Semily

What is the climate like in Semily?

The best time to visit Semily is typically June – August, with trip comfort peaking in July (7.0/10). Semily is warmest in August, when daily highs average 76°F (24°C), and coolest in January, when lows fall to about 27°F (-3°C). The wettest month is typically August and the driest is April; the year sees roughly 31 in (775 mm) of precipitation.

• Best time to visitJune – August — comfort peaks in July (7.0/10)
• Warmest monthAugust — average high 76°F (24°C)
• Coolest monthJanuary — average low 27°F (-3°C)
• Wettest monthAugust (3.3 in (84 mm))
• Driest monthApril (1.8 in (46 mm))
• Annual precipitation31 in (775 mm)
• Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
• Records fromLiberec, 29 km away (1938-2025)