September weather forecastSan Esteban, Guatemala
September
Weather in September
September, the first month of the autumn in San Esteban, is also a moderately hot month, with an average temperature varying between 18.8°C (65.8°F) and 29.5°C (85.1°F).Temperature
September's weather records an average high-temperature of a still warm 29.5°C (85.1°F), showing little deviation from August. During September, San Esteban's temperature averages to a refreshing 18.8°C (65.8°F) at night.Heat index
The heat index in September is calculated to be a torrid 37°C (98.6°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.Be informed that the heat index values are oriented around shady conditions and gentle breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.
Humidity
The average relative humidity in September in San Esteban is 83%.Rainfall
September is the month with the most rainfall in San Esteban. Rain falls for 23.8 days and accumulates 131mm (5.16") of precipitation.Daylight
In September, the average length of the day is 12h and 13min.On the first day of September, sunrise is at 05:45 and sunset at 18:09. On the last day of the month, sunrise is at 05:47 and sunset at 17:47 CST.
Sunshine
In San Esteban, the average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, an average UV index of 6 transforms into the following instructions:
Ward off overexposure. Defence against solar harm is crucial. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
San Esteban, Guatemala
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is April (32.3°C).
The month with the lowest average high temperature is January (25.1°C).
- Average low temperature in September: 18.8°C
The month with the highest average low temperature is May (20.2°C).
The coldest month (with the lowest average low temperature) is January (15.7°C).
Average pressure in September
San Esteban, Guatemala
- Average pressure in September: 1012.5mbar
The month with the highest atmospheric pressure is January (1016.3mbar).
The month with the lowest atmospheric pressure is September (1012.5mbar).
Average wind speed in September
San Esteban, Guatemala
- Average wind speed in September: 5km/h
The windiest month (with the highest average wind speed) is January (7.6km/h).
The calmest month (with the lowest average wind speed) is September (5km/h).
Average humidity in September
San Esteban, Guatemala
- Average humidity in September: 83%
The months with the highest relative humidity are October and November (84%).
The month with the lowest relative humidity is April (67%).
Average rainfall in September
San Esteban, Guatemala
- Average rainfall in September: 131mm
The wettest month (with the highest rainfall) is September (131mm).
The driest month (with the least rainfall) is March (8mm).
Average rainfall days in September
San Esteban, Guatemala
- Average rainfall days in September: 23.8 days
The months with the highest number of rainy days are June and September (23.8 days).
The month with the least rainy days is December (9.3 days).
Average daylight in September /
Average sunshine in September
San Esteban, Guatemala
- Average daylight in September: 12h and 12min
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 6min
The month with the most sunshine is April (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 6h and 0min).
Average sunshine days in September
San Esteban, Guatemala
- Average sunshine days in September: 3.9 days
The month with the most sunshine days is March (16.3 days).
The month with the least sunshine days is June (3 days).
Average UV index in September
San Esteban, Guatemala
- Average UV index in September: 6
The month with the highest UV index is March (UV index 7).
The months with the lowest UV index are January and November (UV index 5).
Average cloud cover in September
San Esteban, Guatemala
- Average cloud cover in September: 53
The month with the most cloud cover is November (Cloud cover 58).
The month with the least cloud cover is April (Cloud cover 30).
Average visibility in September
San Esteban, Guatemala
- Average visibility in September: 7km
The months with the highest visibility are April and May (9km).
The months with the lowest visibility are July, October, November and December (6km).
