September weather forecastManzanillo, Mexico
September
Weather in September
September, the first month of the autumn in Manzanillo, is also a moderately hot month, with an average temperature ranging between max 29.5°C (85.1°F) and min 25°C (77°F).Temperature
As September takes hold, the average high-temperature is a moderately hot 29.5°C (85.1°F), nearly mirroring that of the previous month. Manzanillo's temperature during September nights registers a minor decrease to an average low of 25°C (77°F).Heat index
The heat index value for September is calculated to be a sweltering 36°C (96.8°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', gives a temperature feeling by integrating air temperature and humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Youths are typically more endangered than adults since they usually sweat less. Their larger skin surface concerning their smaller bodies and higher heat production due to activity further adds to their vulnerability.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
The most humid month is September, with an average relative humidity of 80%.Rainfall
September is the month with the most rainfall in Manzanillo. Rain falls for 24.6 days and accumulates 180mm (7.09") of precipitation.Sea temperature
In September, the average sea temperature is 29.8°C (85.6°F).Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) provides warmth and pleasure, making water activities enjoyable for lengthened periods without feeling uncomfortable.
Daylight
In Manzanillo, the average length of the day in September is 12h and 14min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:11 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:46 pm CST.
Sunshine
The months with the least sunshine in Manzanillo are August and September, with an average of 8.9h of sunshine.UV index
April through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 7 during September leads to these instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Experience reduced UV exposure by about half when donning a wide-brim hat. Stay aware! UV radiation is magnified when reflecting off sand and water.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Manzanillo, Mexico
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is July (30.3°C).
The month with the lowest average high temperature is February (27.6°C).
- Average low temperature in September: 25°C
The months with the highest average low temperature are July and August (25.3°C).
The coldest month (with the lowest average low temperature) is February (21.3°C).
Average pressure in September
Manzanillo, Mexico
- Average pressure in September: 1011mbar
The month with the highest atmospheric pressure is January (1014.1mbar).
The month with the lowest atmospheric pressure is September (1011mbar).
Average wind speed in September
Manzanillo, Mexico
- Average wind speed in September: 10km/h
The windiest months (with the highest average wind speed) are August and September (10km/h).
The calmest month (with the lowest average wind speed) is December (8km/h).
Average humidity in September
Manzanillo, Mexico
- Average humidity in September: 80%
The month with the highest relative humidity is September (80%).
The month with the lowest relative humidity is April (64%).
Average rainfall in September
Manzanillo, Mexico
- Average rainfall in September: 180mm
The wettest month (with the highest rainfall) is September (180mm).
The driest month (with the least rainfall) is April (0mm).
Average rainfall days in September
Manzanillo, Mexico
- Average rainfall days in September: 24.6 days
The month with the highest number of rainy days is August (26.3 days).
The month with the least rainy days is March (1.3 days).
Average sea temperature in September
Manzanillo, Mexico
- Average sea temperature in September: 29.8°C
The best month for swimming (with the highest average sea temperature) is August (29.9°C).
The coldest month (with the lowest average sea temperature) is March (25.2°C).
Average daylight in September /
Average sunshine in September
Manzanillo, Mexico
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 13h and 18min).
The month with the shortest days is December (Average daylight: 11h and 0min).
- Average sunshine in September: 8h and 54min
The months with the most sunshine are March and April (Average sunshine: 9h and 54min).
The months with the least sunshine are August and September (Average sunshine: 8h and 54min).
Average sunshine days in September
Manzanillo, Mexico
- Average sunshine days in September: 2.9 days
The month with the most sunshine days is April (29.6 days).
The month with the least sunshine days is August (2.3 days).
Average UV index in September
Manzanillo, Mexico
- Average UV index in September: 7
The months with the highest UV index are April, May, June, July, August, September and October (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 6).
Average cloud cover in September
Manzanillo, Mexico
- Average cloud cover in September: 34
The month with the most cloud cover is September (Cloud cover 34).
The months with the least cloud cover are March and April (Cloud cover 8).
Average visibility in September
Manzanillo, 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).
