September weather forecast
Lahan, Nepal

September brings a sense of respite to the people of Lahan, Nepal as it marks the end of the monsoon season. A noticeable dip in rainfall, down to 147mm (5.79"), signifies the start of the transition into autumn. Temperatures remain relatively high and humidity begins its descent. Wind conditions see a slight reduction, creating a calm and serene atmosphere. The city once again starts enjoying ample sunshine and daylight hours.

Temperature

The arrival of September denotes a barely perceptible change in the average high-temperatures to a still tropical 32.8°C (91°F) from August's 34.2°C (93.6°F). The average low-temperature during September nights is a warm 24.6°C (76.3°F).

Heat index

The heat index in September is calculated to be a burning hot 45°C (113°F). Careful: Heat exhaustion and heat cramps are anticipated. With ongoing exertion, heatstroke becomes a possibility.
The standards for the heat index are set for locations in shade and under light breezes. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In the presence of abundant moisture in the atmosphere, the cooling process through evaporation is hindered, causing the body to feel excessively warm. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.

Humidity

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

Rainfall

In September, the rain falls for 23 days. Throughout September, 147mm (5.79") of precipitation is accumulated. Throughout the year, there are 141 rainfall days, and 828mm (32.6") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of the month, sunrise is at 5:38 am and sunset at 6:19 pm. On the last day of September, sunrise is at 5:51 am and sunset at 5:46 pm +0545.

Sunshine

In Lahan, Nepal, the average sunshine in September is 9.9h.

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 average individuals.
Note: An average maximum UV index of 7 in September leads to these recommendations:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.