January Weather in Ondong Siau, Indonesia

Last updated: August 23, 2025

In January, the average temperature in Ondong Siau, Indonesia is a warm 27°C (81°F), with a minimum of 25°C (77°F) and a maximum reaching 29°C (84°F). However, be prepared for some rain, as the region experiences an average precipitation of 297 mm (11.7 in) over 21 days. The average humidity lingers around 78%, ensuring a tropical feel throughout the month.

January Temperature in Ondong Siau

In January in Ondong Siau, the average temperature is 27°C (81°F). Maximums can reach 29°C (84°F), while minimums can drop to 25°C (77°F). This mild and pleasant weather makes Ondong Siau an ideal destination for travelers seeking warmth and comfort.

January Weather in Ondong Siau: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Ondong Siau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ondong Siau, January typically has an average temperature of 27°C (81°F), with highs reaching up to 29°C (84°F) and lows dropping to around 25°C (77°F).

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

January Precipitation in Ondong Siau

In Ondong Siau in January, the total precipitation amount is 297 mm (11.7 in), which occurs over the course of 21 days.

January Precipitation Trends in Ondong Siau

The chart displays monthly precipitation patterns in Ondong Siau, 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 Ondong Siau, January typically receives around 297 mm (11.7 inches) of precipitation spread over approximately 21 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Ondong Siau

In Ondong Siau in January humidity is 78%. With an average temperature of 27°C (81°F), this humidity feels like a warm, heavy embrace that makes traveling feel both invigorating and exhausting. Moments spent outside can quickly become clammy and uncomfortable, urging travelers to seek shade and hydration as they explore.

January Average Humidity in Ondong Siau

This chart illustrates the average monthly humidity levels in Ondong Siau, 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 Ondong Siau is approximately 78%, 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 Ondong Siau

In Ondong Siau in January, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Ondong Siau, you can check here.

Maximum UV Index Levels in Ondong Siau for January

The chart shows the monthly maximum UV Index (UVI) for Ondong Siau 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 Ondong Siau typically reaches 14, which falls under the extreme exposure category.

Data source: Ondong Siau 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 Ondong Siau Compares to Other Months

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

This table compares monthly weather conditions in Ondong Siau, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	297 mm (11.7 inches)	78%	extreme
February Weather	27°C (81°F)	172 mm (6.8 inches)	83%	extreme
March Weather	27°C (81°F)	252 mm (9.9 inches)	82%	extreme
April Weather	27°C (82°F)	147 mm (5.8 inches)	80%	extreme
May Weather	28°C (82°F)	212 mm (8.3 inches)	74%	extreme
June Weather	27°C (82°F)	289 mm (11.4 inches)	74%	extreme
July Weather	27°C (82°F)	252 mm (9.9 inches)	75%	extreme
August Weather	28°C (82°F)	182 mm (7.2 inches)	76%	extreme
September Weather	27°C (82°F)	170 mm (6.7 inches)	77%	extreme
October Weather	28°C (82°F)	163 mm (6.4 inches)	75%	extreme
November Weather	27°C (82°F)	259 mm (10.2 inches)	74%	extreme
December Weather	27°C (81°F)	272 mm (10.7 inches)	75%	extreme