September weather forecastSamastipur, India
September
Weather in September
September, the last month of the rainy (monsoon) season in Samastipur, is another tropical month, with temperature in the range of an average low of 26.2°C (79.2°F) and an average high of 33.7°C (92.7°F).Temperature
Samastipur sees the arrival of September with an average high-temperature of a still tropical 33.7°C (92.7°F), indicating a subtle variation from August. During the September nights, an average temperature of 26.2°C (79.2°F) is observed in Samastipur, India.Heat index
September's average heat index is evaluated at a life-threatening hot 46°C (114.8°F). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.The heat index's values are generally associated with conditions in shade and light breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', comes about by integrating the temperature readings with the humidity levels. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Increasing body temperatures can be a precursor to dehydration if the body can't shed the extra heat.
Humidity
With an average relative humidity of 71%, September is the most humid month in Samastipur, India.Rainfall
In Samastipur, during September, the rain falls for 18.8 days and regularly aggregates up to 134mm (5.28") of precipitation. In Samastipur, during the entire year, the rain falls for 112.2 days and collects up to 674mm (26.54") of precipitation.Daylight
In Samastipur, the average length of the day in September is 12h and 19min.On the first day of the month, sunrise is at 5:27 am and sunset at 6:06 pm. On the last day of September, in Samastipur, India, sunrise is at 5:38 am and sunset at 5:34 pm IST.
Sunshine
In September, the average sunshine in Samastipur is 8.5h.UV index
In September, the average daily maximum UV index in Samastipur is 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The UV index of 7 during September translates into the following guidance:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Samastipur, India
- Average high temperature in September: 33.7°C
The warmest month (with the highest average high temperature) is May (40.2°C).
The month with the lowest average high temperature is January (23.6°C).
- Average low temperature in September: 26.2°C
The month with the highest average low temperature is June (29.8°C).
The coldest month (with the lowest average low temperature) is January (11.8°C).
Average pressure in September
Samastipur, India
- Average pressure in September: 1004mbar
The month with the highest atmospheric pressure is January (1015.8mbar).
The month with the lowest atmospheric pressure is June (998.3mbar).
Average wind speed in September
Samastipur, India
- Average wind speed in September: 10.1km/h
The windiest month (with the highest average wind speed) is May (14.3km/h).
The calmest month (with the lowest average wind speed) is November (7.4km/h).
Average humidity in September
Samastipur, India
- Average humidity in September: 71%
The month with the highest relative humidity is September (71%).
The month with the lowest relative humidity is April (30%).
Average rainfall in September
Samastipur, India
- Average rainfall in September: 134mm
The wettest month (with the highest rainfall) is July (209mm).
The driest month (with the least rainfall) is November (1mm).
Average rainfall days in September
Samastipur, India
- Average rainfall days in September: 18.8 days
The month with the highest number of rainy days is July (24.8 days).
The month with the least rainy days is November (0.5 days).
Average daylight in September /
Average sunshine in September
Samastipur, India
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is April (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 7h and 24min).
Average sunshine days in September
Samastipur, India
- Average sunshine days in September: 9.1 days
The month with the most sunshine days is December (30.1 days).
The month with the least sunshine days is July (4.8 days).
Average UV index in September
Samastipur, India
- Average UV index in September: 7
The months with the highest UV index are March, April, May and June (UV index 8).
The months with the lowest UV index are January and December (UV index 5).
Average cloud cover in September
Samastipur, India
- Average cloud cover in September: 38
The month with the most cloud cover is July (Cloud cover 50).
The months with the least cloud cover are November and December (Cloud cover 6).
Average visibility in September
Samastipur, 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).





