November weather forecast
Jaffna, Sri Lanka

November brings along a continuation of the wet season, a hallmark of Jaffna's annual weather cycle. Exceptionally high rainfall, close to October’s record, signifies the ongoing intensity of the monsoon. The shift towards the year-end also ushers in shorter daylight hours while the long-standing humidity persists. Notwithstanding these transitions, swimmers get to indulge in warm sea temperatures that show little fluctuation.

Temperature

The arrival of November sees an average high-temperature of a still moderately hot 28.4°C (83.1°F), hardly diverging from October's 29.2°C (84.6°F). Throughout November, Jaffna observes a steady low-temperature average of 26.9°C (80.4°F), reflecting a minor dip from daytime highs.

Heat index

For most parts of November, the heat index is calculated to be a tropical 33°C (91.4°F). Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
Data suggests that the heat index is set for environments in shade and with a light wind. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', provides an understanding of perceived warmth by combining temperature and relative humidity. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. It is essential to be conscious of the fact that direct sunlight can intensify the felt heat, leading to an elevation in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children frequently do not understand the need for recuperation and hydration. Thirst, being a late manifestation of dehydration, underlines the need to hydrate frequently, especially when engaging in prolonged physical exercises.

Humidity

In November, the average relative humidity is 77%.

Rainfall

In Jaffna, Sri Lanka, during November, the rain falls for 22.2 days and regularly aggregates up to 183mm (7.2") of precipitation. In Jaffna, Sri Lanka, during the entire year, the rain falls for 148.6 days and collects up to 769mm (30.28") of precipitation.

Sea temperature

In November, the average sea temperature in Jaffna is 28.4°C (83.1°F).
Note: For water activities like swimming, diving, and more, temperatures ranging between 25°C (77°F) and 29°C (84.2°F) offer superior comfort and enjoyment for lengthy durations.

Daylight

In Jaffna, the average length of the day in November is 11h and 41min.
On the first day of the month, sunrise is at 06:00 and sunset at 17:46. On the last day of November, sunrise is at 06:10 and sunset at 17:46 +0530.

Sunshine

The average sunshine in November in Jaffna is 5.9h.

UV index

The month with the lowest UV index in Jaffna, Sri Lanka, is November, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 6 during November translates into the following guidance:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.