October weather forecast
Negombo, Sri Lanka

October in Negombo, Sri Lanka, is known for its minor decrease in temperature compared to September. Sunny days become more prevalent, providing ample opportunities for sightseeing and outdoor activities. Constant rainfall ensures that Negombo's greenery continues to be vibrant and lush. Lower wind speeds further enhance the pleasant atmosphere, perfect for leisure walks along the beach. October also enjoys high visibility, advantageous for photography and nature viewing.

Temperature

At the onset of October, Negombo records an average high-temperature of a still warm 29.9°C (85.8°F), showing little deviation from the preceding month. Negombo records a slight downturn to an average a still moderately hot 25.1°C (77.2°F) during the nights of October.

Heat index

October's heat index is computed to be a sweltering 37°C (98.6°F). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Heat index data is primarily for areas with shade and subjected to light winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
In high temperatures, perspiration kicks in, allowing the human body to cool down through the evaporation of sweat. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In Negombo, the average relative humidity in October is 79%.

Rainfall

In Negombo, in October, during 25.9 rainfall days, 224mm (8.82") of precipitation is typically accumulated. Throughout the year, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Sea temperature

In Negombo, in October, the average water temperature is 28.5°C (83.3°F).
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

The average length of the day in October in Negombo is 11h and 58min.
On the first day of the month, sunrise is at 05:58 and sunset at 18:01. On the last day of October, sunrise is at 05:58 and sunset at 17:50 +0530.

Sunshine

The average sunshine in October is 7.8h.

UV index

The months with the lowest UV index are May, June, August and October, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: A typical high UV index of 6 in October suggests the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Beware! Reflections from sand and water can intensify the Sun's UV radiation.