September weather forecast
Comilla, Bangladesh

September in Comilla marks the retreat of monsoon. There's a steady decline in rainfall and cloud cover, yet the rainfall remains at a substantial level of 134mm (5.28"). The heat starts diminishing, with temperatures beginning their descent, and humidity also sees a small reduction. Though the winds slow down a bit, they still provide a refreshing respite from any residual heat. The month ends the rainy season and welcomes the autumn's advent.

Temperature

The ushering in of September brings an average high-temperature of a still hot 31.5°C (88.7°F), closely mirroring the 31.8°C (89.2°F) of August. An average nighttime temperature of 25.1°C (77.2°F) is recorded during September.

Heat index

The heat index value for September is estimated at a blisteringly hot 44°C (111.2°F). Stay wary: Heat exhaustion and heat cramps are possible. Heatstroke can ensue from extended effort.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

July through September, with an average relative humidity of 84%, are the most humid months in Comilla.

Rainfall

In Comilla, during September, the rain falls for 25 days and regularly aggregates up to 134mm (5.28") of precipitation. In Comilla, during the entire year, the rain falls for 181.3 days and collects up to 1106mm (43.54") of precipitation.

Daylight

In September, the average length of the day is 12h and 17min.
On the first day of the month, sunrise is at 5:37 am and sunset at 6:13 pm. On the last day of September, sunrise is at 5:46 am and sunset at 5:43 pm +06.

Sunshine

In Comilla, the average sunshine in September is 7.8h.

UV index

The months with the highest UV index are March through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 7 during September translates into these guidelines:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.