January weather forecast
Rijeka, Croatia

In Rijeka, the first month of the year usually brings mild conditions with relative humidity averaging 65.1%. Daylight levels are relatively low, contributing to the mild chill in the air. Rainfall is often expected due to prevailing atmospherical conditions, while the mountains surrounding the city are more likely to experience snowfall. The intense and vibrant sea temperature acts as a buffer against the colder weather, with measurements averaging 11.4°C (52.5°F). Despite the cool conditions, January is seen as a beautiful month where the city is quieter, and the streets are less crowded.

Temperature

In Rijeka, January is the month with the lowest recorded average temperatures, measuring a high of 9.1°C (48.4°F) and a low of 2.9°C (37.2°F).

Humidity

The average relative humidity in January in Rijeka is 65.1%.

Rainfall

In Rijeka, during January, the rain falls for 10.7 days and regularly aggregates up to 129mm (5.08") of precipitation. In Rijeka, during the entire year, the rain falls for 130.3 days and collects up to 1552mm (61.1") of precipitation.

Snowfall

January through March and December are months with snowfall. The month with the most snowfall days in Rijeka, Croatia, is January, when snow falls for 0.8 days.

Sea temperature

In January, the average sea temperature is 11.4°C (52.5°F).
Note: Engaging in a swim in 11.4°C (52.5°F) can threaten life. Brief exposure to 13°C (55.4°F) waters is uneasy, and submersion below 10°C (50°F) can lead to cold shock and disrupted breathing patterns, varying by individual.

Daylight

In Rijeka, the average length of the day in January is 9h and 12min.
On the first day of the month, sunrise is at 07:41 and sunset at 16:29. On the last day of January, sunrise is at 07:24 and sunset at 17:06 CET.

Sunshine

The average sunshine in January is 3.6h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 1 during January translates into the following guidance:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.