January weather forecast
Serang, Indonesia

In Serang, Indonesia, the start of the year greets locals and travelers alike with a relatively wet climate. The month sees an average of 180mm (7.09") of rain spread over about 29 days, marking January as one of Serang's wetter periods. Visitors will find humidity levels hovering around 76%, which can give the air a noticeably moist quality. With daylight hours going up to 12.4 hours, there is ample time to explore the city, despite frequent rainfall. As we move into the next month, the city sees minor shifts in its climatological patterns.

Temperature

In Serang, January records the lowest average temperatures, peaking at 29.6°C (85.3°F) and reaching a low of 25.6°C (78.1°F).

Heat index

Throughout January, the heat index is evaluated at a torrid 35°C (95°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
Keep in mind the heat index values are meant for areas in shade and with light wind. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.

Humidity

In January, the average relative humidity is 76%.

Rainfall

The wettest months in Serang are January and February, with an average 180mm (7.09") of rainfall.

Daylight

In Serang, the average length of the day in January is 12h and 26min.
On the first day of the month, sunrise is at 05:44 and sunset at 18:12. On the last day of January, sunrise is at 05:57 and sunset at 18:19 WIB.

Sunshine

In January, the average sunshine is 9.1h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Serang. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Serang, Indonesia. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 7 in January converts into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat.