January weather forecast
Pattiya, Sri Lanka

January is a hot winter month in Pattiya, Sri Lanka, with temperature in the range of an average high of 30.3°C (86.5°F) and an average low of 23.4°C (74.1°F).

Temperature

Pattiya, Sri Lanka, starts January with an average high-temperature of a hot 30.3°C (86.5°F), hinting at a minimal fluctuation from December. During January, Pattiya records a consistent average nighttime temperature of 23.4°C (74.1°F).

Heat index

The heat index for January is computed to be a sweltering 37°C (98.6°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children usually face more risks than adults as their ability to sweat is less. Additionally, their larger skin surface in relation to their petite bodies and higher heat output due to their activities increases their vulnerability.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Heat-related disorders may develop if heat gain in the body overshadows its cooling capacity, leading to elevated temperatures.

Humidity

January and February, with an average relative humidity of 75%, are the least humid months.

Rainfall

January is the month with the least rainfall. Rain falls for 8.9 days and accumulates 25mm (0.98") of precipitation.

Daylight

The average length of the day in January is 11h and 47min.
On the first day of January, sunrise is at 06:21 and sunset at 18:05. On the last day of the month, sunrise is at 06:28 and sunset at 18:18 +0530.

Sunshine

January has the most sunshine of the year in Pattiya, with an average of 9.2h of sunshine.

UV index

The months with the highest UV index in Pattiya are January through April, July, September through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 7 in January translates into the following instructions:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.