October weather forecast
Ratnapura, Sri Lanka

October stands out from the lot by encountering the highest rainfall levels of 357mm (14.06") in Ratnapura's annual weather pattern. Temperatures maintain an average high of 28.5°C (83.3°F), while the high humidity associated with monsoons prevails. A marginal decrease in wind speeds happens in October, having little effect on the overall weather dynamics of this city.

Temperature

The commencement of October in Ratnapura records an average high-temperature of a still warm 28.5°C (83.3°F), barely varying from September's 27.5°C (81.5°F). In the month of October, Ratnapura experiences an average low-temperature of 20.8°C (69.4°F).

Heat index

October's mean heat index is evaluated at a fiery hot 35°C (95°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Understand that the heat index values take into account shaded locations and mild winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', combines both the air temperature and the humidity level to give a perceived human temperature. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

The average relative humidity in October is 86%.

Rainfall

The month with the most rainfall is October, when the rain falls for 28.5 days and typically aggregates up to 357mm (14.06") of precipitation.

Daylight

In October, the average length of the day is 11h and 59min.
On the first day of October in Ratnapura, Sri Lanka, sunrise is at 05:56 and sunset at 17:59. On the last day of the month, sunrise is at 05:55 and sunset at 17:48 +0530.

Sunshine

In October, the average sunshine in Ratnapura is 7.3h.

UV index

The months with the lowest UV index in Ratnapura are September and October, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In October, the average maximum UV index of 5 translates into the following recommendations:
Take precautions - Protection against skin and eye damage is obliged. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended.