September weather forecastCelestún, Mexico
September
Weather in September
The first month of the autumn, September, is also a hot month in Celestún, Mexico, with an average temperature ranging between min 25.3°C (77.5°F) and max 30.7°C (87.3°F).Temperature
September commences with an average high-temperature of a still hot 30.7°C (87.3°F), showing little deviation from August's 31.4°C (88.5°F). During the month of September, the temperature falls to an average of 25.3°C (77.5°F).Heat index
September's average heat index is calculated to be a very hot 39°C (102.2°F). Exercise increased caution, heat cramps and heat exhaustion are potential hazards. Continuous activity could lead to heatstroke.Remember that heat index calculations are made for conditions in the shade with light wind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.
Humidity
September is the most humid month, with an average relative humidity of 78%.Rainfall
In Celestún, Mexico, during September, the rain falls for 22.7 days and regularly aggregates up to 91mm (3.58") of precipitation. In Celestún, during the entire year, the rain falls for 154.1 days and collects up to 532mm (20.94") of precipitation.Sea temperature
September is the month with the warmest seawater, with an average sea temperature of 29.3°C (84.7°F).Note: Water temperatures from 25°C (77°F) to 29°C (84.2°F) make swimming, diving, and similar activities highly pleasurable and enjoyable for long periods without discomfort.
Daylight
In September, the average length of the day is 12h and 15min.On the first day of the month, sunrise is at 5:45 am and sunset at 6:17 pm. On the last day of September, sunrise is at 5:52 am and sunset at 5:50 pm CST.
Sunshine
The average sunshine in September is 10.6h.UV index
The months with the highest UV index are March through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 7 transforms into these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take caution! The UV rays from the Sun gain strength from sand and water reflections.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Celestún, Mexico
- Average high temperature in September: 30.7°C
The warmest month (with the highest average high temperature) is August (31.4°C).
The month with the lowest average high temperature is January (25.8°C).
- Average low temperature in September: 25.3°C
The month with the highest average low temperature is June (25.7°C).
The coldest month (with the lowest average low temperature) is January (20.7°C).
Average pressure in September
Celestún, Mexico
- Average pressure in September: 1011.8mbar
The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is September (1011.8mbar).
Average wind speed in September
Celestún, Mexico
- Average wind speed in September: 15.9km/h
The windiest month (with the highest average wind speed) is March (20.9km/h).
The calmest month (with the lowest average wind speed) is September (15.9km/h).
Average humidity in September
Celestún, Mexico
- Average humidity in September: 78%
The month with the highest relative humidity is September (78%).
The months with the lowest relative humidity are March and April (71%).
Average rainfall in September
Celestún, Mexico
- Average rainfall in September: 91mm
The wettest month (with the highest rainfall) is June (103mm).
The driest month (with the least rainfall) is February (8mm).
Average rainfall days in September
Celestún, Mexico
- Average rainfall days in September: 22.7 days
The month with the highest number of rainy days is September (22.7 days).
The month with the least rainy days is February (4.8 days).
Average sea temperature in September
Celestún, Mexico
- Average sea temperature in September: 29.3°C
The best month for swimming (with the highest average sea temperature) is September (29.3°C).
The coldest month (with the lowest average sea temperature) is January (23.5°C).
Average daylight in September /
Average sunshine in September
Celestún, Mexico
- Average daylight in September: 12h and 18min
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 36min
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 30min).
Average sunshine days in September
Celestún, Mexico
- Average sunshine days in September: 4.7 days
The month with the most sunshine days is March (24.8 days).
The month with the least sunshine days is September (4.7 days).
Average UV index in September
Celestún, 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
Celestún, Mexico
- Average cloud cover in September: 26
The month with the most cloud cover is January (Cloud cover 30).
The months with the least cloud cover are April and July (Cloud cover 19).
Average visibility in September
Celestún, 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).
