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Semily Weather in September
September in Semily sees daytime temperatures around 18°C (64°F) and lows of 9°C (48°F) at night. With around 79 mm (3.1 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Semily in September
Analyzing past climate data, one can expect approximately 13 days of rain, averaging 79 mm (3.1 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in Semily in September
September in Semily brings typical temperatures with highs around 18°C (64°F) and lows of 9°C (48°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.If you prefer dry days with pleasant temperatures, June and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Semily Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
18°C (64°F)
Chance of Rain
42%
Precipitation
79 mm (3.1 in)
Rainy days
13 days
Humidity
75% *
* Data from: Liberec, Czech Republic (27 KM, 16 Miles).
Semily Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Semily - and find the best time to visit.
Best Places in Czech Republic in September
Find out more about the weather in Czech Republic and which places have the best travel conditions in this month. See all of Czech Republic in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Semily in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days.
What To Do in Semily in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping4/10 -
Outdoor sports9/10
Semily 3-Day Forecast
More climate data for Semily
See the full Semily climate overview or explore weather in Czech Republic.
Popular in September
Where to go in September - average daytime high across popular destinations.
Prague
20°C (68°F) Brno21°C (70°F) Mariánské Lázně
19°C (66°F) Český Krumlov18°C (64°F) Karlovy Vary
18°C (64°F) Harrachov17°C (63°F) Rokytnice nad Jizerou17°C (63°F) Špindlerův Mlýn17°C (63°F) Bucket list
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