October weather forecast
Kalmunai, Sri Lanka

The month of October marks the onset of the second monsoonal phase in Kalmunai. Rainfall climbs up to 177mm (6.97") adding a distinctly moist charm to the city. Aside from rainfall, all other parameters experience a slight decrease, enhancing the cool and soothing effect of monsoon. October is a rain lover's paradise, with the city dressed in a fresh, dewy appeal. It is the perfect time for those who enjoy the romance of rainfall to visit the city.

Temperature

The transition from September to October brings an average high-temperature of a still tropical 31°C (87.8°F), barely different from September's 31.8°C (89.2°F). In October, Kalmunai experiences an average nighttime temperature of 25.1°C (77.2°F).

Heat index

The heat index in October is computed to be a scorching 40°C (104°F). Use additional protective measures, heat cramps and heat exhaustion are possible outcomes. Continuous activity might lead to heatstroke.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. The impression of weather on a person can be swayed by additional aspects, including metabolic variations, pregnancy, and activity levels. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. When the level of relative humidity is elevated, evaporation diminishes, causing more warmth to be retained in the body than in dry air. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In October, the average relative humidity is 76%.

Rainfall

In Kalmunai, in October, during 25.5 rainfall days, 177mm (6.97") of precipitation is typically accumulated. In Kalmunai, during the entire year, the rain falls for 237.8 days and collects up to 1259mm (49.57") of precipitation.

Sea temperature

In Kalmunai, the average seawater temperature in October is 29°C (84.2°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In October, the average length of the day is 11h and 58min.
On the first day of October, sunrise is at 05:50 and sunset at 17:53. On the last day of the month, sunrise is at 05:50 and sunset at 17:42 +0530.

Sunshine

In Kalmunai, the average sunshine in October is 8.7h.

UV index

January through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the average person.
Note: A maximum UV index of 7 in October translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.