September weather forecast
Manihari, India

The last month of the rainy (monsoon) season, September, is also a hot month in Manihari, India, with an average temperature fluctuating between 32.5°C (90.5°F) and 25.5°C (77.9°F).

Temperature

With the start of September, Manihari measures an average high-temperature of a still tropical 32.5°C (90.5°F), not significantly differing from August's 33.2°C (91.8°F). During September, Manihari witnesses a consistent average low-temperature of 25.5°C (77.9°F).

Heat index

In September, the heat index is calculated to be a blazing hot 45°C (113°F). Forewarned: Heat cramps and heat exhaustion are anticipated. Ongoing physical activity increases the likelihood of heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
The human body keeps its cool primarily through perspiration, as this process enables sweat to evaporate, taking away the excess heat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In Manihari, the average relative humidity in September is 77%.

Rainfall

In Manihari, during September, the rain falls for 20.8 days and regularly aggregates up to 172mm (6.77") of precipitation. In Manihari, during the entire year, the rain falls for 138.5 days and collects up to 951mm (37.44") of precipitation.

Daylight

In September, the average length of the day is 12h and 18min.
On the first day of September, sunrise is at 5:20 am and sunset at 5:58 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 5:27 pm IST.

Sunshine

In Manihari, India, the average sunshine in September is 7.7h.

UV index

The average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A typical high UV index of 7 in September suggests the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.