December weather forecast
Kuching, Malaysia

The final month of the year, December, is the wettest month for Kuching averaging 165mm (6.5") of rainfall. Alongside it, the city shielded under a dense cloud cover is a common sight throughout the month. The weather oscillates between being moderately warm to cool, with a calming sea temperature adding to the overall serene ambience. This drop in overall temperature and increased precipitation is a marked deviation from the hot conditions that prevail through most of the year. Despite the heavier rainfall, December prepares the setup for a more stable and dryer climate in the subsequent month, January.

Temperature

The onset of December in Kuching marks an average high-temperature of a still hot 30.4°C (86.7°F), hardly differing from November's 31.4°C (88.5°F). The average temperature in Kuching during December nights dips to a warm 23.3°C (73.9°F).

Heat index

The average heat index in December is estimated at a blisteringly hot 41°C (105.8°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', evaluates the perceived heat by adding the effect of moisture in the air. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

The average relative humidity in December in Kuching is 86%.

Rainfall

In Kuching, Malaysia, in December, it is raining for 22.5 days, with typically 165mm (6.5") of accumulated precipitation. Throughout the year, in Kuching, there are 233.4 rainfall days, and 1233mm (48.54") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 29°C (84.2°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.

Daylight

The month with the shortest days in Kuching is December, with an average of 12h and 0min of daylight.
On the first day of the month, sunrise is at 6:26 am and sunset at 6:28 pm. On the last day of December, sunrise is at 6:40 am and sunset at 6:42 pm +08.

Sunshine

In December, the average sunshine in Kuching is 6.7h.

UV index

February through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 in December translates into these instructions:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Caution! The Sun's UV intensity grows with reflections off sand and water.