January Weather in Castelu, Romania

Last updated: August 27, 2025

In January, the average temperature in Castelu, Romania hovers around 1°C (34°F). Expect chilly extremes with minimums dipping to -17°C (1°F) and maximums reaching 16°C (62°F). During this time, precipitation totals about 42 mm (1.7 in) spread over 6 days, contributing to an average humidity of a brisk 87%.

January Temperature in Castelu

In January in Castelu, the average temperature is 1°C (34°F). The maximum can reach 16°C (62°F), and the minimum can be as low as -17°C (1°F). Travelers should be prepared for a wide range of temperatures, from chilly to mild, and pack accordingly.

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

The chart illustrates January temperature patterns in Castelu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castelu, January typically has an average temperature of 1°C (34°F), with highs reaching up to 16°C (62°F) and lows dropping to around -17°C (1°F).

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

January Precipitation in Castelu

In Castelu in January, the total precipitation amount is 42 mm (1.7 in) spread over 6 days.

January Precipitation Trends in Castelu

The chart displays monthly precipitation patterns in Castelu, 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 Castelu, January typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 6 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 Castelu

In Castelu in January humidity is 87%. With an average temperature of 1°C (34°F), this humidity feels like a chilling blanket enveloping you, making every step outside feel heavy and damp, and leaving you longing for warmth and comfort while traveling.

January Average Humidity in Castelu

This chart illustrates the average monthly humidity levels in Castelu, 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 Castelu is approximately 87%, 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 Castelu

In Castelu 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 Castelu, you can visit Hourly UV Index in Castelu.

Maximum UV Index Levels in Castelu for January

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

Data source: Castelu 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 Castelu Compares to Other Months

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

This table compares monthly weather conditions in Castelu, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	42 mm (1.7 inches)	87%	low
February Weather	4°C (39°F)	41 mm (1.6 inches)	83%	moderate
March Weather	6°C (43°F)	51 mm (2.0 inches)	80%	moderate
April Weather	11°C (52°F)	30 mm (1.2 inches)	76%	high
May Weather	17°C (62°F)	43 mm (1.7 inches)	73%	very high
June Weather	22°C (71°F)	87 mm (3.4 inches)	68%	very high
July Weather	24°C (75°F)	59 mm (2.3 inches)	65%	very high
August Weather	24°C (76°F)	18 mm (0.7 inches)	53%	very high
September Weather	20°C (68°F)	16 mm (0.6 inches)	61%	high
October Weather	14°C (58°F)	45 mm (1.8 inches)	77%	moderate
November Weather	9°C (48°F)	39 mm (1.6 inches)	85%	moderate
December Weather	4°C (40°F)	59 mm (2.3 inches)	86%	low