September weather forecast
Lemsikhali, Bangladesh

The first month of the autumn, September, is a tropical month in Lemsikhali, Bangladesh, with an average temperature varying between 25.6°C (78.1°F) and 30.1°C (86.2°F).

Temperature

The arrival of September denotes a barely perceptible change in the average high-temperatures to a hot 30.1°C (86.2°F) from August's 29.8°C (85.6°F). Throughout September, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 25.6°C (78.1°F).

Heat index

The heat index in September is estimated at a fiery hot 39°C (102.2°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
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 effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

In Lemsikhali, the average relative humidity in September is 85%.

Rainfall

In Lemsikhali, Bangladesh, during September, the rain falls for 27.8 days and regularly aggregates up to 201mm (7.91") of precipitation. Throughout the year, in Lemsikhali, there are 183.8 rainfall days, and 1579mm (62.17") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 5:35 am and sunset at 6:09 pm. On the last day of September, sunrise is at 5:43 am and sunset at 5:41 pm +06.

Sunshine

The average sunshine in September is 8.4h.

UV index

March through June and September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. 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. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.