January weather forecast
Pemalang, Indonesia

January, like December, in Pemalang, Indonesia, is another warm summer month, with temperature in the range of an average low of 25.1°C (77.2°F) and an average high of 29.5°C (85.1°F).

Temperature

Pemalang experiences an average high-temperature of a moderately hot 29.5°C (85.1°F) in January, subtly different from December's 30.4°C (86.7°F). Pemalang logs an average low-temperature of 25.1°C (77.2°F) during the nights of January, subtly lower than its daytime highs.

Heat index

During January, the heat index is computed to be a sweltering 35°C (95°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Records show heat index calculations are tailored for shaded regions and mild winds. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', reflects the blend of air temperature and relative humidity to give a temperature impression. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. 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 largely significant for babies and toddlers. 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.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In January, the average relative humidity in Pemalang is 77%.

Rainfall

January is the month with the most rainfall in Pemalang. Rain falls for 26.8 days and accumulates 167mm (6.57") of precipitation.

Sea temperature

In January, the average sea temperature is 28.9°C (84°F).
Note: Water activities in temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are pleasurable, without feeling uncomfortable even during extended periods.

Daylight

In Pemalang, Indonesia, the average length of the day in January is 12h and 28min.
On the first day of January, sunrise is at 05:30 and sunset at 18:01. On the last day of the month, sunrise is at 05:43 and sunset at 18:08 WIB.

Sunshine

The average sunshine in January is 9.2h.

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 value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index of 7 during January leads to these instructions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Note! The Sun's UV radiation gets intensified with the reflection from sand and water.