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

The arrival of October brings an average high-temperature of a still moderately hot 28.8°C (83.8°F), subtly diverging from September's 28.3°C (82.9°F). Unawatuna maintains a consistent average nighttime low-temperature of 25.9°C (78.6°F) throughout October.

Heat index

Throughout October, the heat index is computed to be a tropical 34°C (93.2°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is the result of factoring in humidity to the air temperature, indicating perceived warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.

Humidity

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

Rainfall

In Unawatuna, in October, it is raining for 26.3 days, with typically 194mm (7.64") of accumulated precipitation. Throughout the year, there are 286.9 rainfall days, and 1974mm (77.72") of precipitation is accumulated.

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: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

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

Sunshine

The average sunshine in October is 8.1h.

UV index

The months with the highest UV index are January through April, June through August, October through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 7 in October suggests the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Note! Reflective surfaces like sand and water heighten the UV radiation levels.