Climate and monthly weather forecast
Rijeka, Croatia

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The colorful and hilly seaside scenic city of Rijeka in Croatia
The colorful and hilly seaside scenic city of Rijeka in Croatia

The climate of Rijeka

Rijeka, nestled along the edge of Croatia, is characterized by a Cfb Köppen climate classification. This suggests a marine west coast climate with warm summer temperatures. Traversing the spectrum of temperatures throughout the year, average high temperatures scale from 9.1°C (48.4°F) in the cooler months to a distinct high point of 28.1°C (82.6°F) in the height of the summer. The cooler average low temperature dips down to 2.9°C (37.2°F), gradually climbing to a peak of 18.6°C (65.5°F) in the hotter season.

The precipitation situation in Rijeka is an intriguing projection of variation, with rainfall ranging from 70mm (2.76") in the drier month to 204mm (8.03") in the wetter timeframes. There are also noticeable fluctuations in the number of rainfall days, with a low number of 8.5 days contrasting with a significant high of 12.6 days. While rainfall is a common occurrence in Rijeka, snowfall is decidedly rare, with barely a day of snowfall recorded in a year.

The changes in relatve humidity throughout the year hover between 56% at the drier end and a slightly higher 67.4% in the more humid periods. Daylight hours in Rijeka wax and wane between 8.8 hours during shorter days, extending up to 15.6 hours during extended daylight periods. Corresponding to this illuminative variety, levels of UV radiation swing from 1 in less exposed months, rising to a severe 8 in months of higher sun exposure.

The best time to visit Rijeka

Marked by warm temperatures, moderate rainfall and extended daylight, summer months of June, July, and August emerge as the ideal time to pay a visit to Rijeka. With high temperatures fluctuating between 24.6°C (76.3°F) to 28.1°C (82.6°F), and sea temperature soaring from 22.6°C (72.7°F) to 24.9°C (76.8°F), these months offer a splendid opportunity for sightseeing, sunbathing, and water sports. The moderately low rainfall of 70mm (2.76") to 120mm (4.72"), combined with longest daylight hours of 14.9 to 15.6 hours, and high UV index of 7 to 8, provide an ideal scenario for outdoor pursuits.

The worst time to visit Rijeka

The unfavorable tourism period in Rijeka is during the late autumn and winter months of November, December, and January. With the average high temperatures plummeting to between 10.1°C (50.2°F) and 13.2°C (55.8°F), and lows dropping to a chilly 4°C (39.2°F) to 6.6°C (43.9°F), weather conditions can be quite severe for most tourists. Coupled with the high average rainfall stretching from 156mm (6.14") to 182mm (7.17") and the relative lack of sunshine hours diminishing to between 3.2 to 3.7 hours, these conditions impede outdoor activities.

Spring weather in Rijeka

Spring temperatures in Rijeka commence a steady ascent with highs ranging from 12.6°C (54.7°F) in March to a pleasant 21.1°C (70°F) in May. Low temperatures follow a similar upward trend, starting from 5.5°C (41.9°F) and peaking at 12.8°C (55°F) in May. Rainfall makes its notable presence felt with volumes fluctuating from 113mm (4.45") in March to 103mm (4.06") in May. Sunlight hours also expand from 11.9 in March to 14.9 in May, which makes Spring a lovely time to explore Rijeka outdoors.

Summer weather in Rijeka

Basking in the pleasant balminess of Summer, Rijeka sees temperatures rise from 21.1°C (70°F) in June scaling up to 28.1°C (82.6°F) in August. The lows also trend upward from 12.8°C (55°F) to 18.6°C (65.5°F) in August. The rainfall markers of 120mm (4.72") in June descend to a lower 70mm (2.76") in the month of July. Sunlight hours remain constantly high, ranging from 15.6 hours in June to 14.1 hours in August. This combination of warm temperatures, light rainfall, and extended daylight make summer the prime season to visit Rijeka.

