January weather forecast
Rattota, Sri Lanka

January, like December, in Rattota, Sri Lanka, is another warm winter month, with an average temperature varying between 19°C (66.2°F) and 29.3°C (84.7°F).

Temperature

Upon the beginning of January, Rattota's high-temperatures register at a still warm 29.3°C (84.7°F), closely mirroring the preceding month. During January, Rattota experiences an average low-temperature of 19°C (66.2°F) at night.

Heat index

For January, the heat index is computed to be a sweltering 35°C (95°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
The standards for the heat index are set for locations in shade and under light breezes. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is personal, shaped by the individual's physical activity and heat sensitivity, influenced by factors including wind, clothing, and metabolic variances. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
When temperatures rise, the human body turns to perspiration, using the cooling power of evaporating sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In Rattota, the average relative humidity in January is 79%.

Rainfall

In Rattota, in January, it is raining for 14 days, with typically 34mm (1.34") of accumulated precipitation. In Rattota, during the entire year, the rain falls for 217.7 days and collects up to 1165mm (45.87") of precipitation.

Daylight

The average length of the day in January is 11h and 44min.
On the first day of January in Rattota, sunrise is at 06:19 and sunset at 18:01. On the last day of the month, sunrise is at 06:26 and sunset at 18:14 +0530.

Sunshine

In Rattota, the average sunshine in January is 8.4h.

UV index

January, February, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Rattota. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 6 in January converts into the following recommendations:
Apply measures and align with sun safety principles. Safeguarding against skin and eye injury is pivotal. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.