December weather forecast
Batu Berendam, Malaysia

Batu Berendam in December wraps up the year with weather somewhat similar to November. Rainfall still remains high, although slightly less than November, measuring about 133mm (5.24"), influencing the number of rainy days, approximately 28 days. Humidity increases further to 81%, making it one of the most humid months of the year. Contrary to the increment in humidity, sunshine hours decline to 7.7 hours daily, and daylight likewise reduces to 12 hours. Despite these changes, wind speeds up to 9.3km/h (5.8mph) and pressure levels of 1009.4mb adhere to the year's weather pattern.

Temperature

The arrival of December sees a recorded average high-temperature of a still hot 30.1°C (86.2°F), showing little divergence from the previous month's conditions. Throughout December, Batu Berendam's nights cool down to an average of 24.5°C (76.1°F).

Heat index

During December, the heat index is calculated to be a sweltering 38°C (100.4°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Be aware that heat index ratings are designed for shaded locations and minor breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. 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.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

With an average relative humidity of 81%, December is the most humid month.

Rainfall

In Batu Berendam, during December, the rain falls for 28.5 days and regularly aggregates up to 133mm (5.24") of precipitation. Throughout the year, there are 299.5 rainfall days, and 1046mm (41.18") of precipitation is accumulated.

Daylight

The month with the shortest days in Batu Berendam is December, with an average of 12h and 0min of daylight.
On the first day of December, sunrise is at 7:00 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:13 pm +08.

Sunshine

With an average of 7.7h of sunshine, December has the least sunshine of the year.

UV index

The months with the highest UV index in Batu Berendam are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 7 in December translates into this advice:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.