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
September
Weather in September
Temperature
San Cristobal transitions into September recording an average high-temperature of a still warm 28.8°C (83.8°F), closely aligning with the preceding month's temperature. An average low-temperature of 20°C (68°F) is recorded during the nights in September.Heat index
During September, the heat index is calculated to be a very hot 35°C (95°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.Bear in mind that the heat index values are determined for shaded areas and light breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Temperature imbalances caused by excessive heat retention can trigger heat-related maladies.
Humidity
September and October, with an average relative humidity of 84%, are the most humid months.Rainfall
In San Cristobal, during September, the rain falls for 22.6 days and regularly aggregates up to 116mm (4.57") of precipitation. Throughout the year, there are 169.5 rainfall days, and 865mm (34.06") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 13min.On the first day of September in San Cristobal, Guatemala, sunrise is at 05:46 and sunset at 18:10. On the last day of the month, sunrise is at 05:48 and sunset at 17:48 CST.
Sunshine
In San Cristobal, the average sunshine in September is 9.4h.UV index
The months with the lowest UV index in San Cristobal are January, February, May through December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In September, the maximum UV index of 6 translates into these guidelines:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is September in San Cristobal?
What is the most humid month in San Cristobal?
What is the average humidity in September in San Cristobal?
How many days does it rain in September in San Cristobal?
What is the average length of the day in September in San Cristobal?
When is the sunrise / sunset in September in San Cristobal?
How many hours of sunshine does San Cristobal have in September?
What is the month with the lowest UV index in San Cristobal?
How high is the UV index in September in San Cristobal?
Average temperature in September
San Cristobal, Guatemala
- Average high temperature in September: 28.8°C
The warmest month (with the highest average high temperature) is April (32.6°C).
The month with the lowest average high temperature is October (28.1°C).
- Average low temperature in September: 20°C
The month with the highest average low temperature is May (21.7°C).
The coldest month (with the lowest average low temperature) is January (17.9°C).
Average pressure in September
San Cristobal, Guatemala
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is January (1014.1mbar).
The month with the lowest atmospheric pressure is May (1011.6mbar).
Average wind speed in September
San Cristobal, Guatemala
- Average wind speed in September: 5.2km/h
The windiest month (with the highest average wind speed) is January (10.6km/h).
The calmest months (with the lowest average wind speed) are June and September (5.2km/h).
Average humidity in September
San Cristobal, Guatemala
- Average humidity in September: 84%
The months with the highest relative humidity are September and October (84%).
The month with the lowest relative humidity is March (63%).
Average rainfall in September
San Cristobal, Guatemala
- Average rainfall in September: 116mm
The wettest month (with the highest rainfall) is October (162mm).
The driest month (with the least rainfall) is January (1mm).
Average rainfall days in September
San Cristobal, Guatemala
- Average rainfall days in September: 22.6 days
The month with the highest number of rainy days is May (24.2 days).
The month with the least rainy days is January (1.8 days).
Average daylight in September /
Average sunshine in September
San Cristobal, 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 2min
The month with the most sunshine is April (Average sunshine: 11h and 30min).
The months with the least sunshine are January and December (Average sunshine: 7h and 42min).
Average sunshine days in September
San Cristobal, Guatemala
- Average sunshine days in September: 6.3 days
The month with the most sunshine days is January (28.4 days).
The month with the least sunshine days is June (5.9 days).
Average UV index in September
San Cristobal, Guatemala
- Average UV index in September: 6
The months with the highest UV index are March and April (UV index 7).
The months with the lowest UV index are January, February, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
San Cristobal, Guatemala
- Average cloud cover in September: 42
The months with the most cloud cover are June and September (Cloud cover 42).
The months with the least cloud cover are January and December (Cloud cover 12).
Average visibility in September
San Cristobal, Guatemala
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are June, August, September and October (8km).
