Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
Temperature records mark January as the coldest month, with highs averaging 29.1°C (84.4°F) and lows at 24.8°C (76.6°F).Heat index
January's average heat index is computed to be a fiery hot 35°C (95°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles are regularly less conscious of the need to recuperate and rehydrate. Thirst is a tardy symptom of dehydration - hydration, especially during lengthy physical activities, should be maintained.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
The average relative humidity in January is 78%.Rainfall
The month with the most rainfall is January, when the rain falls for 21 days and typically aggregates up to 159mm (6.26") of precipitation.Daylight
The average length of the day in January is 12h and 23min.On the first day of January, sunrise is at 05:52 and sunset at 18:17. On the last day of the month, sunrise is at 06:05 and sunset at 18:25 WITA.
Sunshine
In Mandai, the average sunshine in January is 8.4h.UV index
With an average maximum UV index of 6, January is the month with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 6 in January transforms into this advice:
Implement preventive steps and embrace sun safety standards. Protection from skin and eye distress is compulsory. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How hot does it get in January?
What is the average humidity in January?
What is the rainiest month?
How much does it rain in January?
What is the average length of the day in January in Mandai?
What time are sunrise and sunset in January?
How long on average sun shines in January?
What is the month with the lowest UV index?
How high is the UV index in January?
Average temperature in January
Mandai, Indonesia
- Average high temperature in January: 29.1°C
The warmest month (with the highest average high temperature) is October (32.2°C).
The month with the lowest average high temperature is January (29.1°C).
- Average low temperature in January: 24.8°C
The month with the highest average low temperature is November (25.5°C).
The coldest month (with the lowest average low temperature) is August (23°C).
Average pressure in January
Mandai, Indonesia
- Average pressure in January: 1008.8mbar
The month with the highest atmospheric pressure is August (1010.8mbar).
The month with the lowest atmospheric pressure is December (1008.3mbar).
Average wind speed in January
Mandai, Indonesia
- Average wind speed in January: 8.7km/h
The windiest month (with the highest average wind speed) is January (8.7km/h).
The calmest month (with the lowest average wind speed) is May (6.1km/h).
Average humidity in January
Mandai, Indonesia
- Average humidity in January: 78%
The months with the highest relative humidity are April and May (79%).
The month with the lowest relative humidity is October (66%).
Average rainfall in January
Mandai, Indonesia
- Average rainfall in January: 159mm
The wettest month (with the highest rainfall) is January (159mm).
The driest month (with the least rainfall) is September (10mm).
Average rainfall days in January
Mandai, Indonesia
- Average rainfall days in January: 21 days
The month with the highest number of rainy days is March (23.8 days).
The month with the least rainy days is August (4.9 days).
Average daylight in January /
Average sunshine in January
Mandai, Indonesia
- Average daylight in January: 12h and 2min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 48min).
- Average sunshine in January: 8h and 2min
The month with the most sunshine is December (Average sunshine: 10h and 12min).
The month with the least sunshine is May (Average sunshine: 6h and 48min).
Average sunshine days in January
Mandai, Indonesia
- Average sunshine days in January: 8.3 days
The month with the most sunshine days is August (25.1 days).
The month with the least sunshine days is March (4.1 days).
Average UV index in January
Mandai, Indonesia
- Average UV index in January: 6
The months with the highest UV index are February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The month with the lowest UV index is January (UV index 6).
Average cloud cover in January
Mandai, Indonesia
- Average cloud cover in January: 45
The month with the most cloud cover is January (Cloud cover 45).
The months with the least cloud cover are August and September (Cloud cover 16).
Average visibility in January
Mandai, Indonesia
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Mandai, Indonesia
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