January weather forecastMerdeka, Indonesia

January

Weather in January

January, like December, is a hot winter month in Merdeka, Indonesia, with an average temperature fluctuating between 30.8°C (87.4°F) and 23°C (73.4°F).

Temperature

Merdeka's coldest season falls during January and December, averaging a high-temperature of 30.8°C (87.4°F).

Heat index

Throughout January, the heat index is computed to be an extremely hot 40°C (104°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
It is essential to grasp that the heat index's numbers are for shade and light wind settings. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Should the body fail to balance its heat gain, the escalating temperature poses health challenges.

Humidity

In January, the average relative humidity is 80%.

Rainfall

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

Daylight

In Merdeka, Indonesia, the average length of the day in January is 11h and 58min.
On the first day of the month, sunrise is at 06:30 and sunset at 18:27. On the last day of January, sunrise is at 06:39 and sunset at 18:38 WIB.

Sunshine

In January, the average sunshine is 8.3h.

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 risk from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum high daily UV index of 7 during January translates into the following directions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.

Updated: Aug 4, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Merdeka experiences lowest temperatures, averaging a high-temperature of 30.8°C (87.4°F) during January and December.

In Merdeka, 30.8°C (87.4°F) is the average high-temperature and 23°C (73.4°F) is the average low-temperature during January. In January, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines relative humidity and air temperature, is computed to be 40°C (104°F).

The average relative humidity in January is 80%.

In Merdeka, in January, during 25.2 rainfall days, 74mm (2.91") of precipitation is typically accumulated.

The average day length in January is 11h and 58min.

On the first day of January, sunrise is at 06:30 and sunset at 18:27. On the last day of the month, sunrise is at 06:39 and sunset at 18:38 WIB.

In January, the average sunshine duration is 8.3h.

January through December, with an average maximum UV index of 7, are months with the highest UV index.

January through December, with an average maximum UV index of 7, are months with the lowest UV index.

In January, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

30.8°C

31.7°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.9km/h

6.2km/h

6.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average daylight

Average sunshine

Average sunshine days

2.3

3.8

6.3

Average UV index

Average cloud cover

Average visibility

Average temperature in January
Merdeka, Indonesia

Average high temperature in January: 30.8°C

The warmest month (with the highest average high temperature) is June (33.5°C).
The months with the lowest average high temperature are January and December (30.8°C).

Average low temperature in January: 23°C

The month with the highest average low temperature is May (24.3°C).
The coldest month (with the lowest average low temperature) is January (23°C).

Average pressure in January
Merdeka, Indonesia

Average pressure in January: 1010.9mbar

The month with the highest atmospheric pressure is January (1010.9mbar).
The month with the lowest atmospheric pressure is May (1009.6mbar).

Average wind speed in January
Merdeka, Indonesia

Average wind speed in January: 5.5km/h

The windiest month (with the highest average wind speed) is February (5.6km/h).
The calmest months (with the lowest average wind speed) are September and October (4.8km/h).

Average humidity in January
Merdeka, Indonesia

Average humidity in January: 80%

The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are March and June (75%).

Average rainfall in January
Merdeka, Indonesia

Average rainfall in January: 74mm

The wettest month (with the highest rainfall) is October (154mm).
The driest month (with the least rainfall) is February (60mm).

Average rainfall days in January
Merdeka, Indonesia

Average rainfall days in January: 25.2 days

The month with the highest number of rainy days is October (28.3 days).
The month with the least rainy days is February (18.8 days).

Average daylight in January /
Average sunshine in January
Merdeka, Indonesia

Average daylight in January: 12h and 0min

The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 11h and 54min).

Average sunshine in January: 8h and 18min

The month with the most sunshine is June (Average sunshine: 9h and 12min).
The month with the least sunshine is November (Average sunshine: 8h and 0min).

Average sunshine days in January
Merdeka, Indonesia

Average sunshine days in January: 3.8 days

The months with the most sunshine days are February and March (6.3 days).
The month with the least sunshine days is November (1 days).

Average UV index in January
Merdeka, Indonesia

Average UV index in January: 7

The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).

Average cloud cover in January
Merdeka, Indonesia

Average cloud cover in January: 39

The month with the most cloud cover is November (Cloud cover 45).
The month with the least cloud cover is March (Cloud cover 30).

Average visibility in January
Merdeka, Indonesia

Average visibility in January: 9km

The months with the highest visibility are February, March, April, June and August (10km).
The months with the lowest visibility are January, May, July, September, October, November and December (9km).