September weather forecast
Guwahati, India

September in Guwahati carries the essence of the fading monsoon, leaving behind a remnants of the wet season. The city witnesses a marked decrease in rainfall, yet enjoys a significant share of the monsoon showers. The bustling monsoon greenery persists, aided by the dwindling showers and stabilizing temperature. With rainfall falling to around 199mm (7.83"), September starts to dry out in comparison to previous months. Despite diminutive rain showers, Guwahati continues to revel under substantial daylight, hinting at the approaching autumn season.

Temperature

Welcoming September, Guwahati notes an average high-temperature of a still tropical 31.4°C (88.5°F), nearly consistent with August's 32.1°C (89.8°F). Throughout September, an average low-temperature of 24.4°C (75.9°F) is experienced in Guwahati, India.

Heat index

The average heat index in September is computed to be a blistering 43°C (109.4°F). Remain alert: Heat exhaustion and heat cramps are predicted. Extended effort can lead to heatstroke.
Be informed that the heat index values are oriented around shady conditions and gentle breezes. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant 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.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. 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. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

The months with the highest humidity in Guwahati are July and September, with an average relative humidity of 83%.

Rainfall

In Guwahati, in September, during 13.3 rainfall days, 199mm (7.83") of precipitation is typically accumulated. Throughout the year, there are 111.3 rainfall days, and 1722mm (67.8") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of the month, sunrise is at 5:03 am and sunset at 5:42 pm. On the last day of September, in Guwahati, India, sunrise is at 5:15 am and sunset at 5:10 pm IST.

Sunshine

In Guwahati, the average sunshine in September is 4.6h.