Sliven Weather Year-Round — Best Time to Visit
Sliven, Bulgaria has mild weather year-round. The best time to visit is August (score: 91/100). Annual average high: 17.3°C, total rainfall: 777mm.
When is the best time to visit Sliven?
91
August is the best month to visit Sliven with a travel score of 91/100 (Excellent).
Expect highs of 28.8°C, 7 rain days, and 12.5 hours of daily sunshine.
View August weather details →Travel Score by Month
51
Jan
57
Feb
62
Mar
70
Apr
76
May
82
Jun
87
Jul
91
Aug
88
Sep
74
Oct
62
Nov
51
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Sliven each month?
17.3°C
Avg High
8.4°C
Avg Low
777mm
Annual Rain
How much rain does Sliven get?
Sliven receives 777mm of rain annually. The wettest month is typically May with 88mm, while August is the driest.
What is the weather like each month in Sliven?
January
51
6°C
Low: -1°C
8 rain days
Mixed
February
57
8°C
Low: 0°C
8 rain days
Mixed
March
62
11°C
Low: 2°C
10 rain days
Good
April
70
17°C
Low: 7°C
11 rain days
Good
May
76
22°C
Low: 12°C
13 rain days
Good
June
82
26°C
Low: 16°C
12 rain days
Excellent
July
87
29°C
Low: 18°C
9 rain days
Excellent
August
Best time to visit91
29°C
Low: 18°C
7 rain days
Excellent
September
88
24°C
Low: 14°C
7 rain days
Excellent
October
74
18°C
Low: 9°C
7 rain days
Good
November
62
12°C
Low: 5°C
7 rain days
Good
December
51
7°C
Low: 1°C
9 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31