September weather forecast
Wattegama, Sri Lanka

September, the first month of the autumn in Wattegama, is still a warm month, with an average temperature varying between 29.5°C (85.1°F) and 21.1°C (70°F).

Temperature

September's arrival brings an average high-temperature of a still warm 29.5°C (85.1°F), demonstrating subtle variation from the preceding month. An average low-temperature of 21.1°C (70°F) is observed in Wattegama during the September nights.

Heat index

September's heat index is evaluated at a torrid 35°C (95°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.
Remember that heat index calculations are made for conditions in the shade with light wind. 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 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

In Wattegama, the average relative humidity in September is 77%.

Rainfall

In Wattegama, during September, the rain falls for 23.4 days and regularly aggregates up to 118mm (4.65") of precipitation. Throughout the year, in Wattegama, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.

Daylight

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

UV index

The months with the highest UV index in Wattegama 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 rays for average individuals.
Note: A maximum high UV index of 6 in September translates into the following recommendations:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.