September weather forecast
Chamac, Guatemala

September

Weather in September

September, the first month of the autumn in Chamac, is still a pleasant month, with an average temperature ranging between min 13.5°C (56.3°F) and max 20.8°C (69.4°F).

Temperature

Chamac, Guatemala, starts September with an average high-temperature of a still agreeable 20.8°C (69.4°F), hinting at a minimal fluctuation from August. Chamac experiences a steady low-temperature of 13.5°C (56.3°F) throughout September.

Humidity

With an average relative humidity of 87%, September is the most humid month in Chamac.

Rainfall

In Chamac, in September, during 28.9 rainfall days, 307mm (12.09") of precipitation is typically accumulated. In Chamac, during the entire year, the rain falls for 263.7 days and collects up to 2085mm (82.09") of precipitation.

Daylight

In Chamac, the average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 05:54 and sunset at 18:18. On the last day of September, in Chamac, sunrise is at 05:56 and sunset at 17:56 CST.

Sunshine

In September, the average sunshine in Chamac is 8.5h.

UV index

The months with the highest UV index are January through October and December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Be vigilant - Suggestions to stave off sun damage are provided. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.

Frequently asked questions

What are September temperatures in Chamac?
The average high-temperature and low-temperature during September are 20.8°C (69.4°F) and 13.5°C (56.3°F) respectively.
What is the most humid month in Chamac?
September is the most humid month in Chamac, with an average relative humidity of 87%.
What is the average humidity in September in Chamac?
In Chamac, the average relative humidity in September is 87%.
How many days does it rain in September in Chamac?
In September, in Chamac, Guatemala, the rain falls for 28.9 days. Throughout September, 307mm (12.09") of precipitation is accumulated.
What is the average length of the day in September in Chamac?
In September, the average day length in Chamac, Guatemala, is 12h and 13min.
What time are sunrise and sunset in September in Chamac?
On the first day of September in Chamac, Guatemala, sunrise is at 05:54 and sunset at 18:18. On the last day of the month, sunrise is at 05:56 and sunset at 17:56 CST.
How many hours of sunshine does Chamac have in September?
In September, the average sunshine duration in Chamac is 8.5h.
What is the month with the highest UV index in Chamac?
The months with the highest UV index in Chamac, Guatemala, are January through October and December, with an average maximum UV index of 5.
How high is the UV index in September in Chamac?
The average daily maximum UV index in September in Chamac is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Chamac, Guatemala
  • Average high temperature in September: 20.8°C

The warmest month (with the highest average high temperature) is April (23.8°C).
The month with the lowest average high temperature is October (20.7°C).

  • Average low temperature in September: 13.5°C

The month with the highest average low temperature is May (14.3°C).
The coldest month (with the lowest average low temperature) is January (10.2°C).

Average pressure in September
Chamac, Guatemala
  • Average pressure in September: 1012.7mbar

The month with the highest atmospheric pressure is January (1015.3mbar).
The month with the lowest atmospheric pressure is May (1012.6mbar).

Average wind speed in September
Chamac, Guatemala
  • Average wind speed in September: 4.4km/h

The windiest month (with the highest average wind speed) is January (6.1km/h).
The calmest month (with the lowest average wind speed) is May (4.1km/h).

Average humidity in September
Chamac, Guatemala
  • Average humidity in September: 87%

The month with the highest relative humidity is September (87%).
The month with the lowest relative humidity is March (69%).

Average rainfall in September
Chamac, Guatemala
  • Average rainfall in September: 307mm

The wettest month (with the highest rainfall) is May (372mm).
The driest month (with the least rainfall) is January (14mm).

Average rainfall days in September
Chamac, Guatemala
  • Average rainfall days in September: 28.9 days

The months with the highest number of rainy days are June and October (29.2 days).
The month with the least rainy days is February (10.8 days).

Average daylight in September /
Average sunshine in September
Chamac, 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: 8h and 3min

The month with the most sunshine is April (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 7h and 12min).

Average sunshine days in September
Chamac, Guatemala
  • Average sunshine days in September: 0.6 days

The month with the most sunshine days is December (13.5 days).
The month with the least sunshine days is October (0.5 days).

Average UV index in September
Chamac, Guatemala
  • Average UV index in September: 5

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October and December (UV index 5).
The month with the lowest UV index is November (UV index 4).

Average cloud cover in September
Chamac, Guatemala
  • Average cloud cover in September: 51

The months with the most cloud cover are June and September (Cloud cover 51).
The months with the least cloud cover are January and February (Cloud cover 19).

Average visibility in September
Chamac, Guatemala
  • Average visibility in September: 8km

The months with the highest visibility are January, February and March (10km).
The months with the lowest visibility are May, June, August, September and October (8km).

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