September weather forecast
Cổ Nhuế, Vietnam

September, the first month of the autumn in Cổ Nhuế, is also a hot month, with an average temperature fluctuating between 24.2°C (75.6°F) and 31.7°C (89.1°F).

Temperature

The advent of September signifies a minor shift to an average high-temperature of a still hot 31.7°C (89.1°F), aligning closely with August. Cổ Nhuế, during September, witnesses an average low-temperature of 24.2°C (75.6°F).

Heat index

September's heat index is computed to be a blistering 43°C (109.4°F). Caution: Heat cramps along with heat exhaustion are expected. Sustained activity could lead to heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

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

Rainfall

In Cổ Nhuế, Vietnam, in September, it is raining for 18.5 days, with typically 73mm (2.87") of accumulated precipitation. In Cổ Nhuế, during the entire year, the rain falls for 181.2 days and collects up to 595mm (23.43") of precipitation.

Daylight

The average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 05:40 and sunset at 18:13. On the last day of September, sunrise is at 05:47 and sunset at 17:45 +07.

Sunshine

The average sunshine in September is 8.5h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for the average person.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.