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Climate - Croatia


Average weather, temperature, rainfall, sunshine

Flag - Croatia

Map - Croatia

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In Croatia, an Eastern European country overlooking the Adriatic Sea, there are three types of climate:
- the climate of Istria, the coast and the islands, mild (especially in the southern part) and rainy;
- the climate of the Dinaric Alps, cold and snowy in winter and cool in summer, with thunderstorms in the afternoon;
- the continental climate of the interior plains.

Croatia is moderately rainy in the plains and inland valleys, and definitely rainy along the coast and the western slopes of the mountain ranges. The rainfall pattern is Mediterranean along the coast, with a minimum in summer and a maximum in autumn and winter, while in the interior plains, precipitation is frequent throughout the year, and in winter, it often occurs in the form of snow, but it's more abundant in summer, when it often occurs in the form of thunderstorms.

Index


  • Adriatic coast - Istria, Dalmatia
  • Dinaric Alps
  • Northern plains

Adriatic coast



On the Adriatic coast, the climate is Mediterranean, but in the northern part, where winter is quite cold and summer remains quite rainy, it can be described as transitional Mediterranean.
In autumn and winter, the sirocco brings rainfall, while in summer, a north-westerly breeze, called mistral, blows.
Rainfall is quite abundant on the entire Adriatic coast, but especially in the cities located at the foot of the mountains (see Rijeka), where between 1,000 and 1,500 millimeters (40 and 60 inches) of rain fall per year. Otherwise, on the west coast of Istria (see Rovinj) and on the islands, rainfall amounts to 800/1,000 mm (31/40 in) per year.
Summer is sunny throughout the coastal strip, with occasional rains or thunderstorms, most likely in the north, in Istria; only in the northernmost zone, where Rijeka is located, the rains are quite frequent and abundant even in July and August.

Istria

The northern coast, in Istria (see Pula, Pola in Italian) and in cities such as Rijeka (Fiume), has fairly mild winters, with an average in January around 5/6 °C (41/43 °F), but with sudden drops in temperature when the Bora blows, a violent wind coming from the freezing Russian plains. However, snowfalls are rare and not abundant because continental air is dry. In these cases, the temperature can drop as low as -10 °C (14 °F).
Summers are warm and sunny, sometimes hot, though the breeze tempers the heat. Sometimes, there can be cool days, with rains and a bit of Bora, even in summer. There can also be hot and sultry periods, with highs of 35 °C (95 °F) and more.
Here are the average temperatures of Pula.
Pula - Average temperatures (1996-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January1105.3345041.6
February1115.8345142.4
March4148.7385747.7
April71812.3446454.2
May112216.7527262.1
June152721.1608069.9
July173023.4638574.1
August182923.6648574.5
September142419.1577666.3
October101914.8506758.7
November61510.6445951.2
December2116.6365244
Year8.919.214.054866.657.5

Here is the average precipitation in Pula, where 870 mm (34 in) of rain fall per year.
Pula - Average precipitation
MonthMillimetersInchesDays
January803.18
February652.67
March652.67
April702.88
May552.27
June552.26
July5024
August7535
September853.37
October853.38
November803.110
December1104.38
Year87034.385

In Pula and in the Northern Adriatic, the sun does not shine very often in winter, while in summer, it frequently shines (though less than in the southern part). Here are the average sunshine hours per day.
Pula - Sunshine hours
MonthAverageTotal
January395
February4115
March5155
April6180
May8250
June9270
July10310
August9280
September7210
October5155
November390
December395
Year62195

The temperature of the sea is warm enough for swimming in summer, especially in July and August, but also in September.
Pula - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January1254
February1152
March1253
April1457
May1864
June2272
July2577
August2678
September2374
October2068
November1762
December1458
Year17.964.2

