September weather forecast
Joateca, El Salvador

September

Weather in September

The first month of the autumn, September, is still a warm month in Joateca, El Salvador, with temperature in the range of an average low of 16.9°C (62.4°F) and an average high of 25.6°C (78.1°F).

Temperature

As August turns into September, the average high-temperatures rest at a still warm 25.6°C (78.1°F), showing a minor variation from the prior month. September nights in Joateca are marked by an average temperature drop to a comfortable 16.9°C (62.4°F).

Humidity

In Joateca, the average relative humidity in September is 87%.

Rainfall

In Joateca, El Salvador, in September, during 29.5 rainfall days, 231mm (9.09") of precipitation is typically accumulated. Throughout the year, there are 248 rainfall days, and 1545mm (60.83") of precipitation is accumulated.

Daylight

The average length of the day in September in Joateca is 12h and 12min.
On the first day of September in Joateca, El Salvador, sunrise is at 05:40 and sunset at 18:03. On the last day of the month, sunrise is at 05:41 and sunset at 17:42 CST.

Sunshine

In Joateca, the average sunshine in September is 7.7h.

UV index

January, February, May through December, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for average individuals.
Note: The UV index of 5 during September leads to these advisories:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

What is the usual temperature for Joateca in September?
During September, Joateca experiences an average high-temperature of 25.6°C (78.1°F) and a low-temperature of 16.9°C (62.4°F). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is computed to be 30°C (86°F).
What is the average humidity in September in Joateca?
In September, the average relative humidity in Joateca, El Salvador, is 87%.
How much does it rain in Joateca in September?
In Joateca, in September, during 29.5 rainfall days, 231mm (9.09") of precipitation is typically accumulated.
What is the average length of the day in September in Joateca?
The average day length in September in Joateca is 12h and 12min.
When are sunrise and sunset in September in Joateca?
In September, on the first day of the month, sunrise is at 05:40 and sunset at 18:03. On the last day of the month, in Joateca, El Salvador, sunrise is at 05:41 and sunset at 17:42 CST.
How long on average sun shines in September in Joateca?
The average sunshine duration in September is 7.7h.
What is the month with the lowest UV index in Joateca?
The months with the lowest UV index in Joateca, El Salvador, are January, February, May through December, with an average maximum UV index of 5.
What is the UV index reading in September in Joateca?
The average daily maximum UV index in September in Joateca, El Salvador, is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to Sun's UV rays.
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 - Joateca, El Salvador
Average temperature in September
Joateca, El Salvador
  • Average high temperature in September: 25.6°C

The warmest month (with the highest average high temperature) is April (29°C).
The month with the lowest average high temperature is December (22.9°C).

  • Average low temperature in September: 16.9°C

The month with the highest average low temperature is May (17.8°C).
The coldest month (with the lowest average low temperature) is January (13.3°C).

Average pressure in September - Joateca, El Salvador
Average pressure in September
Joateca, El Salvador
  • Average pressure in September: 1012mbar

The month with the highest atmospheric pressure is January (1015.2mbar).
The months with the lowest atmospheric pressure are May and September (1012mbar).

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

The windiest month (with the highest average wind speed) is January (11km/h).
The calmest month (with the lowest average wind speed) is September (4.9km/h).

Average humidity in September - Joateca, El Salvador
Average humidity in September
Joateca, El Salvador
  • Average humidity in September: 87%

The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is April (70%).

Average rainfall in September - Joateca, El Salvador
Average rainfall in September
Joateca, El Salvador
  • Average rainfall in September: 231mm

The wettest month (with the highest rainfall) is May (326mm).
The driest month (with the least rainfall) is January (9mm).

Average rainfall days in September - Joateca, El Salvador
Average rainfall days in September
Joateca, El Salvador
  • Average rainfall days in September: 29.5 days

The month with the highest number of rainy days is September (29.5 days).
The month with the least rainy days is February (8.8 days).

Average daylight in September / Average sunshine in September - Joateca, El Salvador
Average daylight in September /
Average sunshine in September
Joateca, 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: 7h and 4min

The month with the most sunshine is April (Average sunshine: 11h and 6min).
The month with the least sunshine is October (Average sunshine: 7h and 0min).

Average sunshine days in September - Joateca, El Salvador
Average sunshine days in September
Joateca, El Salvador
  • Average sunshine days in September: 0.5 days

The month with the most sunshine days is January (14.7 days).
The month with the least sunshine days is September (0.5 days).

Average UV index in September - Joateca, El Salvador
Average UV index in September
Joateca, El Salvador
  • Average UV index in September: 5

The months with the highest UV index are March and April (UV index 6).
The months with the lowest UV index are January, February, May, June, July, August, September, October, November and December (UV index 5).

Average cloud cover in September - Joateca, El Salvador
Average cloud cover in September
Joateca, El Salvador
  • Average cloud cover in September: 55

The month with the most cloud cover is October (Cloud cover 59).
The months with the least cloud cover are February and March (Cloud cover 29).

Average visibility in September - Joateca, El Salvador
Average visibility in September
Joateca, El Salvador
  • Average visibility in September: 7km

The month with the highest visibility is March (10km).
The months with the lowest visibility are July, August, September and October (7km).

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