December weather forecastJohol, Malaysia
December
Weather in December
December, the first month of the winter in Johol, is still a tropical month, with an average temperature ranging between min 23.4°C (74.1°F) and max 30.5°C (86.9°F).Temperature
With average high temperatures of 30.5°C (86.9°F) and lows of 23.4°C (74.1°F), December is the coldest month.Heat index
December's average heat index is estimated at a blisteringly hot 40°C (104°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a metric representing the sensation of warmth when air temperature and moisture come together. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Evaporation of sweat is the main factor behind the cooling effect of perspiration in the human body. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. As body temperatures escalate without effective heat release, one might face dehydration threats.
Humidity
The most humid month is December, with an average relative humidity of 83%.Rainfall
In December, the rain falls for 26.9 days. Throughout December, 125mm (4.92") of precipitation is accumulated. In Johol, during the entire year, the rain falls for 271.9 days and collects up to 1017mm (40.04") 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, sunrise is at 7:00 am and sunset at 6:59 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 7:13 pm +08.
Sunshine
December has the least sunshine of the year, with an average of 7.2h of sunshine.UV index
The months with the highest UV index 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 estimate of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 7 during December morphs into the following directions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Johol, Malaysia
- Average high temperature in December: 30.5°C
The warmest months (with the highest average high temperature) are March, May and October (32.3°C).
The month with the lowest average high temperature is December (30.5°C).
- Average low temperature in December: 23.4°C
The month with the highest average low temperature is May (24.4°C).
The coldest months (with the lowest average low temperature) are January and February (22.9°C).
Average pressure in December
Johol, Malaysia
- Average pressure in December: 1009.5mbar
The months with the highest atmospheric pressure are January and February (1010.3mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed in December
Johol, Malaysia
- Average wind speed in December: 5.7km/h
The windiest month (with the highest average wind speed) is February (6.8km/h).
The calmest month (with the lowest average wind speed) is May (4.6km/h).
Average humidity in December
Johol, Malaysia
- Average humidity in December: 83%
The month with the highest relative humidity is December (83%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall in December
Johol, Malaysia
- Average rainfall in December: 125mm
The wettest month (with the highest rainfall) is November (132mm).
The driest month (with the least rainfall) is September (44mm).
Average rainfall days in December
Johol, Malaysia
- Average rainfall days in December: 26.9 days
The month with the highest number of rainy days is December (26.9 days).
The months with the least rainy days are July and September (19.9 days).
Average daylight in December /
Average sunshine in December
Johol, Malaysia
- Average daylight in December: 12h and 0min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in December: 7h and 12min
The month with the most sunshine is September (Average sunshine: 8h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 12min).
Average sunshine days in December
Johol, Malaysia
- Average sunshine days in December: 2.4 days
The month with the most sunshine days is October (8.5 days).
The month with the least sunshine days is December (2.4 days).
Average UV index in December
Johol, Malaysia
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in December
Johol, Malaysia
- Average cloud cover in December: 50
The months with the most cloud cover are November and December (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Johol, Malaysia
- Average visibility in December: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
