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The climate of Bulgaria is continental. In this country the winters are severe. In the months of December / January temperatures can always remain below freezing even for weeks with peaks below -10 ° / -15 ° C. While summers are hot. In this season temperatures easily exceed 30 ° C. winters are harsh and hot summers, especially on the Danubian side.
Precipitation in most of the country is generally scarce (around 500 mm per year). But they are more copious on the Balkans. The climate of Bulgaria is relatively milder and more temperate along the Black Sea coast in the eastern part of the country. In the Danubian region there are strong annual temperature variations with winter temperatures down to -25 ° C and summer temperatures up to 40 ° C.
The driest areas of the country are those closest to the coast, i.e. the regions of Dobruja (Dobrudzha) and the northern coastal area. While the rainiest areas of Bulgaria are the north-western and south-western mountainous areas, i.e. the highest areas of the Rila and Stara Planina mountain ranges.
The capital Sofia, located on a plateau 600 meters above sea level, has cold and snowy winters and hot and relatively rainy summers. In one year it receives on average 650 mm of precipitation. The relatively rainiest period is between April and August.
The water temperature of the Black Sea varies between 24 ° C in the month of August and 9 ° C in the months from January to March. In the months between June and September the water temperature of the Black Sea is above 21 ° C and is suitable for swimming in the sea.
WHEN TO GO TO BULGARIA
The best time for a trip to Bulgaria are the hottest and mild months between May and September, although July and August can sometimes be rather sultry.
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THE CLIMATE OF BULGARIA: CLIMATE TABLES
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| SOFIA (595 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days (snowy days) |
| January | -3,9 | 3,4 | 33,2 | 9 (7,2) |
| February | -2,9 | 5,6 | 31,5 | 10 (6,2) |
| March | 0,8 | 10,6 | 38,1 | 10 (5,7) |
| April | 5,4 | 16,2 | 50,7 | 12 (1,4) |
| May | 9,8 | 21,1 | 67,0 | 13 |
| June | 13,2 | 24,7 | 75,4 | 12 |
| July | 15,1 | 27,3 | 52,6 | 10 |
| August | 14,9 | 27,5 | 57,6 | 9 |
| September | 11,0 | 22,9 | 45,7 | 7 |
| October | 6,6 | 17,1 | 45,0 | 11 (0,8) |
| November | 1,4 | 9,7 | 43,3 | 10 (3) |
| December | -2,4 | 4,3 | 41,7 | 12 (7) |
| YEAR | 5,8 | 15,9 | 581,8 | 125 (31,3) |
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| SUNNY BEACH (7 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days |
| January | 0,2 | 7,0 | 44,3 | |
| February | 1,5 | 8,3 | 47,6 | |
| March | 4,1 | 11,7 | 48,2 | |
| April | 8,0 | 16,2 | 69,8 | |
| May | 13,3 | 22,4 | 49,9 | |
| June | 17,5 | 27,2 | 32,1 | |
| July | 19,6 | 29,2 | 27,6 | |
| August | 19,8 | 29,3 | 28,4 | |
| September | 16,3 | 25,1 | 45,5 | |
| October | 11,7 | 19,8 | 62,2 | |
| November | 6,6 | 14,0 | 68,9 | |
| December | 1,6 | 8,5 | 57,1 | |
| YEAR | 10,0 | 18,2 | 581,6 | |
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| VARNA (80 meters) | ||||
| Month | Average low (°C) | Average high (°C) | Precip. (mm) | Precip. days |
| January | -1,7 | 6,2 | 31,8 | 13,5 |
| February | -1,1 | 7,4 | 29,9 | 11,3 |
| March | 1,7 | 10,3 | 43,7 | 11,9 |
| April | 6,1 | 14,8 | 57,0 | 9,3 |
| May | 10,8 | 20,4 | 43,9 | 6,9 |
| June | 15,0 | 25,1 | 57,6 | 6,2 |
| July | 17,2 | 27,8 | 50,7 | 4,7 |
| August | 17,1 | 27,9 | 41,4 | 3,3 |
| September | 13,5 | 23,9 | 44,1 | 6,5 |
| October | 9,1 | 18,6 | 42,6 | 9,6 |
| November | 4,6 | 12,8 | 55,6 | 8,9 |
| December | 0,5 | 8,1 | 42,0 | 11,5 |
| YEAR | 7,8 | 17,0 | 540,3 | 103,6 |
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| HARMANI (BLACK SEA) | ||||
| Month | Sea Water Temperature °C | |||
| January | 9 | |||
| February | 9 | |||
| March | 9 | |||
| April | 11 | |||
| May | 16 | |||
| June | 21 | |||
| July | 24 | |||
| August | 24 | |||
| September | 22 | |||
| October | 18 | |||
| November | 14 | |||
| December | 11 | |||
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