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
January
Weather in January
Temperature
The coldest period tends to be January, when average temperatures fluctuate between a high of 30.3°C (86.5°F) and a low of 24.3°C (75.7°F).Heat index
In January, the heat index is calculated to be a very hot 38°C (100.4°F). Additional precautions are required to avert heat cramps and heat exhaustion. Persistent activity may culminate in heatstroke.Records show heat index calculations are tailored for shaded regions and mild winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.
Humidity
In January, the average relative humidity is 79%.Rainfall
In Siak Sri Indrapura, during January, the rain falls for 18.3 days and regularly aggregates up to 59mm (2.32") of precipitation. Throughout the year, there are 262.5 rainfall days, and 853mm (33.58") of precipitation is accumulated.Daylight
The average length of the day in January is 12h and 5min.On the first day of the month, sunrise is at 06:12 and sunset at 18:17. On the last day of January, sunrise is at 06:22 and sunset at 18:27 WIB.
Sunshine
The average sunshine in January is 7.6h.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 of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.Note: The UV index of 7 during January translates into the following guidance:
Shield from overexposure. Defense against sun-related harm is required. 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. Always opt for UVA and UVB-resistant sunglasses on radiant days.
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?
How much does it rain in January?
What is the average length of the day in January?
When is the sunrise / sunset in January?
How long on average sun shines in January?
What are the months with the highest UV index?
What are the months with the lowest UV index?
What is the UV index reading in January?
Average temperature in January
Siak Sri Indrapura, Indonesia
- Average high temperature in January: 30.3°C
The warmest month (with the highest average high temperature) is May (32.8°C).
The month with the lowest average high temperature is January (30.3°C).
- Average low temperature in January: 24.3°C
The months with the highest average low temperature are April and May (25.2°C).
The coldest month (with the lowest average low temperature) is January (24.3°C).
Average pressure in January
Siak Sri Indrapura, Indonesia
- Average pressure in January: 1010.1mbar
The month with the highest atmospheric pressure is February (1010.2mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed in January
Siak Sri Indrapura, Indonesia
- Average wind speed in January: 7.6km/h
The windiest month (with the highest average wind speed) is January (7.6km/h).
The calmest month (with the lowest average wind speed) is April (5.1km/h).
Average humidity in January
Siak Sri Indrapura, Indonesia
- Average humidity in January: 79%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (76%).
Average rainfall in January
Siak Sri Indrapura, Indonesia
- Average rainfall in January: 59mm
The wettest month (with the highest rainfall) is November (100mm).
The driest month (with the least rainfall) is February (37mm).
Average rainfall days in January
Siak Sri Indrapura, Indonesia
- Average rainfall days in January: 18.3 days
The month with the highest number of rainy days is May (25.1 days).
The month with the least rainy days is February (15.3 days).
Average daylight in January /
Average sunshine in January
Siak Sri Indrapura, Indonesia
- Average daylight in January: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 6min).
- Average sunshine in January: 7h and 4min
The month with the most sunshine is September (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 7h and 6min).
Average sunshine days in January
Siak Sri Indrapura, Indonesia
- Average sunshine days in January: 9 days
The month with the most sunshine days is January (9 days).
The month with the least sunshine days is September (2.7 days).
Average UV index in January
Siak Sri Indrapura, Indonesia
- Average UV index in January: 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 January
Siak Sri Indrapura, Indonesia
- Average cloud cover in January: 47
The months with the most cloud cover are November and December (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 38).
Average visibility in January
Siak Sri Indrapura, Indonesia
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, June, August, September and October (10km).
The months with the lowest visibility are April, May, July, November and December (9km).
