January weather forecast
Kalmunai, Sri Lanka

The onset of the year in Kalmunai, Sri Lanka is marked by predominantly humid weather. Differences in temperature remain minimally from 24°C (75.2°F) to 27.3°C (81.1°F), instigating moderate warmth across the region. The city experiences a relative humidity of 80% providing a slightly balmy ambience. Rainfall marks its presence with a generous 120mm (4.72") spread over about 18.7 days of the month. Hence, explorers are advised to keep their raincoats handy, as January showers are quite a common sight.

Temperature

With average temperatures fluctuating between a high of 27.3°C (81.1°F) and a low of 24°C (75.2°F), January stands out as the coldest month in Kalmunai.

Heat index

The heat index value for January is estimated at a hot 30°C (86°F). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Remember that heat index calculations are made for conditions in the shade with light wind. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. When exposed to direct sunlight, it's possible for the heat index to increase by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

In Kalmunai, Sri Lanka, the average relative humidity in January is 80%.

Rainfall

In January, in Kalmunai, Sri Lanka, the rain falls for 18.7 days. Throughout January, 120mm (4.72") of precipitation is accumulated. Throughout the year, in Kalmunai, Sri Lanka, there are 237.8 rainfall days, and 1259mm (49.57") of precipitation is accumulated.

Sea temperature

January is the month with the coldest seawater in Kalmunai, with an average sea temperature of 27.3°C (81.1°F).
Note: With water temperature from 25°C (77°F) to 29°C (84.2°F), all water activities are comfortable and delightful, devoid of discomfort even for lengthened periods.

Daylight

In Kalmunai, the average length of the day in January is 11h and 45min.
On the first day of January, sunrise is at 06:14 and sunset at 17:56. On the last day of the month, sunrise is at 06:21 and sunset at 18:10 +0530.

Sunshine

In January, the average sunshine is 7.5h.

UV index

January through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A maximum UV index of 7 in January translates into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be attentive! The UV exposure is heightened with reflections from sand and water.