September weather forecast
Cox's Bazar, Bangladesh

September marks the end of monsoon season Cox's Bazar, with a notable decrease in rainfall comparing to previous months. Daily weather still experiences substantial rainfall, this time around 114mm (4.49") on average. The receding monsoon rain is complemented by ample hours of daylight, making this month uniquely dynamic regarding weather conditions. The landscape begins to relieve itself from the monsoon's wrath, revealing the city's astounding lush beauty under the clearing sky.

Temperature

With the onset of September in Cox's Bazar, Bangladesh, the average high-temperature of a still moderately hot 29.8°C (85.6°F) mirrors that of August. The nighttime temperature in September experiences a minor dip, averaging a still moderately hot 26.1°C (79°F).

Heat index

September's mean heat index is calculated to be a sweltering 38°C (100.4°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

In Cox's Bazar, Bangladesh, the average relative humidity in September is 84%.

Rainfall

In September, the rain falls for 19.8 days. Throughout September, 114mm (4.49") of precipitation is accumulated. Throughout the year, in Cox's Bazar, there are 139.8 rainfall days, and 1055mm (41.54") of precipitation is accumulated.

Sea temperature

In Cox's Bazar, in September, the average water temperature is 29.2°C (84.6°F).
Note: In water activities such as swimming and diving, temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed highly pleasurable for extended periods without any unease.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of the month, sunrise is at 5:35 am and sunset at 6:08 pm. On the last day of September, sunrise is at 5:42 am and sunset at 5:40 pm +06.

Sunshine

In Cox's Bazar, the average sunshine in September is 8.2h.

UV index

The months with the highest UV index are March through June and September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in September interprets into the following advice:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Note! Reflective surfaces like sand and water heighten the UV radiation levels.