In Neptun, December brings low daytime temperatures around 8°C (46°F), with nights cooling to 3°C (37°F). Some rainfall is to be expected.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June, July, August and September typically offer the best weather for Neptun.
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Pick a month to see the average temperature, rainfall and sunshine in Neptun - and find the best time to visit.
49-year average (1976-2025)
Based on our historical records, temperatures in Neptun typically stay consistent throughout December, with daily highs averaging around 8°C (46°F). Nights are cold, with lows typically ranging from -2°C (28°F) to 2°C (36°F).
49-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Neptun spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on 28 years of weather observations (1997-2025), these are the most extreme conditions recorded in Neptun.
Find out more about the weather in Romania and which places have the best travel conditions in this month. See all of Romania in December →
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).
Dress warmly and in layers for your trip to Neptun 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.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Humidity
See the full Neptun climate overview or explore weather in Romania.
Where to go in December - average daytime high across popular destinations.
Eforie Nord
8°C (46°F) Constanţa8°C (46°F) Mamaia8°C (46°F) Timişoara
6°C (43°F) Bucharest5°C (41°F) Sibiu3°C (37°F) Braşov2°C (36°F) Cluj-Napoca3°C (37°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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