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
The yearly lowest temperatures occur in January, February and July, averaging a high-temperature of 30.1°C (86.2°F).Heat index
In January, the average heat index is estimated at a sweltering 37°C (98.6°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. Being under direct sunlight might amplify the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly critical for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.
Humidity
In Kertajaya, Indonesia, the average relative humidity in January is 78%.Rainfall
In Kertajaya, in January, during 27 rainfall days, 172mm (6.77") of precipitation is typically accumulated. In Kertajaya, during the entire year, the rain falls for 187.8 days and collects up to 839mm (33.03") of precipitation.Daylight
The average length of the day in January is 12h and 29min.On the first day of the month, sunrise is at 05:15 and sunset at 17:48. On the last day of January, sunrise is at 05:29 and sunset at 17:55 WIB.
Sunshine
The month with the least sunshine is January, with an average of 8.1h of sunshine.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index in Kertajaya. The months with the lowest UV index in Kertajaya 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 exposure to the Sun's UV rays for ordinary individuals.Note: In January, a regular UV index of 7 translates into these guidelines:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
What is the coldest month in Kertajaya?
How hot is it in Kertajaya in January?
What is the average humidity in January in Kertajaya?
How much does it rain in Kertajaya in January?
How many hours of daylight does Kertajaya have in January?
When is the sunrise / sunset in January in Kertajaya?
What is the month with the least sunshine in Kertajaya?
How long on average sun shines in January in Kertajaya?
What are the months with the highest UV index in Kertajaya?
What are the months with the lowest UV index in Kertajaya?
What is the UV index reading in January in Kertajaya?
Average temperature in January
Kertajaya, Indonesia
- Average high temperature in January: 30.1°C
The warmest month (with the highest average high temperature) is October (32.9°C).
The months with the lowest average high temperature are January, February and July (30.1°C).
- Average low temperature in January: 25.3°C
The month with the highest average low temperature is November (26.5°C).
The coldest month (with the lowest average low temperature) is August (24.2°C).
Average pressure in January
Kertajaya, Indonesia
- Average pressure in January: 1009mbar
The month with the highest atmospheric pressure is August (1011.4mbar).
The month with the lowest atmospheric pressure is December (1008.7mbar).
Average wind speed in January
Kertajaya, Indonesia
- Average wind speed in January: 9.6km/h
The windiest month (with the highest average wind speed) is August (9.9km/h).
The calmest month (with the lowest average wind speed) is April (6.3km/h).
Average humidity in January
Kertajaya, Indonesia
- Average humidity in January: 78%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is October (63%).
Average rainfall in January
Kertajaya, Indonesia
- Average rainfall in January: 172mm
The wettest month (with the highest rainfall) is February (179mm).
The driest month (with the least rainfall) is August (4mm).
Average rainfall days in January
Kertajaya, Indonesia
- Average rainfall days in January: 27 days
The month with the highest number of rainy days is January (27 days).
The month with the least rainy days is August (3.7 days).
Average daylight in January /
Average sunshine in January
Kertajaya, Indonesia
- Average daylight in January: 12h and 3min
The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).
- Average sunshine in January: 8h and 1min
The months with the most sunshine are August, September and October (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 8h and 6min).
Average sunshine days in January
Kertajaya, Indonesia
- Average sunshine days in January: 3.1 days
The month with the most sunshine days is August (26 days).
The month with the least sunshine days is February (2.8 days).
Average UV index in January
Kertajaya, 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
Kertajaya, Indonesia
- Average cloud cover in January: 44
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in January
Kertajaya, Indonesia
- Average visibility in January: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).
Kertajaya, Indonesia
Weather forecast for your location
2. Allow the app to use your location