Dalmatia

In Dalmatia, the Croatian coastal region to the south of Istria, the climate becomes progressively milder.
In the northernmost islands (see Cres, Krk, Rab), winter is still quite cold, while in the central part (see Losinj, Pag, and on the coast where Zadar, Sibenik and Split are found), the average in January rises to around 8 °C (46 °F).
In winter, however, outbreaks of cold air are possible here as well, with a wind similar to the Bora (though somewhat milder), especially at the mouth of the valleys, where the air is channeled between the mountains. In these cases, the temperature can drop as low as -6/-7 °C (19/21 °F).
Compared to Istria, summer in Dalmatia is a bit warmer and sunnier. Very hot and muggy periods are more frequent and of longer duration, especially in the cities (and a little less on the islands).
In Split (Spalato), the daily average temperature ranges from 8.3 °C (47 °F) in January to 27 °C (80.5 °F) in July. Here are the average temperatures.
Split - Average temperatures (1991-2018)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January6118.3435146.9
February6118.6435347.6
March81411.4475852.6
April121815536559
May162419.9617467.8
June202824.1688275.4
July233126.9738880.4
August233126.9738880.3
September182521.8657871.2
October152017.6586963.6
November111613.1516055.6
December7129.4455348.8
Year13.820.216.9556.868.362.5

In Split, 800 mm (31.5 in) of rain fall per year, with a Mediterranean pattern, so with a summer minimum.
Split - Average precipitation
MonthMillimetersInchesDays
January702.88
February702.88
March602.47
April652.68
May552.26
June5025
July2513
August351.43
September803.16
October803.17
November1254.910
December903.59
Year80031.580

In Split, the amount of sunshine is slightly higher than in the northern part of the coast, and it is very good in summer.
Split - Sunshine hours
MonthAverageTotal
January4.5135
February5.5150
March6190
April7.5220
May9280
June10.5320
July11.5360
August11335
September8245
October6.5195
November4.5130
December4125
Year7.42690

In Split, the sea temperature is a bit warmer in winter compared to the norther part, while it is quite the same in summer.
Split - Sea temperature
MonthCelsius (°C)Fahrenheit (°F)
January1458
February1457
March1457
April1559
May1864
June2271
July2576
August2578
September2374
October2068
November1763
December1660
Year18.665.4

Korcula

In the southern part of the coast, south of Split, in the islands of Brac, Hvar, Vis, Korcula and Mljet, and in the city of Dubrovnik (Ragusa), the January average reaches 10/11 °C (50/52 °F).
Here are the average temperatures in Dubrovnik, located in the southernmost part of the coast.
Dubrovnik - Average temperatures (1991-2018)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January7139.8455549.6
February71310455550.1
March91512.2495954
April121815.1546559.3
May162319.6617367.2
June202723.6688074.4
July233026.1738579
August233026.6748679.9
September192622.7677972.8
October162218.7607165.7
November121814.6536458.3
December81410.9475751.7
Year14.420.717.557.969.363.5

In Dubrovnik and in the southern part of the coast, the sea temperature is practically the same as in Split.

Dinaric Alps



The Dinaric Alps separate the Mediterranean world from the interior plains. The highest peak in Croatia, which also gives its name to the mountain range, is Dinara (1,831 meters or 6,007 feet), on the border with Bosnia.
In the area of the Dinaric Alps, the climate is more continental, but is very rainy (and snowy in winter) because of the proximity to the sea, especially on the slopes exposed to the west and south. In fact, in the most humid areas, precipitation can even reach 3,000 mm (120 in) per year.
In Gospic, located less than 20 kilometers (12 miles) away from the coast, and 550 meters (1,800 ft) above sea level, the average temperature in January is 0 °C (32 °F), while in July and August it's 19.5 °C (67 °F). Here are the average temperatures.
Gospic - Average temperatures (1991-2018)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January-440.1253932.1
February-461.1254334.1
March0115.1315141.2
April3159.3385948.8
May72013.8456856.8
June112417.4517663.4
July122719.5548067.1
August122719.6548167.3
September82114.7477058.4
October51610.6416151
November2105.8355042.4
December-350.7264033.3
Year4.215.69.8539.56049.5

