January Weather in Costeiu, Romania

Last updated: August 27, 2025

In Costeiu, Romania, the average temperature in January hovers around 0°C (33°F). Be prepared for chilly conditions, as temperatures can dip as low as -16°C (4°F) and occasionally rise to a pleasant 15°C (60°F). During this time, expect around 51 mm (2.0 in) of precipitation spread over approximately 10 days, with an average humidity level of 89%. Bundle up and enjoy the winter wonderland!

January Temperature in Costeiu

In January in Costeiu, the average temperature is 0°C (33°F). Maximums can reach 15°C (60°F), while minimums can plummet to as low as -16°C (4°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both chilly and slightly warmer conditions.

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

The chart illustrates January temperature patterns in Costeiu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Costeiu, January typically has an average temperature of 0°C (33°F), with highs reaching up to 15°C (60°F) and lows dropping to around -16°C (4°F).

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

January Precipitation in Costeiu

In Costeiu in January, the total precipitation amount is 51 mm (2.0 in) spread over a period of 10 days.

January Precipitation Trends in Costeiu

The chart displays monthly precipitation patterns in Costeiu, 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 Costeiu, January typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 10 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 Costeiu

In Costeiu in January humidity is 89%. With an average temperature of 0°C (33°F), this humidity feels like a heavy, damp blanket that clings to your skin, making travel uncomfortable and every breath seem colder and more constricted.

January Average Humidity in Costeiu

This chart illustrates the average monthly humidity levels in Costeiu, 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 Costeiu is approximately 89%, 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 Costeiu

In Costeiu in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Costeiu, you can visit Hourly UV Index in Costeiu.

Maximum UV Index Levels in Costeiu for January

The chart shows the monthly maximum UV Index (UVI) for Costeiu 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 Costeiu typically reaches 2, which falls under the low exposure category.

Data source: Costeiu 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 Costeiu Compares to Other Months

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

This table compares monthly weather conditions in Costeiu, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	51 mm (2.0 inches)	89%	low
February Weather	4°C (40°F)	54 mm (2.1 inches)	86%	moderate
March Weather	7°C (45°F)	54 mm (2.1 inches)	82%	moderate
April Weather	12°C (54°F)	46 mm (1.8 inches)	73%	high
May Weather	17°C (62°F)	85 mm (3.3 inches)	74%	very high
June Weather	21°C (70°F)	92 mm (3.6 inches)	70%	very high
July Weather	23°C (73°F)	67 mm (2.6 inches)	70%	very high
August Weather	23°C (74°F)	61 mm (2.4 inches)	59%	very high
September Weather	18°C (65°F)	49 mm (1.9 inches)	67%	high
October Weather	13°C (55°F)	46 mm (1.8 inches)	82%	moderate
November Weather	8°C (47°F)	48 mm (1.9 inches)	89%	moderate
December Weather	3°C (38°F)	76 mm (3.0 inches)	91%	low