January Weather in Ruhnu, Estonia

Last updated: August 23, 2025

In Ruhnu, Estonia, the average temperature in January hovers around 1°C (34°F), with lows plummeting to -9°C (16°F) and highs reaching up to 8°C (46°F). Expect a wet month, with approximately 48 mm (1.9 in) of precipitation spread over 13 days. The air feels particularly moist, with an average humidity level of 93%.

January Temperature in Ruhnu

In January in Ruhnu, the average temperature is 1°C (34°F). Maximums can reach 8°C (46°F), while minimums can drop as low as -9°C (16°F). It's advisable to pack warm clothing and be prepared for chilly conditions if you're planning to visit during this time.

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

The chart illustrates January temperature patterns in Ruhnu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ruhnu, January typically has an average temperature of 1°C (34°F), with highs reaching up to 8°C (46°F) and lows dropping to around -9°C (16°F).

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

January Precipitation in Ruhnu

In Ruhnu in January, the total precipitation amount is 48 mm (1.9 in) spread over 13 days.

January Precipitation Trends in Ruhnu

The chart displays monthly precipitation patterns in Ruhnu, 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 Ruhnu, January typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 13 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 Ruhnu

In Ruhnu in January humidity is 93%. With an average temperature of 1°C (34°F), this humidity feels like an icy blanket enveloping you, making every step outdoors a challenge as the cold air clings to your skin, intensifying the chill and dampness.

January Average Humidity in Ruhnu

This chart illustrates the average monthly humidity levels in Ruhnu, 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 Ruhnu is approximately 93%, 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 Ruhnu

In Ruhnu in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Ruhnu.

Maximum UV Index Levels in Ruhnu for January

The chart shows the monthly maximum UV Index (UVI) for Ruhnu 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 Ruhnu typically reaches 1, which falls under the low exposure category.

Data source: Ruhnu 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 Ruhnu Compares to Other Months

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

This table compares monthly weather conditions in Ruhnu, 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)	48 mm (1.9 inches)	93%	low
February Weather	0°C (32°F)	43 mm (1.7 inches)	91%	low
March Weather	1°C (34°F)	47 mm (1.9 inches)	90%	moderate
April Weather	4°C (39°F)	28 mm (1.1 inches)	87%	moderate
May Weather	9°C (48°F)	35 mm (1.4 inches)	72%	high
June Weather	16°C (60°F)	45 mm (1.8 inches)	76%	high
July Weather	18°C (65°F)	77 mm (3.0 inches)	76%	high
August Weather	18°C (65°F)	91 mm (3.6 inches)	80%	high
September Weather	15°C (59°F)	92 mm (3.6 inches)	87%	moderate
October Weather	11°C (51°F)	108 mm (4.2 inches)	91%	low
November Weather	7°C (44°F)	87 mm (3.4 inches)	92%	low
December Weather	3°C (37°F)	64 mm (2.5 inches)	93%	low