December weather forecast
Renggam, Malaysia

The first month of the winter, December, is still a hot month in Renggam, Malaysia, with an average temperature ranging between min 22.9°C (73.2°F) and max 30°C (86°F).

Temperature

In Renggam, Malaysia, the month of December is known for its lowest average temperatures, reaching a high of 30°C (86°F) and a low of 22.9°C (73.2°F).

Heat index

In December, the heat index is estimated at a blistering 40°C (104°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

With an average relative humidity of 87%, December is the most humid month.

Rainfall

In Renggam, in December, it is raining for 23.3 days, with typically 113mm (4.45") of accumulated precipitation. In Renggam, during the entire year, the rain falls for 277.1 days and collects up to 1113mm (43.82") of precipitation.

Daylight

With an average of 12h and 0min of daylight, December has the shortest days of the year.
On the first day of December in Renggam, Malaysia, sunrise is at 6:54 am and sunset at 6:56 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 7:09 pm +08.

Sunshine

The month with the least sunshine in Renggam is December, with an average of 6h of sunshine.

UV index

The months with the lowest UV index in Renggam, Malaysia, are January and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in December interprets into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.