December weather forecast
Batu, Malaysia

December, the first month of the winter in Batu, is still a tropical month, with an average temperature fluctuating between 23.1°C (73.6°F) and 30.8°C (87.4°F).

Temperature

With average temperatures fluctuating between a high of 30.8°C (87.4°F) and a low of 23.1°C (73.6°F), December stands out as the coldest month.

Heat index

For December, the heat index is calculated to be an extremely hot 41°C (105.8°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', measures the perceived warmth when incorporating the humidity present in the air. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Sweat evaporation plays a crucial role in cooling the human body, a process enabled by perspiration. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

With an average relative humidity of 82%, December is the most humid month.

Rainfall

In December, in Batu, the rain falls for 25 days. Throughout December, 139mm (5.47") of precipitation is accumulated. Throughout the year, there are 299.4 rainfall days, and 1297mm (51.06") of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 11h and 54min of daylight.
On the first day of December in Batu, sunrise is at 7:03 am and sunset at 7:00 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 7:14 pm +08.

Sunshine

December has the least sunshine of the year, with an average of 7.3h of sunshine.

UV index

January through October and December, with an average maximum UV index of 7, are months with the highest UV index in Batu. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 7 transforms into the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.