Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September, known for its average high temperature of 28.5°C (83.3°F) and an average low temperature of 19.4°C (66.9°F), is the coldest month.Heat index
The heat index value during September is estimated at a tropical 33°C (91.4°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Take note of the fact that heat index values are based on shaded circumstances with light airflows. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Humidity
The months with the highest humidity are September and October, with an average relative humidity of 79%.Rainfall
In September, in San Juan La Laguna, the rain falls for 27.5 days. Throughout September, 209mm (8.23") of precipitation is accumulated. In San Juan La Laguna, during the entire year, the rain falls for 222.8 days and collects up to 1491mm (58.7") of precipitation.Daylight
In San Juan La Laguna, the average length of the day in September is 12h and 13min.On the first day of September in San Juan La Laguna, Guatemala, sunrise is at 05:53 and sunset at 18:16. On the last day of the month, sunrise is at 05:54 and sunset at 17:55 CST.
Sunshine
In September, the average sunshine is 10.4h.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 radiation for the average person.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Frequently asked questions
What part of the year is the coldest in San Juan La Laguna?
Is it hot in San Juan La Laguna during September?
What are the most humid months in San Juan La Laguna?
What is the average humidity in September in San Juan La Laguna?
How many days does it rain in September in San Juan La Laguna?
What is the average length of the day in September in San Juan La Laguna?
When are sunrise and sunset in September in San Juan La Laguna?
How long on average sun shines in September in San Juan La Laguna?
What is the month with the highest UV index in San Juan La Laguna?
What is the month with the lowest UV index in San Juan La Laguna?
What is the UV index intensity in September in San Juan La Laguna?
Average temperature in September
San Juan La Laguna, Guatemala
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is September (28.5°C).
- Average low temperature in September: 19.4°C
The month with the highest average low temperature is May (20.5°C).
The coldest month (with the lowest average low temperature) is December (17.6°C).
Average pressure in September
San Juan La Laguna, Guatemala
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is January (1014.5mbar).
The month with the lowest atmospheric pressure is October (1012.2mbar).
Average wind speed in September
San Juan La Laguna, Guatemala
- Average wind speed in September: 5.2km/h
The windiest month (with the highest average wind speed) is March (6.6km/h).
The calmest month (with the lowest average wind speed) is May (5.1km/h).
Average humidity in September
San Juan La Laguna, Guatemala
- Average humidity in September: 79%
The months with the highest relative humidity are September and October (79%).
The months with the lowest relative humidity are January, February and March (59%).
Average rainfall in September
San Juan La Laguna, Guatemala
- Average rainfall in September: 209mm
The wettest month (with the highest rainfall) is May (274mm).
The driest months (with the least rainfall) are January and February (7mm).
Average rainfall days in September
San Juan La Laguna, 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 January (4.8 days).
Average daylight in September /
Average sunshine in September
San Juan La Laguna, 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 2min
The months with the most sunshine are April and July (Average sunshine: 11h and 12min).
The month with the least sunshine is November (Average sunshine: 7h and 24min).
Average sunshine days in September
San Juan La Laguna, Guatemala
- Average sunshine days in September: 1.5 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is September (1.5 days).
Average UV index in September
San Juan La Laguna, 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
San Juan La Laguna, Guatemala
- Average cloud cover in September: 36
The month with the most cloud cover is June (Cloud cover 38).
The month with the least cloud cover is January (Cloud cover 12).
Average visibility in September
San Juan La Laguna, Guatemala
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
San Juan La Laguna, Guatemala
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