September weather forecastTulsipur, Nepal

Weather in September

As September rolls in, rainfall gradually begins to taper off, marking the end of monsoon and the beginning of autumn. With weather conditions transitioning, September retains its hot but pleasant climate while making way for cooler days. The humidity levels recede and the gradual fall in temperature begins to set in. The drop in rainfall also sees a decrease in cloud cover, contributing to clearer skies and enhanced visibility. The slight crescendo in wind speeds, with gusts touching 13.7km/h (8.5mph), adds to the freshness of the autumn air.

Temperature

September reports an average high-temperature of a still hot 33.6°C (92.5°F), slightly varied from August's 34.6°C (94.3°F). In Tulsipur, an average temperature of 24.7°C (76.5°F) is noted during September nights.

Heat index

The heat index value for September is estimated at a life-threatening hot 46°C (114.8°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. 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 are August and September, with an average relative humidity of 71%.

Rainfall

In Tulsipur, in September, it is raining for 14.5 days, with typically 73mm (2.87") of accumulated precipitation. Throughout the year, there are 88.5 rainfall days, and 530mm (20.87") of precipitation is accumulated.

Daylight

The average length of the day in September in Tulsipur is 12h and 20min.
On the first day of the month, sunrise is at 5:54 am and sunset at 6:36 pm. On the last day of September, sunrise is at 6:08 am and sunset at 6:02 pm +0545.

Sunshine

In Tulsipur, Nepal, the average sunshine in September is 10h.

UV index

In Tulsipur, the average daily maximum UV index in September is 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the UV index of 7 transforms into the following advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.