Climate almanac
Tvarditsa
Sliven, Bulgaria · 42.70°, 25.90°
What is the climate like in Tvarditsa?
The best time to visit Tvarditsa is typically July – September, with trip comfort peaking in August (8.4/10). Tvarditsa is warmest in August, when daily highs average 84°F (29°C), and coolest in January, when lows fall to about 28°F (-2°C). The wettest month is typically May and the driest is September; the year sees roughly 31 in (793 mm) of precipitation.
- Best time to visitJuly – September — comfort peaks in August (8.4/10)
- Warmest monthAugust — average high 84°F (29°C)
- Coolest monthJanuary — average low 28°F (-2°C)
- Wettest monthMay (4.0 in (102 mm))
- Driest monthSeptember (1.3 in (34 mm))
- Annual precipitation31 in (793 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)