October weather forecast
Unawatuna, Sri Lanka

October marks the commencement of the dry season in Unawatuna, Sri Lanka with a significant reduction in rainfall from 222mm (8.74") to 194mm (7.64"). Weather in this month continues to be pleasant, continuing the seamless transition from September. The sea retains a calmness with the temperature holding steady at 28°C (82.4°F), making it an endearing time for marine adventurers. The weather in October stands as a threshold to the final stages of the year. November awaits with a further decrease in precipitation, steering the weather into drier months.

Temperature

At the start of October, Unawatuna's average high-temperature reaches a still moderately hot 28.8°C (83.8°F), subtly different from the preceding month. Unawatuna indicates a consistently low-temperature of 25.9°C (78.6°F) during the nights of October.

Heat index

The heat index for October is appraised at a hot 34°C (93.2°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

In October, the average relative humidity in Unawatuna, Sri Lanka, is 80%.

Rainfall

In Unawatuna, in October, during 26.3 rainfall days, 194mm (7.64") of precipitation is typically accumulated. In Unawatuna, during the entire year, the rain falls for 286.9 days and collects up to 1974mm (77.72") of precipitation.

Sea temperature

January, February, June through October and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater.
Note: For swimming, diving, and enjoying other water activities, the range of 25°C (77°F) to 29°C (84.2°F) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.

Daylight

In October, the average length of the day is 11h and 59min.
On the first day of the month, sunrise is at 05:56 and sunset at 18:00. On the last day of October, sunrise is at 05:55 and sunset at 17:49 +0530.

Sunshine

In Unawatuna, the average sunshine in October is 8.1h.

UV index

January through April, June through August, October through December, with an average maximum UV index of 7, are months with the highest UV index in Unawatuna. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high UV index of 7 in October translates into the following recommendations:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take note! The UV strength of the Sun elevates when reflected off water and sand.