January weather forecast
Medan, Indonesia

January's climate in Medan, Indonesia is defined by optimal air pressure, reaching an average of 1010.9 mb. With the sun shining for an estimated 8.3 hours per day, locals and visitors alike bask in the city's warm ambiance. Occasional rain showers offer cooling relief, contributing to the relatively high humidity. Indulge in outdoor activities early in the day as the temperatures are agreeably warm. As the day progresses, expect temperatures to rise, setting the stage for a mildly hot afternoon.

Temperature

During January and December, Medan registers its lowest temperatures, averaging a high of 30.8°C (87.4°F).

Heat index

The heat index value during January is computed to be a blisteringly hot 40°C (104°F). Take greater precautions, heat exhaustion and heat cramps may be expected. Heatstroke could result from lengthy activity.
Always consider that heat index estimations are for light winds and places in the shade. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', takes into account both air temperature and humidity to illustrate what people actually feel. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. 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.
Perspiration and the resultant sweat evaporation are the body's natural thermostat, helping regulate temperature. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Medan, the average relative humidity in January is 80%.

Rainfall

In Medan, in January, it is raining for 25.2 days, with typically 74mm (2.91") of accumulated precipitation. Throughout the year, there are 298 rainfall days, and 1172mm (46.14") of precipitation is accumulated.

Daylight

In Medan, the average length of the day in January is 11h and 56min.
On the first day of January, sunrise is at 06:30 and sunset at 18:26. On the last day of the month, sunrise is at 06:39 and sunset at 18:37 WIB.

Sunshine

In Medan, Indonesia, the average sunshine in January is 8.3h.

UV index

The months with the highest UV index in Medan 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 estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 7 in January interprets into the following advice:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Experience reduced UV exposure by about half when donning a wide-brim hat.