September weather forecastBiswan, India

September

Weather in September

September, the last month of the rainy (monsoon) season in Biswan, is another tropical month, with an average temperature ranging between min 25.1°C (77.2°F) and max 33.3°C (91.9°F).

Temperature

The advent of September presents an average high-temperature of a still tropical 33.3°C (91.9°F), maintaining a close correlation with the preceding month. Biswan observes an average low-temperature of 25.1°C (77.2°F) during September.

Heat index

In September, the average heat index is computed to be a burning hot 45°C (113°F). Be prepared: Heat cramps and heat exhaustion are probable. Continued activity may lead to heatstroke.
Heat index values are typically calculated for conditions of shade and a light breeze. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', embodies the combination of air temperature and moisture content to illustrate perceived heat. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. 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 highly critical to babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

The average relative humidity in September is 71%.

Rainfall

In Biswan, in September, during 15.8 rainfall days, 86mm (3.39") of precipitation is typically accumulated. In Biswan, during the entire year, the rain falls for 94.1 days and collects up to 567mm (22.32") of precipitation.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 5:45 am and sunset at 6:26 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 5:53 pm IST.

Sunshine

In Biswan, India, the average sunshine in September is 9.9h.

UV index

In Biswan, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: In September, a regular UV index of 7 translates into these guidelines:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Frequently asked questions

September temperatures vary between a high-temperature of 33.3°C (91.9°F) and a low-temperature of 25.1°C (77.2°F). In September, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 45°C (113°F).

In Biswan, the average relative humidity in September is 71%.

In September, the rain falls for 15.8 days. Throughout September, 86mm (3.39") of precipitation is accumulated.

The average day length in September is 12h and 19min.

In September, on the first day of the month, sunrise is at 5:45 am and sunset at 6:26 pm. On the last day of the month, in Biswan, sunrise is at 5:58 am and sunset at 5:53 pm IST.

In September, the average sunshine duration is 9.9h.

In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Biswan, India

  • Average high temperature in September: 33.3°C

The warmest month (with the highest average high temperature) is May (42.2°C).
The month with the lowest average high temperature is January (22.3°C).

  • Average low temperature in September: 25.1°C

The month with the highest average low temperature is June (30.8°C).
The coldest month (with the lowest average low temperature) is January (10°C).

Average pressure in September
Biswan, India

  • Average pressure in September: 1003.6mbar

The month with the highest atmospheric pressure is January (1015.7mbar).
The month with the lowest atmospheric pressure is June (997mbar).

Average wind speed in September
Biswan, India

  • Average wind speed in September: 9.4km/h

The windiest months (with the highest average wind speed) are April and May (12.4km/h).
The calmest month (with the lowest average wind speed) is October (6.9km/h).

Average humidity in September
Biswan, India

  • Average humidity in September: 71%

The month with the highest relative humidity is August (72%).
The month with the lowest relative humidity is April (22%).

Average rainfall in September
Biswan, India

  • Average rainfall in September: 86mm

The wettest month (with the highest rainfall) is July (203mm).
The driest month (with the least rainfall) is November (1mm).

Average rainfall days in September
Biswan, India

  • Average rainfall days in September: 15.8 days

The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is December (0.9 days).

Average daylight in September /
Average sunshine in September
Biswan, India

  • Average daylight in September: 12h and 18min

The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).

  • Average sunshine in September: 9h and 54min

The months with the most sunshine are April and May (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 7h and 12min).

Average sunshine days in September
Biswan, India

  • Average sunshine days in September: 12.7 days

The month with the most sunshine days is December (29.9 days).
The month with the least sunshine days is July (6.3 days).

Average UV index in September
Biswan, India

  • Average UV index in September: 7

The month with the highest UV index is May (UV index 9).
The months with the lowest UV index are January and December (UV index 5).

Average cloud cover in September
Biswan, India

  • Average cloud cover in September: 34

The month with the most cloud cover is July (Cloud cover 47).
The months with the least cloud cover are November and December (Cloud cover 6).

Average visibility in September
Biswan, India

  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The months with the lowest visibility are July, August and September (9km).