January weather forecast
Matara, Sri Lanka

The commencement of the year in Matara, Sri Lanka sees a relative increase in rainfall, from 22mm (0.87") in the last month of the previous year to 30mm (1.18") in January. The city experiences a good balance between rainfall and sunshine, providing a welcoming climate for sightseeing. The slight increase in sea temperatures contributes to a warm and humid environment, perfect for beach-goers. Pressure systems remain relatively stable, and the wind speeds are moderate, offering ideal sailing conditions. The morning fog gradually gives way to clear skies as the humidity dissipates, creating a picturesque setting over the city.

Temperature

In January, Matara experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 29.9°C (85.8°F) in December to a tropical 30.2°C (86.4°F). Matara reports a consistent average low-temperature of 23°C (73.4°F) throughout January nights.

Heat index

For most parts of January, the heat index is estimated at a very hot 37°C (98.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. 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.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

January and February, with an average relative humidity of 77%, are the least humid months.

Rainfall

The month with the least rainfall is January, when the rain falls for 12.3 days and typically collects 22mm (0.87") of precipitation.

Sea temperature

The month with the coldest seawater is January, with an average sea temperature of 27.7°C (81.9°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

In January, the average length of the day is 11h and 49min.
On the first day of January in Matara, sunrise is at 06:17 and sunset at 18:04. On the last day of the month, sunrise is at 06:25 and sunset at 18:17 +0530.

Sunshine

In Matara, Sri Lanka, the average sunshine in January is 8.9h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 7 during January translates into the following directions:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be mindful! Sand and water reflections can up the Sun's UV exposure.