Autumn weather in Rijeka

Autumn temperatures in Rijeka command a divergent range, with highs commencing at 23.5°C (74.3°F) in September and descending to 13.2°C (55.8°F) in November. The lows tread a similar diminishing path, starting at 14.9°C (58.8°F) and tapering off to 6.6°C (43.9°F) in November. The rainfall showers its ample presence with volumes surging from 157mm (6.18") in September to a significant 182mm (7.17") in November. Sunlight hours commence their decrease from 12.5 hours in September to a lesser 9.5 hours in the late Autumn.

Winter weather in Rijeka

In this season, Rijeka experiences a noticeable drop in temperature. The high temperatures hover from 13.2°C (55.8°F) in December down to 9.1°C (48.4°F) in February, while the lows fluctuate from 6.6°C (43.9°F) in December to 2.9°C (37.2°F) in February. The reliable presence of rainfall casts its influence with quantities ranging from 156mm (6.14") in December to 129mm (5.08") in February. Sunlight hours begin their gradual increase from a minimal 8.8 hours in December to 10.4 hours in February. This makes winter a time for indoor pursuits and experiences within Rijeka.

Weather in January

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. Weather in January »

Weather in February

February in Rijeka sees a slight increase in the city's average temperature, both on the low and high ends. It is marked by a relative drop in humidity when compared with January. The sea remains relatively chilly, still retaining a lot of its winter coolness. Weather in February »

Weather in March

The weather in March signals the transition from winter to spring in Rijeka. It paints a picture of blooming flowers under the pleasantly warm sun that shines longer than it did in February. The ethereal blue Adriatic Sea begins to warm up, with the average sea temperature rising to 11.3°C (52.3°F). Weather in March »

Weather in April

April brings about a noticeable shift in Rijeka's weather from the cool and occasional dreariness of early spring towards the warmth and radiance of late spring. It encapsulates the essence of a Croatian spring with vibrant blue skies and blossoming flora. Weather in April »

Weather in May

May’s warm and pleasant conditions herald the onset of summer in Rijeka, with temperatures reaching an agreeable range. Residents and visitors can soak up the sunshine that bathes the city in a warm glow for a surging 7.5 hours daily. Weather in May »

Weather in June

June arrives with an enchanting summer presence in Rijeka. Daylight extends further, casting a charming appeal on the city's architectural grandeur. Warm winds prevail during this period, enhancing the coastal city's allure. The length of sunshine-filled days increases during this period, providing more time to explore the city's intriguing history and outstanding coastal landscapes. Weather in June »

Weather in July

July in Rijeka officially marks the climatological peak of summer, intensifying all the characteristic weather conditions. Sunshine is at its peak, brightening the already vibrant cityscape. The Adriatic sea reaches a sizzling 24.8°C (76.6°F), with beaches bustling with locals and tourists seeking solace in the sea waves. Weather in July »

Weather in August

August in Rijeka continues the summer escapade with an average high temperature very similar to July’s. The city is drenched in an abundance of sunshine with sunlight hours being virtually akin to July. Despite being a summer month, rainfall sees an increase compared to July, with a precipitation of 102mm (4.02"). Weather in August »

Weather in September

Rijeka's September weather typically announces the advent of autumn. The average high temperature begins to cool from the summer peak, and the nights gradually grow colder. Daily sunshine hours start to decrease, yet Rijeka maintains its scenic charm. Weather in September »

Weather in October

October marks a further dip in temperature in Rijeka, subtly hinting at the approaching winter. Rainfall reaches a yearly peak with recorded precipitation of 204mm (8.03"). Despite the gradually cooling weather, the city's scenic beauty never fades. Weather in October »

Weather in November

As the last month of autumn, November sees a stark shift in Rijeka's weather. With temperatures falling to colder numbers, the coastal breeze becomes brisker. The rainfall continues its autumnal trend, reaching 182mm (7.17"), adding to the city's winter-like ambiance. Weather in November »

Weather in December

Rijeka concludes the year with December showcasing a potent blend of cold and wet climatic conditions. The city's architecture shimmers under the vivid winter sun, creating an enchanting backdrop. Decreased sunlight hours mark the winter solstice, and the city lights lead the festive spirit. Weather in December »
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Frequently asked questions

What part of the year is the coldest in Rijeka?

