, the first month of the autumn, in Wenzhou
, is also a moderately hot month, with average temperature ranging between min 21.9°C (71.4°F) and max 28.8°C (83.8°F).
In Wenzhou, the average high-temperature slightly decreases, from a hot 31.9°C (89.4°F) in August
, to a moderately hot 28.8°C (83.8°F). In September, in Wenzhou, the average low-temperature is 21.9°C (71.4°F).
The average heat index in September is estimated at a tropical 34.4°C (93.9°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.Note
: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like clothing, metabolic differences, pregnancy, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
In September, the average relative humidity in Wenzhou, China
, is 81%.
In Wenzhou, it is raining for 13.4 days, with typically 204.9mm (8.07") of accumulated precipitation. Throughout the year, there are 174.7 rainfall days, and 1742.4mm (68.6") of precipitation is accumulated.
In September, the average sea temperature in Wenzhou is 26.9°C (80.4°F).Note
: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
The average length of the day in Wenzhou is 12.3h.
The average sunshine in Wenzhou is 5.5h.
The average daily maximum UV index in September is 10. A UV Index of 8 to 10 symbolizes a very high threat to health from unprotected exposure to the Sun's UV rays for the average person.Note
: In September, the average maximum UV index of 10 translate into the following recommendations:
Take extra precautions. Protection against sun damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.