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
January is the coldest month, with the temperature often reaching an average high of 29.8°C (85.6°F) and an average low of 24.3°C (75.7°F).Heat index
In January, the average heat index is appraised at a torrid 37°C (98.6°F). Exercise enhanced safety steps, heat cramps and heat exhaustion are probable. Heatstroke could be a result of sustained activity.Heat index determinations are made taking into account the shade and light air movements. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.
Humidity
In Cilegon, the average relative humidity in January is 78%.Rainfall
In January, the rain falls for 29.4 days. Throughout January, 165mm (6.5") of precipitation is accumulated. In Cilegon, during the entire year, the rain falls for 292.5 days and collects up to 1468mm (57.8") of precipitation.Daylight
In Cilegon, the average length of the day in January is 12h and 26min.On the first day of the month, sunrise is at 05:45 and sunset at 18:13. On the last day of January, sunrise is at 05:58 and sunset at 18:20 WIB.
Sunshine
The average sunshine in January is 9h.UV index
January is the month with the lowest UV index, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 6 in January, converts into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How hot is 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?
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?
What is the UV index reading in January?
Average temperature in January
Cilegon, Indonesia
- Average high temperature in January: 29.8°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 (29.8°C).
- Average low temperature in January: 24.3°C
The month with the highest average low temperature is May (24.8°C).
The coldest month (with the lowest average low temperature) is August (23.1°C).
Average pressure in January
Cilegon, Indonesia
- Average pressure in January: 1009.7mbar
The month with the highest atmospheric pressure is September (1011.1mbar).
The month with the lowest atmospheric pressure is December (1009.3mbar).
Average wind speed in January
Cilegon, Indonesia
- Average wind speed in January: 9.4km/h
The windiest month (with the highest average wind speed) is January (9.4km/h).
The calmest month (with the lowest average wind speed) is August (5km/h).
Average humidity in January
Cilegon, Indonesia
- Average humidity in January: 78%
The months with the highest relative humidity are February and March (80%).
The months with the lowest relative humidity are September and October (71%).
Average rainfall in January
Cilegon, Indonesia
- Average rainfall in January: 165mm
The wettest month (with the highest rainfall) is March (189mm).
The driest month (with the least rainfall) is August (45mm).
Average rainfall days in January
Cilegon, Indonesia
- Average rainfall days in January: 29.4 days
The month with the highest number of rainy days is January (29.4 days).
The month with the least rainy days is August (14.3 days).
Average daylight in January /
Average sunshine in January
Cilegon, Indonesia
- Average daylight in January: 12h and 2min
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 48min).
- Average sunshine in January: 9h and 0min
The month with the most sunshine is December (Average sunshine: 9h and 12min).
The months with the least sunshine are June and July (Average sunshine: 7h and 0min).
Average sunshine days in January
Cilegon, Indonesia
- Average sunshine days in January: 0.8 days
The month with the most sunshine days is August (14 days).
The month with the least sunshine days is February (0.7 days).
Average UV index in January
Cilegon, 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
Cilegon, Indonesia
- Average cloud cover in January: 48
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in January
Cilegon, Indonesia
- Average visibility in January: 9km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
