December weather forecast
Prachuap Khiri Khan, Thailand

December ends the year in Prachuap Khiri Khan with the least rainfall volume at 15mm (0.59"), falling over a span of merely three days. It marks the beginning of a distinctly dry period, different from the wet months that just passed. Additionally, with relative humidity dropping to the lowest point of 70%, the climate becomes notably less humid. While temperatures decrease significantly, especially in the low temperatures down to 21.2°C (70.2°F), the lower humidity leads December into a refreshing conclusion. Chilly mornings and nights, and warm afternoons make December's weather ideal for outdoor activities and sightseeing.

Temperature

December is the coldest month, with an average high-temperature of 30.4°C (86.7°F) and an average low-temperature of 21.2°C (70.2°F).

Heat index

During December, the heat index is computed to be a sweltering 36°C (96.8°F). Ensure additional precautions, heat exhaustion and heat cramps may be expected. Heatstroke could occur from sustained activity.
Realize that the values for the heat index are set for shaded places and light winds. The direct sunshine could escalate the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines both the air temperature and the humidity level to give a perceived human temperature. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

With an average relative humidity of 70%, December is the least humid month.

Rainfall

The month with the least rainfall is December, when the rain falls for 3 days and typically collects 15mm (0.59") of precipitation.

Daylight

With an average of 11h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:25 and sunset at 17:54. On the last day of December, in Prachuap Khiri Khan, sunrise is at 06:40 and sunset at 18:07 +07.