September weather forecast
Sacacoyo, El Salvador

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Weather in September

The first month of the autumn, September, is still a warm month in Sacacoyo, El Salvador, with an average temperature fluctuating between 21.5°C (70.7°F) and 29.8°C (85.6°F).

Temperature

Sacacoyo signifies an average high-temperature of a warm 29.8°C (85.6°F) in September, closely mirroring the 30.8°C (87.4°F) of August. The low-temperature averages to a pleasant 21.5°C (70.7°F) during the nights of September.

Heat index

September's mean heat index is calculated to be a sweltering 38°C (100.4°F). Take more caution, heat exhaustion and heat cramps may occur. Long-lasting activity may cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

September and October, with an average relative humidity of 82%, are the most humid months in Sacacoyo.

Rainfall

In Sacacoyo, during September, the rain falls for 26.3 days and regularly aggregates up to 142mm (5.59") of precipitation. Throughout the year, in Sacacoyo, there are 187 rainfall days, and 1106mm (43.54") of precipitation is accumulated.

Daylight

The average length of the day in September in Sacacoyo is 12h and 12min.
On the first day of the month, sunrise is at 05:46 and sunset at 18:08. On the last day of September, sunrise is at 05:47 and sunset at 17:47 CST.

Sunshine

The average sunshine in September in Sacacoyo is 9.3h.

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 of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Updated: Jan 29, 2024 | Published by: Weather Atlas | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How hot is September in Sacacoyo?

An average high-temperature, in September, in Sacacoyo, is 29.8°C (85.6°F) and the average low-temperature is 21.5°C (70.7°F). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is calculated to be 38°C (100.4°F).

What is the most humid month in Sacacoyo?

The months with the highest humidity in Sacacoyo are September and October, with an average relative humidity of 82%.

What is the average humidity in September in Sacacoyo?

The average relative humidity in September in Sacacoyo is 82%.

How much does it rain in Sacacoyo in September?

In September, the rain falls for 26.3 days. Throughout September, 142mm (5.59") of precipitation is accumulated.

What is the average length of the day in September in Sacacoyo?

In Sacacoyo, El Salvador, the average day length in September is 12h and 12min.

What time are sunrise and sunset in September in Sacacoyo?

In September, on the first day of the month, sunrise is at 05:46 and sunset at 18:08. On the last day of the month, in Sacacoyo, El Salvador, sunrise is at 05:47 and sunset at 17:47 CST.

How many hours of sunshine does Sacacoyo have in September?

In Sacacoyo, El Salvador, the average sunshine duration in September is 9.3h.

What are the months with the lowest UV index in Sacacoyo?

The months with the lowest UV index in Sacacoyo are January, May, June, August through December, with an average maximum UV index of 6.

What is the UV index intensity in September in Sacacoyo?

In Sacacoyo, El Salvador, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sacacoyo, El Salvador

Average temperature in September - Sacacoyo, El Salvador
  • Average high temperature in September: 29.8°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 September: 21.5°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 September
Sacacoyo, El Salvador

Average pressure in September - Sacacoyo, El Salvador
  • Average pressure in September: 1011.4mbar

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

Average wind speed in September
Sacacoyo, El Salvador

Average wind speed in September - Sacacoyo, El Salvador
  • Average wind speed in September: 4.9km/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 September
Sacacoyo, El Salvador

Average humidity in September - Sacacoyo, El Salvador
  • Average humidity in September: 82%

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

Average rainfall in September
Sacacoyo, El Salvador

Average rainfall in September - Sacacoyo, El Salvador
  • Average rainfall in September: 142mm

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

Average rainfall days in September
Sacacoyo, El Salvador

Average rainfall days in September - Sacacoyo, El Salvador
  • Average rainfall days in September: 26.3 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 September /
Average sunshine in September
Sacacoyo, El Salvador

Average daylight in September / Average sunshine in September - Sacacoyo, El Salvador
  • Average daylight in September: 12h and 1min

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 September: 9h and 2min

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).

Average sunshine days in September
Sacacoyo, El Salvador

Average sunshine days in September - Sacacoyo, El Salvador
  • Average sunshine days in September: 3.2 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 September
Sacacoyo, El Salvador

Average UV index in September - Sacacoyo, El Salvador
  • Average UV index in September: 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).

Average cloud cover in September
Sacacoyo, El Salvador

Average cloud cover in September - Sacacoyo, El Salvador
  • Average cloud cover in September: 38

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).

Average visibility in September
Sacacoyo, El Salvador

Average visibility in September - Sacacoyo, El Salvador
  • Average visibility in September: 8km

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).

Sacacoyo, El Salvador

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