September weather forecast
Mejicanos, El Salvador

September

Weather in September

September can be coined as the kin of August when considering Mejicanos' weather - as it exhibits similar meteorological conditions. The weather tapestry features a subtle drop in temperature, transitioning comfortably into fall. The gust of wind also undergoes a mild reduction, now standing at 7.9km/h (4.9mph), promoting a pleasant atmosphere. In contrast, visibility deteriorates slightly to 8km (5mi), as rainfall rises marginally to 142mm (5.59"). Despite the extensive rainfall, the atmospheric pressure manages a slight upward trend to 1011.4mb.

Temperature

September's advent denotes a minor fluctuation in the average high-temperature to a moderately hot 29.8°C (85.6°F) from August's 30.8°C (87.4°F). Mejicanos records an average low of 21.5°C (70.7°F) throughout the nights in September.

Heat index

The heat index value for September is evaluated at a sweltering 38°C (100.4°F). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is a metric representing the sensation of warmth when air temperature and moisture come together. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The natural method the human body uses to remove excess heat is by perspiring and letting sweat evaporate. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

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

Rainfall

In Mejicanos, El Salvador, during September, the rain falls for 26.3 days and regularly aggregates up to 142mm (5.59") of precipitation. In Mejicanos, El Salvador, during the entire year, the rain falls for 187 days and collects up to 1106mm (43.54") of precipitation.

Daylight

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

Sunshine

In Mejicanos, the average sunshine in September is 9.3h.

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 estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.

Frequently asked questions

How hot is it in September?
During September, Mejicanos experiences an average high-temperature of 29.8°C (85.6°F) and a low-temperature of 21.5°C (70.7°F). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is evaluated at 38°C (100.4°F).
What are the most humid months?
The months with the highest humidity are September and October, with an average relative humidity of 82%.
What is the average humidity in September?
The average relative humidity in September is 82%.
How many days does it rain in September?
In Mejicanos, in September, it is raining for 26.3 days, with typically 142mm (5.59") of accumulated precipitation.
How many hours of daylight does Mejicanos have in September?
The average day length in September is 12h and 12min.
When is the sunrise / sunset in September?
On the first day of September in Mejicanos, sunrise is at 05:45 and sunset at 18:07. On the last day of the month, sunrise is at 05:46 and sunset at 17:46 CST.
How long on average sun shines in September?
In September, the average sunshine duration is 9.3h.
When is the lowest UV index?
January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index.
How high is the UV index in September?
In September, the average daily maximum UV index is 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September - Mejicanos, El Salvador
Average temperature in September
Mejicanos, 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 - Mejicanos, El Salvador
Average pressure in September
Mejicanos, 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 - Mejicanos, El Salvador
Average wind speed in September
Mejicanos, 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 - Mejicanos, El Salvador
Average humidity in September
Mejicanos, 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 - Mejicanos, El Salvador
Average rainfall in September
Mejicanos, 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 - Mejicanos, El Salvador
Average rainfall days in September
Mejicanos, 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 - Mejicanos, El Salvador
Average daylight in September /
Average sunshine in September
Mejicanos, 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 - Mejicanos, El Salvador
Average sunshine days in September
Mejicanos, 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 - Mejicanos, El Salvador
Average UV index in September
Mejicanos, 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 - Mejicanos, El Salvador
Average cloud cover in September
Mejicanos, 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 - Mejicanos, El Salvador
Average visibility in September
Mejicanos, 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).

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