November weather forecast
Gampaha, Sri Lanka

November in Gampaha marks a significant shift in weather patterns. The city experiences reduced rainfall down to 174mm (6.85"), indicating a break from the heavy monsoons. Increased sunshine and daylight hours connote the onset of a drier season. The wind speed takes a nosedive, matching the changing weather conditions. November nudges Gampaha towards the end of the year, bringing a significant change in weather that is welcomed by the residents of the city.

Temperature

Gampaha in November witnesses an average high-temperature of a tropical 30.2°C (86.4°F), indicating a slight variation from October's 29.9°C (85.8°F). During November, the temperature tends to dip to an average of 24.5°C (76.1°F) at night.

Heat index

The heat index for November is appraised at a fiery hot 38°C (100.4°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Heat index determinations are made taking into account the shade and light air movements. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
The primary way humans combat excessive warmth is by perspiring, letting sweat evaporate and cool the body. When there is abundant moisture in the air, the body's cooling through the evaporation process becomes less effective, leading to the sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Gampaha, the average relative humidity in November is 79%.

Rainfall

In Gampaha, Sri Lanka, in November, during 23.3 rainfall days, 174mm (6.85") of precipitation is typically accumulated. Throughout the year, there are 265.4 rainfall days, and 1744mm (68.66") of precipitation is accumulated.

Daylight

In November, the average length of the day in Gampaha is 11h and 48min.
On the first day of November, sunrise is at 05:57 and sunset at 17:49. On the last day of the month, sunrise is at 06:06 and sunset at 17:51 +0530.

Sunshine

November has the least sunshine of the year in Gampaha, with an average of 6.6h of sunshine.

UV index

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 7 in November translates into this advice:
Deter overexposure. Protecting against the sun's effects is essential. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.