October weather forecast
Polonnaruwa, Sri Lanka

As the last quarter of the year unfolds, October achieves the record for the highest average rainfall in Polonnaruwa, with precipitation peaking at 214mm (8.43"). The increased rainfall and slightly cooler temperatures offer relief from the consistent warmth of the previous months. The transition into the rainiest phase of the year paves the way for similar weather conditions in November.

Temperature

October's advent presents an average high-temperature of a still hot 32.7°C (90.9°F), indicating a slight variation from the conditions of the previous month. Nighttime temperature lowers to an average of 23.2°C (73.8°F) in October.

Heat index

October's mean heat index is evaluated at a burning hot 45°C (113°F). Precaution: Heat cramps along with heat exhaustion are possible. Heatstroke is a serious risk with continued exertion.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
As a reaction to high temperatures, the human body begins to perspire, using the evaporation of sweat to lower its temperature. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in October is 75%.

Rainfall

The month with the most rainfall is October, when the rain falls for 22.6 days and typically aggregates up to 214mm (8.43") of precipitation.

Daylight

The average length of the day in October 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 October, the average sunshine is 8.3h.

UV index

The months with the highest UV index are February through October, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A daily maximum UV index of 7 in October translates into the following instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.