September weather forecast
Coatepeque, Guatemala

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Weather in September

September, the first month of the autumn in Coatepeque, is also a hot month, with an average temperature fluctuating between 21.4°C (70.5°F) and 30.1°C (86.2°F).

Temperature

Transitioning into September, Coatepeque records an average high-temperature of a still hot 30.1°C (86.2°F), almost identical to August's 30.9°C (87.6°F). Throughout the month of September, Coatepeque observes an average nighttime temperature of 21.4°C (70.5°F).

Heat index

September's heat index is appraised at a very hot 37°C (98.6°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In September, the average relative humidity in Coatepeque is 77%.

Rainfall

In September, the rain falls for 27.5 days. Throughout September, 159mm (6.26") of precipitation is accumulated. Throughout the year, in Coatepeque, there are 222.6 rainfall days, and 1301mm (51.22") of precipitation is accumulated.

Daylight

In Coatepeque, Guatemala, the average length of the day in September is 12h and 13min.
On the first day of September, sunrise is at 05:55 and sunset at 18:19. On the last day of the month, sunrise is at 05:57 and sunset at 17:57 CST.

Sunshine

In September, the average sunshine in Coatepeque is 10.9h.

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 reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Inhibit overexposure. Warding off sun damage is of utmost importance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
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Frequently asked questions

Is it hot in Coatepeque during September?

In September, in Coatepeque, the average high-temperature is 30.1°C (86.2°F), and the average low-temperature is 21.4°C (70.5°F). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which factors the actual air temperature with the relative humidity, is appraised at 37°C (98.6°F).

What is the average humidity in September in Coatepeque?

In September, the average relative humidity in Coatepeque, Guatemala, is 77%.

How much does it rain in Coatepeque in September?

In Coatepeque, in September, during 27.5 rainfall days, 159mm (6.26") of precipitation is typically accumulated.

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

The average day length in September in Coatepeque is 12h and 13min.

What time are sunrise and sunset in September in Coatepeque?

On the first day of September in Coatepeque, sunrise is at 05:55 and sunset at 18:19. On the last day of the month, sunrise is at 05:57 and sunset at 17:57 CST.

How long on average sun shines in September in Coatepeque?

The average sunshine duration in September in Coatepeque, Guatemala, is 10.9h.

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

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

What is the UV index intensity in September in Coatepeque?

In September, the average daily maximum UV index in Coatepeque, Guatemala, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Coatepeque, Guatemala

Average temperature in September - Coatepeque, Guatemala
  • Average high temperature in September: 30.1°C

The warmest month (with the highest average high temperature) is April (32.5°C).
The month with the lowest average high temperature is October (29.8°C).

  • Average low temperature in September: 21.4°C

The month with the highest average low temperature is May (22.7°C).
The coldest month (with the lowest average low temperature) is December (19.5°C).

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Average pressure in September
Coatepeque, Guatemala

Average pressure in September - Coatepeque, Guatemala
  • Average pressure in September: 1012.3mbar

The month with the highest atmospheric pressure is January (1014.3mbar).
The month with the lowest atmospheric pressure is October (1012mbar).

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Average wind speed in September
Coatepeque, Guatemala

Average wind speed in September - Coatepeque, Guatemala
  • Average wind speed in September: 5.5km/h

The windiest month (with the highest average wind speed) is March (6.7km/h).
The calmest months (with the lowest average wind speed) are May, June, September and October (5.5km/h).

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Average humidity in September
Coatepeque, Guatemala

Average humidity in September - Coatepeque, Guatemala
  • Average humidity in September: 77%

The month with the highest relative humidity is October (78%).
The months with the lowest relative humidity are January, February and March (59%).

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Average rainfall in September
Coatepeque, Guatemala

Average rainfall in September - Coatepeque, Guatemala
  • Average rainfall in September: 159mm

The wettest month (with the highest rainfall) is May (261mm).
The driest months (with the least rainfall) are January and February (11mm).

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Average rainfall days in September
Coatepeque, Guatemala

Average rainfall days in September - Coatepeque, Guatemala
  • 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 February (5.3 days).

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Average daylight in September /
Average sunshine in September
Coatepeque, Guatemala

Average daylight in September / Average sunshine in September - Coatepeque, 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: 10h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 7h and 30min).

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Average sunshine days in September
Coatepeque, Guatemala

Average sunshine days in September - Coatepeque, Guatemala
  • Average sunshine days in September: 1.4 days

The month with the most sunshine days is January (21.5 days).
The month with the least sunshine days is September (1.4 days).

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Average UV index in September
Coatepeque, Guatemala

Average UV index in September - Coatepeque, Guatemala
  • 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).

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Average cloud cover in September
Coatepeque, Guatemala

Average cloud cover in September - Coatepeque, Guatemala
  • Average cloud cover in September: 33

The month with the most cloud cover is June (Cloud cover 34).
The month with the least cloud cover is January (Cloud cover 11).

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Average visibility in September
Coatepeque, Guatemala

Average visibility in September - Coatepeque, 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).

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Coatepeque, Guatemala

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