Average sunshine days in September - San Juan Tepezontes, El Salvador
  • Average sunshine days in September: 1.3 days

The month with the most sunshine days is January (29 days).
The month with the least sunshine days is September (1.3 days).

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Average UV index in September
San Juan Tepezontes, El Salvador

Average UV index in September - San Juan Tepezontes, El Salvador
  • Average UV index in September: 6

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

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Average cloud cover in September
San Juan Tepezontes, El Salvador

Average cloud cover in September - San Juan Tepezontes, El Salvador
  • Average cloud cover in September: 44

The month with the most cloud cover is September (Cloud cover 44).
The months with the least cloud cover are January and December (Cloud cover 14).

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Average visibility in September
San Juan Tepezontes, El Salvador

Average visibility in September - San Juan Tepezontes, El Salvador
  • Average visibility in September: 7km

The months with the highest visibility are January, February, March, April and December (10km).
The month with the lowest visibility is September (7km).

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