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
The transition from August to September sees an average high-temperature of a still tropical 30.5°C (86.9°F), indicating a minor variance from the prior month. Chelem in September observes a slight diminution in temperature from daily highs, recording a low-temperature average of 25.7°C (78.3°F).Heat index
For September, the heat index is computed to be a torrid 39°C (102.2°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'real feel' or 'apparent temperature', marries air temperature and humidity to produce a value illustrating perceived warmth. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values hold particular importance for children. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.
Humidity
With an average relative humidity of 78%, September is the most humid month in Chelem.Rainfall
In September, the rain falls for 19.8 days. Throughout September, 69mm (2.72") of precipitation is accumulated. Throughout the year, in Chelem, there are 165.2 rainfall days, and 489mm (19.25") of precipitation is accumulated.Daylight
In Chelem, the average length of the day in September is 12h and 16min.On the first day of September in Chelem, sunrise is at 5:42 am and sunset at 6:14 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 5:47 pm CST.
Sunshine
In Chelem, the average sunshine in September is 10.3h.UV index
March through October, with an average maximum UV index of 7, are months with the highest UV index in Chelem, Mexico. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 7 transforms into these recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Frequently asked questions
Is it hot in Chelem during September?
What is the most humid month in Chelem?
What is the average humidity in September in Chelem?
How much does it rain in Chelem in September?
What is the average length of the day in September in Chelem?
When is the sunrise / sunset in September in Chelem?
How many hours of sunshine does Chelem have in September?
What are the months with the highest UV index in Chelem?
What is the UV index reading in September in Chelem?
Average temperature in September
Chelem, Mexico
- Average high temperature in September: 30.5°C
The warmest month (with the highest average high temperature) is August (31.1°C).
The month with the lowest average high temperature is January (25.3°C).
- Average low temperature in September: 25.7°C
The month with the highest average low temperature is August (26°C).
The coldest month (with the lowest average low temperature) is January (21°C).
Average pressure in September
Chelem, Mexico
- Average pressure in September: 1011.9mbar
The month with the highest atmospheric pressure is January (1017.8mbar).
The month with the lowest atmospheric pressure is September (1011.9mbar).
Average wind speed in September
Chelem, Mexico
- Average wind speed in September: 17km/h
The windiest month (with the highest average wind speed) is March (23.1km/h).
The calmest month (with the lowest average wind speed) is September (17km/h).
Average humidity in September
Chelem, Mexico
- Average humidity in September: 78%
The month with the highest relative humidity is September (78%).
The month with the lowest relative humidity is March (72%).
Average rainfall in September
Chelem, Mexico
- Average rainfall in September: 69mm
The wettest month (with the highest rainfall) is June (81mm).
The driest months (with the least rainfall) are February and March (12mm).
Average rainfall days in September
Chelem, Mexico
- Average rainfall days in September: 19.8 days
The month with the highest number of rainy days is September (19.8 days).
The month with the least rainy days is March (7.5 days).
Average daylight in September /
Average sunshine in September
Chelem, Mexico
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in September: 10h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).
Average sunshine days in September
Chelem, Mexico
- Average sunshine days in September: 7.2 days
The month with the most sunshine days is March (21.4 days).
The month with the least sunshine days is September (7.2 days).
Average UV index in September
Chelem, Mexico
- Average UV index in September: 7
The months with the highest UV index are March, April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 6).
Average cloud cover in September
Chelem, Mexico
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 32).
The month with the least cloud cover is July (Cloud cover 18).
Average visibility in September
Chelem, Mexico
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Chelem, Mexico
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