September weather forecast
Barisal, Bangladesh

September signals a gradual recline of the Monsoon in Barisal, with reduced rainfall and cloud occurrence. The city experiences an average fall in 31.7°C (89.1°F) of temperature, reflecting the inceptive shift towards autumn. Along with this, the winds intensify, and the pressure stabilizes from the previous month's low. Casual outdoor activities become more frequent with improved visibility and controlled humidity levels. Despite the decline, rainfall and cloudiness remain significantly high, reminding of the just-concluded monsoon season.

Temperature

The initiation of September records an average high-temperature of a still hot 31.7°C (89.1°F), displaying a near consistency with the previous month. In the month of September, Barisal records a consistent average low-temperature of 26.4°C (79.5°F).

Heat index

The heat index value for September is computed to be a blisteringly hot 44°C (111.2°F). Keep on guard: Heat exhaustion and heat cramps are probable. Heatstroke is a possible danger with ongoing physical activity.
For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', provides an understanding of perceived warmth by combining temperature and relative humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

July and September, with an average relative humidity of 81%, are the most humid months.

Rainfall

In September, in Barisal, the rain falls for 22.2 days. Throughout September, 61mm (2.4") of precipitation is accumulated. Throughout the year, in Barisal, there are 148.8 rainfall days, and 501mm (19.72") of precipitation is accumulated.

Daylight

In September, the average length of the day in Barisal is 12h and 17min.
On the first day of the month, sunrise is at 5:41 am and sunset at 6:15 pm. On the last day of September, in Barisal, sunrise is at 5:49 am and sunset at 5:47 pm +06.

Sunshine

In September, the average sunshine is 8.6h.

UV index

The average daily maximum UV index in September in Barisal, Bangladesh, is 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum UV index of 7 during September leads to these instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.