November weather forecast
Dematagahapelessa, Sri Lanka

The last month of the autumn, November, is also a moderately hot month in Dematagahapelessa, Sri Lanka, with an average temperature varying between 21°C (69.8°F) and 29.6°C (85.3°F).

Temperature

Dematagahapelessa experiences an average high-temperature of a moderately hot 29.6°C (85.3°F) in November, subtly different from October's 30.9°C (87.6°F). An average low-temperature of 21°C (69.8°F) is recorded in the month of November.

Heat index

The heat index value during November is calculated to be a torrid 37°C (98.6°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often disregard the necessity to rest and hydrate. Thirst usually indicates advanced dehydration - hence, it is key to stay hydrated, particularly during ongoing physical activities.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In Dematagahapelessa, the average relative humidity in November is 82%.

Rainfall

In Dematagahapelessa, during November, the rain falls for 23.9 days and regularly aggregates up to 201mm (7.91") of precipitation. In Dematagahapelessa, during the entire year, the rain falls for 217.7 days and collects up to 1165mm (45.87") of precipitation.

Daylight

In Dematagahapelessa, the average length of the day in November is 11h and 47min.
On the first day of the month, sunrise is at 05:56 and sunset at 17:47. On the last day of November, sunrise is at 06:05 and sunset at 17:49 +0530.

Sunshine

In November, the average sunshine is 6.7h.

UV index

January, February, October through December, 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 unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 6 during November leads to these instructions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.