December weather forecast
Pattiya, Sri Lanka

The first month of the winter, December, is still a warm month in Pattiya, Sri Lanka, with temperature in the range of an average low of 24.4°C (75.9°F) and an average high of 29.7°C (85.5°F).

Temperature

The average high-temperature in December, at a still moderately hot 29.7°C (85.5°F), reveals a modest deviation from November's 29.8°C (85.6°F). During December, the average low-temperature in Pattiya, Sri Lanka, is a still moderately hot 24.4°C (75.9°F).

Heat index

During December, the heat index is computed to be a very hot 36°C (96.8°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', integrates the air's temperature and its humidity to showcase the felt temperature by people. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. When the air contains significant moisture, the efficiency of the evaporation process decreases, preventing the body from cooling down effectively and creating a feeling of overheating. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

In December, the average relative humidity is 79%.

Rainfall

In Pattiya, during December, the rain falls for 16.5 days and regularly aggregates up to 93mm (3.66") of precipitation. Throughout the year, in Pattiya, there are 273.8 rainfall days, and 2059mm (81.06") of precipitation is accumulated.

Daylight

With an average of 11h and 42min of daylight, December has the shortest days of the year in Pattiya.
On the first day of the month, sunrise is at 06:06 and sunset at 17:52. On the last day of December, sunrise is at 06:21 and sunset at 18:05 +0530.

Sunshine

The average sunshine in December in Pattiya is 7.1h.

UV index

January through April, July, September through December, with an average maximum UV index of 7, are months with the highest UV index in Pattiya. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 7 in December transforms into this advice:
Sustain precautions and conform to sun safety norms. Preventing sunburn is necessary. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.