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

September's presence in Lahan marks an average high-temperature of a still hot 32.8°C (91°F), subtly varied from August's 34.2°C (93.6°F). In Lahan, the average nighttime temperature during September is a warm 24.6°C (76.3°F).

Heat index

For most parts of September, the heat index is appraised at a burning hot 45°C (113°F). Take heed: Heat exhaustion and heat cramps are anticipated. Heatstroke is a potential outcome of continuous activity.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. 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 essentially critical for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Sweat evaporation, driven by perspiration, is the method the human body uses to rid itself of excessive warmth. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.

Humidity

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

Rainfall

In Lahan, Nepal, in September, it is raining for 23 days, with typically 147mm (5.79") of accumulated precipitation. Throughout the year, in Lahan, 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 September, the average sunshine is 9.9h.

UV index

The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: In September, a regular UV index of 7 translates into these guidelines:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.