Piran Weather in January
January in Piran typically sees daytime highs of 10°C (50°F) and nighttime lows of 5°C (41°F). Rainfall is also possible this month, so it's worth packing an umbrella. It falls within the winter season.
Rainfall in Piran in January
Looking at the last 30 years, the data shows about 12 days with rain, averaging 85 mm (3.3 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Piran in January
Temperatures in Piran in January top out at 10°C (50°F) and drop to 5°C (41°F) overnight. The month of January belongs to the winter season. It stays cool throughout the day, so warm layers are a good idea from morning to evening. Nights drop to 5°C (41°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet. Expect the coolest temperatures of the year during January.
Sunshine in Piran in January
The city usually sees around 102 hours of sunlight, indicating a moderately sunny period.January in Piran has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Slovenia, check out our Piran's climate page.
Piran Temperature in January
Min Temperature
5°C (41°F)
Max Temperature
10°C (50°F)
Chance of Rain
40%
Precipitation
85 mm (3.3 in)
Rainy days
12 days
Humidity
67% *
Sunshine
102 hours *
Percentage Sunshine
*
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Piran typically stay consistent throughout January, with daily highs averaging around 10°C (50°F). Nights are cold, with lows around 1°C (34°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Piran in January
Browse day-by-day weather records for Piran spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Piran historical weather extremes in January
Based on 25 years of weather observations in Piran between 2000 and 2025, these are the recorded extremes.
- Piran recorded its highest January temperature of 18°C (64°F) on January 19, 2014.
- On January 24, 2006, Piran saw its coldest January day with temperatures maxing out at 1°C (34°F).
- The coldest night in January in Piran was on January 26, 2000, with a minimum of -10°C (14°F).
- The wettest January day on record brought 54 mm (2.1 in) of precipitation to Piran (January 8, 2001).
Best Places in Slovenia in January
Find out more about the weather in Slovenia and which places have the best travel conditions in this month. See all of Slovenia in January →
perfect weather
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tolerable
unpleasant
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What to Wear in Piran in January
We recommend to layer up for chilly conditions in Piran in January. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Piran in January
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 Slovenia, check out our Piran's climate page.
Temperature Rainfall Sunshine Humidity
See the full Piran climate overview or explore weather in Slovenia.
