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.

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For a detailed overview over the year and the best time to visit Czech Republic, check out our Semily's climate page.

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).

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.

Cycling

9/10

Walking

9/10

Camping

4/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Czech Republic, check out our Semily's climate page.

More climate data for Semily

Temperature Rainfall Humidity

See the full Semily climate overview or explore weather in Czech Republic.