September weather forecast
Janakpur, Nepal

September indicates a shift in the weather dynamics of Janakpur, Nepal, with the monsoon season slowly retreating. Rainfall drops to 147mm (5.79"), and the number of wet days decreases, marking a gradual easing of the monsoon clutch. Although brief showers are still frequent, prolonged periods of sunshine beautifully intersperse them. This slow withdrawal accompanied by still warm temperatures make the month a blend of monsoon reminiscence and autumn anticipation. Therefore, September offers a glimpse of the post-monsoon freshness while still preserving the monsoon's lingering touch.

Temperature

Janakpur records an average high-temperature of a still tropical 32.8°C (91°F) in September, maintaining a close correlation with August's 34.2°C (93.6°F). During September, Janakpur witnesses a consistent average low-temperature of 24.6°C (76.3°F).

Heat index

In September, the average heat index is computed to be a life-threatening hot 45°C (113°F). Note: Heat exhaustion and heat cramps are probable. Heatstroke can follow with prolonged activity.
Heat index values are typically calculated for conditions of shade and a light breeze. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.

Humidity

The most humid month is September, with an average relative humidity of 74%.

Rainfall

In Janakpur, in September, during 23 rainfall days, 147mm (5.79") of precipitation is typically accumulated. In Janakpur, during the entire year, the rain falls for 141 days and collects up to 828mm (32.6") of precipitation.

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of the month, sunrise is at 5:40 am and sunset at 6:21 pm. On the last day of September, sunrise is at 5:53 am and sunset at 5:48 pm +0545.

Sunshine

The average sunshine in September is 9.9h.

UV index

In Janakpur, the average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: A daily high UV index of 7 in September leads to these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. 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. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.