During winter, cold waves can occur, with noticeable peaks (even -30 °C or -22 °F). In spring, pleasant days alternate with the return of cold weather, with possible snowfalls even in April. During summer, some afternoon thunderstorms are possible, and nights remain cool, but sometimes, the days can be hot.
The Plitvice Lakes National Park is located in this area, about 550/600 meters (1,800/2,000 feet) above sea level.
At higher altitudes, winter is freezing and summer is cool. Here are the average temperatures at the Zavizan mountain hut, at 1,600 meters (5,250 feet), in the northern Velebit national park.
Zavizan - Average temperatures
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January-6-1-3.4213125.9
February-6-1-3.7203025.3
March-41-1.4243529.4
April-141.6304034.9
May4107395044.5
June71410.3455650.5
July91713496255.4
August101713.2496255.8
September6139.4435548.9
October285.4364741.7
November-230.5283832.8
December-50-2.2233328
Year1.17.24.15344539.5

Here is the average precipitation.
Zavizan - Average precipitation
MonthMillimetersInchesDays
January1455.712
February1455.712
March1455.712
April1807.114
May1556.111
June1556.111
July853.37
August1204.77
September1807.110
October2158.512
November2459.613
December2058.114
Year198578.1135

Northern plains



In the northern and eastern plains, the climate is continental, and the rainfall pattern is very different from that of the Mediterranean: summer is the rainiest season, mainly because of thunderstorms occurring in the afternoon, while in winter, although precipitation is frequent (and often occurs in the form of snow), it is not abundant.
In Zagreb, the capital, the monthly average temperature ranges from 1.5 °C (34.5 °F) in January to 22 °C (72 °F) in July.
Zagreb - Average temperatures (1996-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January-251.4284134.5
February-183.4304638.2
March2137.6365545.7
April71812.4446454.3
May112216.7527262.1
June152620.6597969.1
July162822.1618271.8
August162822618271.6
September122217.1537262.8
October81712.3466354.2
November4117.2385245
December-152.2304235.9
Year7.31712.145.162.654

The sun in Zagreb is rarely seen in winter, while it shines quite often in summer, though not as often as along the coast.
Zagreb - Sunshine hours
MonthAverageTotal
January2.575
February3.5105
March4.5145
April6185
May8240
June8.5255
July9280
August8.5270
September6180
October4130
November2.570
December260
Year5.52000

Precipitation is still quite abundant, about 885 mm (35 in) per year, with a minimum in winter and a maximum between summer and autumn. Here is the average precipitation in Zagreb.
Zagreb - Average precipitation
MonthMillimetersInchesDays
January451.86
February5027
March5027
April652.69
May7539
June853.39
July853.38
August853.37
September1003.99
October903.58
November853.39
December602.48
Year88534.896

Zagreb

The situation is similar across the northern plain (see Varazdin), except in the eastern part, where precipitation drops to 750 mm per year (see Slavonski Brod), and in the extreme east, on the border with Serbia, in cities like Osijek and Vukovar, where the autumn rains are poorer, and annual precipitation drops to around 700 mm (27.5 in).
For the rest, the climate in the northern plain is similar. Winter is cold, a cold drizzle or snow often falls, days can be dull and foggy, but sometimes, cold air masses from Russia can lower the temperature to about -20 °C (-4 °F). Summer is warm or even hot, with pleasant days alternating with hot and sultry days, with some chance of thunderstorms in the afternoon. Sometimes there may be heat waves, with highs of 37/38 °C (99/100 °F).

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 See also (cities or regions):

 Dubrovnik
 Gospic
 Hvar
 Losinj
 Osijek
 Pazin
 Pula
 Rijeka
 Rovinj
 Others (expand)
 Sibenik
 Slavonski Brod
 Split
 Varazdin
 Zadar
 Zagreb

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