September weather forecastCái Nhum, Vietnam
September
Weather in September
The first month of the autumn, September, is still a hot month in Cái Nhum, Vietnam, with an average temperature ranging between max 31.2°C (88.2°F) and min 24.8°C (76.6°F).Temperature
Transitioning into September, Cái Nhum records an average high-temperature of a still hot 31.2°C (88.2°F), almost identical to August's 32°C (89.6°F). In the month of September, Cái Nhum records a consistent average low-temperature of 24.8°C (76.6°F).Heat index
Throughout September, the heat index is estimated at a scorching 42°C (107.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Heat index values may surge by up to 15 Fahrenheit (8 Celsius) degrees in the presence of direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are essentially critical for children. 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. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.
Humidity
July, September and October, with an average relative humidity of 81%, are the most humid months.Rainfall
In Cái Nhum, in September, it is raining for 20.2 days, with typically 44mm (1.73") of accumulated precipitation. In Cái Nhum, during the entire year, the rain falls for 159.5 days and collects up to 359mm (14.13") of precipitation.Daylight
The average length of the day in September is 12h and 11min.On the first day of the month, sunrise is at 05:46 and sunset at 18:04. On the last day of September, sunrise is at 05:44 and sunset at 17:46 +07.
Sunshine
In Cái Nhum, the average sunshine in September is 7.4h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 7 in September translates into these instructions:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Cái Nhum, Vietnam
- Average high temperature in September: 31.2°C
The warmest months (with the highest average high temperature) are March and April (35.3°C).
The month with the lowest average high temperature is December (30.8°C).
- Average low temperature in September: 24.8°C
The month with the highest average low temperature is May (26.2°C).
The coldest month (with the lowest average low temperature) is January (22.1°C).
Average pressure in September
Cái Nhum, Vietnam
- Average pressure in September: 1008.4mbar
The month with the highest atmospheric pressure is January (1011.5mbar).
The months with the lowest atmospheric pressure are June and July (1007.7mbar).
Average wind speed in September
Cái Nhum, Vietnam
- Average wind speed in September: 11.3km/h
The windiest month (with the highest average wind speed) is March (13.3km/h).
The calmest month (with the lowest average wind speed) is October (8.8km/h).
Average humidity in September
Cái Nhum, Vietnam
- Average humidity in September: 81%
The months with the highest relative humidity are July, September and October (81%).
The month with the lowest relative humidity is March (64%).
Average rainfall in September
Cái Nhum, Vietnam
- Average rainfall in September: 44mm
The wettest month (with the highest rainfall) is August (64mm).
The driest month (with the least rainfall) is February (2mm).
Average rainfall days in September
Cái Nhum, Vietnam
- Average rainfall days in September: 20.2 days
The month with the highest number of rainy days is August (22.2 days).
The month with the least rainy days is February (2.2 days).
Average daylight in September /
Average sunshine in September
Cái Nhum, Vietnam
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 7h and 24min
The month with the most sunshine is April (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 6h and 24min).
Average sunshine days in September
Cái Nhum, Vietnam
- Average sunshine days in September: 6.9 days
The month with the most sunshine days is March (25.5 days).
The month with the least sunshine days is August (6 days).
Average UV index in September
Cái Nhum, Vietnam
- Average UV index in September: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in September
Cái Nhum, Vietnam
- Average cloud cover in September: 48
The months with the most cloud cover are July and September (Cloud cover 48).
The month with the least cloud cover is February (Cloud cover 24).
Average visibility in September
Cái Nhum, Vietnam
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May and December (10km).
The months with the lowest visibility are June, July, August, September, October and November (9km).





