September weather forecastIlam, Nepal

Weather in September

With the gradual transition towards autumn, September in Ilam manifests a discernible drop in rainfall cresting at 303mm (11.93"). The onset of fall introduces a mild touch to the weather, marking a break from the intense monsoon months. The city welcomes a drop in temperature and rainfall, becoming slightly more comfortable. As Ilam enters its fall season, the climate begins to dry, setting the scene for the forthcoming cooler months. The change from a humid monsoon atmosphere towards a milder fall sets September apart in the climatological canvas of the city.

Temperature

Ilam's September reports an average high-temperature of a moderately hot 29.5°C (85.1°F), exhibiting a minor difference from August. During September, the temperature is averaged to a low of 23°C (73.4°F) at night.

Heat index

For most parts of September, the heat index is evaluated at a torrid 36°C (96.8°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Understanding the heat index involves considering values for shaded locales with light wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In September, the average relative humidity is 79%.

Rainfall

In September, the rain falls for 27.7 days. Throughout September, 303mm (11.93") of precipitation is accumulated. In Ilam, during the entire year, the rain falls for 207.7 days and collects up to 2007mm (79.02") of precipitation.

Daylight

The average length of the day in September is 12h and 19min.
On the first day of September, sunrise is at 5:32 am and sunset at 6:13 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 5:40 pm +0545.

Sunshine

In Ilam, the average sunshine in September is 8.4h.

UV index

In Ilam, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.