September weather forecast
Khulna, Bangladesh

September observes a change in trend as monsoon starts to retreat, and autumn begins to spread its wings. A notable decrease in rainfall from 209mm (8.23") in August to 145mm (5.71") in September signals the end of the monsoon season. Despite the reduced rainfall, humidity remains high, often creating a sticky atmosphere. Daylight hours increase, anticipating the clearer days that follow. The departure of monsoon allows the city to slowly return to its beautiful and dry days, setting the stage for the forthcoming festive season.

Temperature

The transition into September in Khulna is marked with an average high-temperature of a still tropical 31.9°C (89.4°F), showing an insignificant shift from August's 32.4°C (90.3°F). Khulna anticipates an average minimum temperature of 26.3°C (79.3°F) in the month of September.

Heat index

The heat index for September is estimated at a scorching 44°C (111.2°F). Remain alert: Heat exhaustion and heat cramps are predicted. Extended effort can lead to heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The months with the highest humidity in Khulna are July through September, with an average relative humidity of 80%.

Rainfall

In Khulna, in September, during 26.4 rainfall days, 145mm (5.71") of precipitation is typically accumulated. In Khulna, Bangladesh, during the entire year, the rain falls for 183.1 days and collects up to 1141mm (44.92") of precipitation.

Daylight

The average length of the day in September in Khulna is 12h and 17min.
On the first day of September in Khulna, sunrise is at 5:44 am and sunset at 6:19 pm. On the last day of the month, sunrise is at 5:53 am and sunset at 5:50 pm +06.

Sunshine

In September, the average sunshine is 8.4h.

UV index

March through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A daily maximum UV index of 7 in September translates into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.