September weather forecast
Galaha, Sri Lanka

The first month of the autumn, September, is still a warm month in Galaha, Sri Lanka, with an average temperature ranging between min 21.1°C (70°F) and max 29.5°C (85.1°F).

Temperature

As September unfolds, the average high-temperature reaches a still moderately hot 29.5°C (85.1°F), hinting at a slight fluctuation from the previous month. Galaha's average low-temperature during September nights is observed to be a pleasant 21.1°C (70°F).

Heat index

During September, the heat index is appraised at a sweltering 35°C (95°F). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'real feel' or 'feels like', arises from combining readings of air temperature and relative moisture content. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
The process of perspiration is vital for the human body to get rid of excess warmth by allowing sweat to evaporate. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in September is 77%.

Rainfall

In Galaha, in September, it is raining for 23.4 days, with typically 118mm (4.65") of accumulated precipitation. Throughout the year, in Galaha, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

In Galaha, Sri Lanka, the average length of the day in September is 12h and 10min.
On the first day of September, sunrise is at 05:59 and sunset at 18:14. On the last day of the month, sunrise is at 05:55 and sunset at 17:59 +0530.

Sunshine

In Galaha, the average sunshine in September is 10.3h.

UV index

The months with the highest UV index in Galaha are January through September, November and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily high UV index of 6 in September leads to these guidelines:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.