January Weather in Isak, Indonesia

Last updated: August 23, 2025

In January, the average temperature in Isak, Indonesia hovers around 20°C (68°F), creating a pleasant atmosphere for outdoor activities. However, temperatures can vary, with lows dipping to 12°C (54°F) and highs reaching up to 28°C (82°F). Be prepared for some rain, as precipitation typically amounts to 163 mm (6.4 in) across 18 days, along with an average humidity level of 80%.

January Temperature in Isak

In January in Isak, the average temperature is 20°C (68°F), with a maximum that can reach 28°C (82°F) and a minimum as low as 12°C (54°F). It's a great time to explore outdoor activities while enjoying mild weather!

January Weather in Isak: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Isak, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isak, January typically has an average temperature of 20°C (68°F), with highs reaching up to 28°C (82°F) and lows dropping to around 12°C (54°F).

Data source: Temperature data for Isak generated using information from the Copernicus Climate Change Service.

January Precipitation in Isak

In Isak in January, the total precipitation amount is 163 mm (6.4 in), spread over a period of 18 days.

January Precipitation Trends in Isak

The chart displays monthly precipitation patterns in Isak, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Isak, January typically receives around 163 mm (6.4 inches) of precipitation spread over approximately 18 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Isak

In Isak in January, humidity is 80%. With an average temperature of 20°C (68°F), this humidity feels like traveling through a warm, dense blanket that clings to your skin, making you feel both sticky and lethargic as you explore the sights.

January Average Humidity in Isak

This chart illustrates the average monthly humidity levels in Isak, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Isak is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Isak

In Isak in January, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Isak.

Maximum UV Index Levels in Isak for January

The chart shows the monthly maximum UV Index (UVI) for Isak in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Isak typically reaches 15, which falls under the extreme exposure category.

Data source: Isak January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Isak Compares to Other Months

Weather in Isak varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Isak, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Isak, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	163 mm (6.4 inches)	80%	extreme
February Weather	20°C (68°F)	106 mm (4.2 inches)	73%	extreme
March Weather	20°C (69°F)	157 mm (6.2 inches)	74%	extreme
April Weather	20°C (69°F)	220 mm (8.7 inches)	69%	extreme
May Weather	21°C (69°F)	294 mm (11.6 inches)	75%	extreme
June Weather	20°C (69°F)	127 mm (5.0 inches)	81%	extreme
July Weather	20°C (69°F)	158 mm (6.2 inches)	79%	extreme
August Weather	20°C (68°F)	171 mm (6.7 inches)	84%	extreme
September Weather	20°C (68°F)	224 mm (8.8 inches)	86%	extreme
October Weather	20°C (68°F)	275 mm (10.8 inches)	86%	extreme
November Weather	20°C (67°F)	362 mm (14.3 inches)	86%	extreme
December Weather	20°C (68°F)	348 mm (13.7 inches)	86%	extreme