October weather forecast
Gampaha, Sri Lanka

The weather in Gampaha in October reflects further transition. The rainfall inches up to 224mm (8.82") amid the receding monsoon. Despite the high rainfall, daylight and sunshine hours increase, indicating a gradual return to warmer days. The persistence of strong winds helps to keep the temperatures and humidity in check. October continues September's trend of transition, signaling the end of the monsoon season and the onset of the drier, warmer months.

Temperature

On the advent of October, Gampaha's average high-temperature exhibits a minor adjustment to a still warm 29.9°C (85.8°F) from September's 29.5°C (85.1°F). The month of October in Gampaha, Sri Lanka, is marked by an average minimum temperature of 25.1°C (77.2°F), slightly cooler than its daytime counterpart.

Heat index

The heat index value for October is appraised at a torrid 37°C (98.6°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital 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.
To achieve cooling, the human body employs perspiration, relying on the subsequent evaporation of sweat. Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

The average relative humidity in October is 79%.

Rainfall

In Gampaha, during October, the rain falls for 25.9 days and regularly aggregates up to 224mm (8.82") of precipitation. Throughout the year, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Daylight

The average length of the day in October is 11h and 58min.
On the first day of the month, sunrise is at 05:57 and sunset at 18:01. On the last day of October, in Gampaha, sunrise is at 05:57 and sunset at 17:49 +0530.

Sunshine

In October, the average sunshine is 7.8h.

UV index

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 6 in October leads to these recommendations:
Ward off overexposure. Defence against solar harm is crucial. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.