January is the month when Rijeka, Croatia, experiences its coldest temperatures, averaging a high of 9.1°C (48.4°F) and a low of 2.9°C (37.2°F).

How many days does it rain in Rijeka?

Throughout the year, in Rijeka, there are 130.3 rainfall days, and 1552mm (61.1") of precipitation is accumulated.

When does it snow in Rijeka?

January through March and December are months with snowfall in Rijeka.

When does it snow the most in Rijeka?

The month with the most snowfall days is January, when snow falls for 0.8 days.

How many days does it snow in Rijeka?

In Rijeka, Croatia, during the entire year, snow falls for 1.4 days.

When is the lowest UV index in Rijeka?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Rijeka.

When is the sea coldest in Rijeka?

With an average sea temperature of 10.7°C (51.3°F), February is the month with the coldest seawater in Rijeka, Croatia.

When it does not snow in Rijeka?

April through November are months without snowfall.

When are the longest days in Rijeka?

With an average of 15h and 36min of daylight, June has the longest days of the year in Rijeka.

When is the highest UV index in Rijeka?

June and July, with an average maximum UV index of 8, are months with the highest UV index in Rijeka, Croatia.

What is the driest month in Rijeka?

The month with the least rainfall in Rijeka, Croatia, is July, when the rain falls for 8.8 days and typically collects 70mm (2.76") of precipitation.

What month has the most sunshine in Rijeka?

July has the most sunshine of the year in Rijeka, Croatia, with an average of 9.6h of sunshine.

What month is the hottest in Rijeka?

The warmest time of the year is August, with temperatures averaging a high of 28.1°C (82.6°F) and a low of 18.6°C (65.5°F).

What is the least humid month in Rijeka?

August is the least humid month in Rijeka, Croatia, with an average relative humidity of 56%.

What month is the sea warmest in Rijeka?

August is the month with the warmest seawater, with an average sea temperature of 24.9°C (76.8°F).

What is the most humid month in Rijeka?

The most humid month is October, with an average relative humidity of 67.4%.

What is the rainiest month in Rijeka?

October is the month with the most rainfall. Rain falls for 12.1 days and accumulates 204mm (8.03") of precipitation.

When is Daylight Saving Time (DST) in Rijeka?

On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.

What is the month with the shortest days in Rijeka?

December has the shortest days of the year in Rijeka, with an average of 8h and 48min of daylight.

What is the month with the least sunshine in Rijeka?

With an average of 3.2h of sunshine, December has the least sunshine of the year in Rijeka, Croatia.

Average temperature
Rijeka, Croatia

Average temperature - Rijeka, Croatia

The warmest month (with the highest average high temperature) is August (28.1°C).
The month with the lowest average high temperature is January (9.1°C).

The months with the highest average low temperature are July and August (18.6°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).

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Average humidity
Rijeka, Croatia

Average humidity - Rijeka, Croatia

The month with the highest relative humidity is October (67.4%).
The month with the lowest relative humidity is August (56%).

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Average rainfall
Rijeka, Croatia

Average rainfall - Rijeka, Croatia

The wettest month (with the highest rainfall) is October (203.9mm).
The driest month (with the least rainfall) is July (70.1mm).

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Average rainfall days
Rijeka, Croatia

Average rainfall days - Rijeka, Croatia

The month with the highest number of rainy days is April (12.6 days).
The month with the least rainy days is February (8.5 days).

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Average snowfall days
Rijeka, Croatia

Average snowfall days - Rijeka, Croatia

The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature
Rijeka, Croatia

Average sea temperature - Rijeka, Croatia

The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (10.7°C).

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Average daylight / Average sunshine
Rijeka, Croatia

Average daylight / Average sunshine - Rijeka, Croatia

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).

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Rijeka, Croatia

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