September weather forecast
Tây Hồ, Vietnam

The first month of the autumn, September, is still a tropical month in Tây Hồ, Vietnam, with temperature in the range of an average high of 31.8°C (89.2°F) and an average low of 24.3°C (75.7°F).

Temperature

The onset of September brings with it an average high-temperature of a still hot 31.8°C (89.2°F), showing a negligible variation from the month before. Throughout September, the average low-temperature dips to a moderately hot 24.3°C (75.7°F).

Heat index

In September, the heat index is calculated to be a blistering 44°C (111.2°F). Be on the lookout: Heat cramps and heat exhaustion are anticipated. Continued exertion can result in heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The months with the highest humidity in Tây Hồ are August and September, with an average relative humidity of 80%.

Rainfall

In September, the rain falls for 19.4 days. Throughout September, 93mm (3.66") of precipitation is accumulated. Throughout the year, there are 182.1 rainfall days, and 615mm (24.21") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of September, sunrise is at 05:40 and sunset at 18:12. On the last day of the month, sunrise is at 05:47 and sunset at 17:45 +07.

Sunshine

In Tây Hồ, the average sunshine in September is 8.3h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days.