January weather forecastCilacap, Indonesia

Weather in January

January weather in Cilacap, Indonesia sets the pace for the rest of the year. The city experiences warm weather with humidity levels peaking as high as 79%. During this month, the city gets to experience rainfall amounting to 150mm (5.91") on average. This heavy rainfall could account for fewer sunlight hours and less visibility than in the following months. Despite these challenges, the atmospheric pressure remains stable, making January an interesting kickoff to Cilacap's weather year.

Temperature

Cilacap marks the start of January with an average high-temperature of a still moderately hot 29.2°C (84.6°F), hinting at a slight fluctuation from December's 28.9°C (84°F). Registering an almost steady temperature, Cilacap's nights in January see an average low of 25.4°C (77.7°F).

Heat index

For January, the heat index is evaluated at a sweltering 35°C (95°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', measures the perceived warmth when incorporating the humidity present in the air. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. 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 are primarily vital for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

January, March and December, with an average relative humidity of 79%, are the least humid months in Cilacap.

Rainfall

In Cilacap, in January, during 25.6 rainfall days, 150mm (5.91") of precipitation is typically accumulated. In Cilacap, during the entire year, the rain falls for 280.3 days and collects up to 1371mm (53.98") of precipitation.

Daylight

The average length of the day in January is 12h and 31min.
On the first day of the month, sunrise is at 05:30 and sunset at 18:04. On the last day of January, sunrise is at 05:43 and sunset at 18:10 WIB.

Sunshine

In Cilacap, the average sunshine in January is 9.5h.

UV index

January through June, October through December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, the maximum UV index of 7 suggests these recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.