September weather forecast
Santa Lucía Cotzumalguapa, Guatemala

September

Weather in September

September signifies the peak monsoon era as the rainfall accumulation reaches 230mm (9.06"). Though the mercury continues its constant traverse in the 20s°C, the sunlight is a rare commodity. Santa Lucía Cotzumalguapa is deeply veiled in clouds, and the city takes on a mystical allure. Come September, and the city revels in the peak rains, embracing its tropical core.

Temperature

With the arrival of September, Santa Lucía Cotzumalguapa's average high-temperature registers at a still warm 27.3°C (81.1°F), indicating a subtle variation from the previous month. In September, the nighttime temperature in Santa Lucía Cotzumalguapa, Guatemala, lowers to an average of 19°C (66.2°F).

Heat index

For most parts of September, the heat index is estimated at a tropical 31°C (87.8°F). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
When referencing the heat index, its values are suitable for shady environments and light breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

With an average relative humidity of 84%, September is the most humid month.

Rainfall

In Santa Lucía Cotzumalguapa, during September, the rain falls for 29.4 days and regularly aggregates up to 230mm (9.06") of precipitation. Throughout the year, there are 228.7 rainfall days, and 1368mm (53.86") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:15. On the last day of September, in Santa Lucía Cotzumalguapa, sunrise is at 05:53 and sunset at 17:54 CST.

Sunshine

In September, the average sunshine is 9.7h.

UV index

January through December, with an average maximum UV index of 6, are months with the highest UV index. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

What is the temperature in September?
The high-temperature, in September, in Santa Lucía Cotzumalguapa, records 27.3°C (81.1°F), while the low-temperature is 19°C (66.2°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is estimated at 31°C (87.8°F).
What is the most humid month?
The most humid month is September, with an average relative humidity of 84%.
What is the average humidity in September?
In Santa Lucía Cotzumalguapa, Guatemala, the average relative humidity in September is 84%.
How much does it rain in September?
In Santa Lucía Cotzumalguapa, Guatemala, during September, the rain falls for 29.4 days and regularly aggregates up to 230mm (9.06") of precipitation.
How many hours of daylight does Santa Lucía Cotzumalguapa have in September?
In Santa Lucía Cotzumalguapa, the average day length in September is 12h and 13min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 05:52 and sunset at 18:15. On the last day of the month, sunrise is at 05:53 and sunset at 17:54 CST.
How many hours of sunshine does Santa Lucía Cotzumalguapa have in September?
In September, the average sunshine duration is 9.7h.
What are the months with the highest UV index?
January through December, with an average maximum UV index of 6, are months with the highest UV index.
What is the month with the lowest UV index?
The months with the lowest UV index are January through December, with an average maximum UV index of 6.
How high is the UV index in September?
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's 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
Santa Lucía Cotzumalguapa, Guatemala
  • Average high temperature in September: 27.3°C

The warmest month (with the highest average high temperature) is March (30.6°C).
The month with the lowest average high temperature is October (27.1°C).

  • Average low temperature in September: 19°C

The month with the highest average low temperature is May (20.7°C).
The coldest month (with the lowest average low temperature) is January (17.2°C).

Average pressure in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average pressure in September: 1012.3mbar

The month with the highest atmospheric pressure is January (1014.6mbar).
The months with the lowest atmospheric pressure are May and October (1012.2mbar).

Average wind speed in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average wind speed in September: 5.6km/h

The windiest month (with the highest average wind speed) is January (9.3km/h).
The calmest month (with the lowest average wind speed) is September (5.6km/h).

Average humidity in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average humidity in September: 84%

The month with the highest relative humidity is September (84%).
The month with the lowest relative humidity is March (61%).

Average rainfall in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average rainfall in September: 230mm

The wettest month (with the highest rainfall) is June (240mm).
The driest month (with the least rainfall) is January (4mm).

Average rainfall days in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average rainfall days in September: 29.4 days

The month with the highest number of rainy days is September (29.4 days).
The month with the least rainy days is January (4.3 days).

Average daylight in September /
Average sunshine in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 13h and 0min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is April (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 7h and 36min).

Average sunshine days in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average sunshine days in September: 0.3 days

The month with the most sunshine days is January (23.9 days).
The month with the least sunshine days is September (0.3 days).

Average UV index in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average UV index in September: 6

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

Average cloud cover in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average cloud cover in September: 42

The month with the most cloud cover is September (Cloud cover 42).
The months with the least cloud cover are January and December (Cloud cover 11).

Average visibility in September
Santa Lucía Cotzumalguapa, Guatemala
  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, April, November and December (10km).
The months with the lowest visibility are May, June, July, August, September and October (9km).

englishespañol中文
Share