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Mielno Weather in December

Thinking of visiting Mielno in December? Expect low temperatures reaching 5°C (41°F) during the day, dropping to 1°C (34°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Mielno in December

You can typically expect 18 days of rain this month, averaging around 76 mm (3 in). Expect plenty of grey, overcast days rather than intense storms. The rain rarely amounts to much on any given day.

Temperature in Mielno in December

December in Mielno brings low temperatures, with highs of 5°C (41°F) and nights around 1°C (34°F). During December, you'll experience the winter season. Temperatures remain on the cold side all day. A proper warm jacket is worth having, not just for evenings. Nights fall to 1°C (34°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Mielno in December

This month is characterized by fewer sunny days, with about 27 hours of sunshine. It's great for those who appreciate cooler, less sunny days.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Mielno. Our weather planner can help you explore destinations with more pleasant weather conditions.

Select a Month

Check the conditions for any month of the year.

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

Mielno Temperature in December

Min TemperatureMin Temperature 1°C (34°F)  
Max TemperatureMax Temperature 5°C (41°F)  
Chance of RainChance of Rain 60%  
PrecipitationPrecipitation 76 mm (3 in)  
Rainy daysRainy days 18 days  
SunshineSunshine 27 hours *  
Percentage SunshinePercentage Sunshine *  
* Data from: Koszalin, Poland (11 KM, 6 Miles).

Daily Historical Temperatures

49-year average (1976-2025)

Based on our historical records, temperatures in Mielno typically stay consistent throughout December, with daily highs averaging around 5°C (41°F). Nights are very cold, with lows typically ranging from -1°C (30°F) to 1°C (34°F).

Average temperatures in December

Daily Historical Precipitation

49-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 Mielno in December

Browse day-by-day weather records for Mielno spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Mielno historical weather extremes in December

Based on 43 years of weather observations (1982-2025), these are the most extreme conditions recorded in Mielno.

  • On December 6, 2006, temperatures climbed to 13°C (55°F), marking the warmest December day on record.
  • The lowest overnight temperature recorded in December was -17°C (1°F) (December 20, 2009).
  • The wettest day in December Mielno was on December 12, 2008 with 23 mm (0.9 in) of precipitation.

Best Places in Poland in December

Find out more about the weather in Poland and which places have the best travel conditions in this month. See all of Poland in December →

Map not visible? Whoops sorry! Please refresh the page.
Legend 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 Mielno in December

Dress warmly and in layers for your trip to Mielno 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. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.

What To Do in Mielno in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming
4/10
Cycling
3/10
Walking
3/10
Camping
4/10
Outdoor sports
3/10

Select a Month

Check the conditions for any month of the year.

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

More climate data for Mielno