October weather forecast
Batuwatta, Sri Lanka

October, the same as September, is another warm autumn month in Batuwatta, Sri Lanka, with temperature in the range of an average high of 29.4°C (84.9°F) and an average low of 20.7°C (69.3°F).

Temperature

The advent of October presents an average high-temperature of a still moderately hot 29.4°C (84.9°F), maintaining a close correlation with the preceding month. During October nights, Batuwatta records an average temperature of 20.7°C (69.3°F).

Heat index

During October, the heat index is computed to be a sweltering 36°C (96.8°F). Adopt heightened preventive measures, heat exhaustion and heat cramps are probable. Persistent activity could lead to heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is the result of factoring in humidity to the air temperature, indicating perceived warmth. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are particularly meaningful for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

In October, the average relative humidity is 80%.

Rainfall

October is the month with the most rainfall. Rain falls for 27.4 days and accumulates 301mm (11.85") of precipitation.

Daylight

In Batuwatta, Sri Lanka, the average length of the day in October is 11h and 58min.
On the first day of October, sunrise is at 05:58 and sunset at 18:01. On the last day of the month, sunrise is at 05:57 and sunset at 17:50 +0530.

Sunshine

In Batuwatta, the average sunshine in October is 7.9h.

UV index

With an average maximum UV index of 5, October is the month with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 5 during October translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.