Janske Lazne Weather in December
In Janske Lazne, December brings very low daytime temperatures around 2°C (36°F), with nights cooling to -4°C (25°F). Expect quite a bit of snow/rainfall this month.
Rainfall in Janske Lazne in December
You can typically expect 16 days of snow/rain this month, averaging around 68 mm (2.7 in). Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Janske Lazne in December
In December, expect very low temperatures in Janske Lazne, with highs of 2°C (36°F) and lows of -4°C (25°F) at night. December is in the winter season. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. At -4°C (25°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. You will probably experience very cold weather in this month, so dressing warmly is vital. Be sure to prepare for the chill with the right clothing.
Sunshine in Janske Lazne in December
The area sees fewer sunny days, with a projection of about 66 hours of sunshine. This reduced sunlight makes it ideal for those who prefer overcast conditions over bright sunny days.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Janske Lazne.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Czech Republic, check out our Janske Lazne's climate page.
Janske Lazne Temperature in December
Min Temperature
-4°C (25°F)
Max Temperature
2°C (36°F)
Chance of Rain
53%
Precipitation
68 mm (2.7 in)
Rainy days
16 days
Humidity
84% *
Sunshine
66 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Janske Lazne typically stay consistent throughout December, with daily highs averaging around 2°C (36°F). Nights are very cold, with lows typically ranging from -6°C (21°F) to -4°C (25°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Janske Lazne in December
Browse day-by-day weather records for Janske Lazne spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Janske Lazne historical weather extremes in December
Our historical data for Janske Lazne spans 1976 to 2025, revealing these weather extremes.
- On December 9, 2025, temperatures climbed to 15°C (59°F), marking the warmest December day on record.
- The coldest night in December in Janske Lazne was on December 27, 1996, with a minimum of -20°C (-4°F).
Best Places in Czech Republic in December
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 December →
perfect weather
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tolerable
unpleasant
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What to Wear in Janske Lazne in December
Dress warmly and in layers for your trip to Janske Lazne in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Wet weather is likely, so pack waterproof gear for multiple rainy days. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Janske Lazne in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Czech Republic, check out our Janske Lazne's climate page.
Temperature Rainfall Sunshine Humidity
See the full Janske Lazne climate overview or explore weather in Czech Republic.
