September weather forecast
Ulapane, Sri Lanka

September, the first month of the autumn in Ulapane, is still a warm month, with temperature in the range of an average low of 21.1°C (70°F) and an average high of 29.5°C (85.1°F).

Temperature

Ulapane measures an average high-temperature of a still moderately hot 29.5°C (85.1°F) in September, nearly consistent with the preceding month. Throughout the nights in September, Ulapane experiences an average low-temperature of 21.1°C (70°F).

Heat index

The heat index value for September is estimated at a torrid 35°C (95°F). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Additional elements including metabolic differences, the level of physical activity, and attire have a role in shaping the individual's temperature perception. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The average relative humidity in September is 77%.

Rainfall

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

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of the month, sunrise is at 06:00 and sunset at 18:15. On the last day of September, sunrise is at 05:55 and sunset at 17:59 +0530.

Sunshine

In September, the average sunshine is 10.3h.

UV index

January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.