October weather forecast
Polonnaruwa, Sri Lanka

October, the same as September, in Polonnaruwa, Sri Lanka, is another tropical autumn month, with an average temperature varying between 23.2°C (73.8°F) and 32.7°C (90.9°F).

Temperature

In October, the average high-temperature is almost the same as in September - a still hot 32.7°C (90.9°F). In Polonnaruwa, in October, the average low-temperature is 23.2°C (73.8°F).

Heat index

The average heat index in October is computed to be a life-threatening hot 45°C (113°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'feels like', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (clothing, wind, metabolic differences). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In October, the average relative humidity is 75%.

Rainfall

October is the month with the most rainfall. Rain falls for 22.6 days and accumulates 214mm (8.43") of precipitation.

Daylight

In October, the average length of the day is 11h and 57min.
On the first day of October, sunrise is at 05:54 and sunset at 17:57. On the last day of the month, sunrise is at 05:54 and sunset at 17:45 +0530.

Sunshine

In Polonnaruwa, the average sunshine in October is 8.3h.

UV index

The months with the highest UV index in Polonnaruwa, Sri Lanka, are February through October, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 7 in October transform into the following instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Tightly woven, loose-fitting clothes provide additional protection from the Sun.