Romania in September: Weather, Crowds & What to Expect
Climate Map for September
Average temperature across Romania in September.
City Weather in September
| City | High | Low | Rain | UV | Feels |
|---|---|---|---|---|---|
| Bucharest | 24° | 10° | 45 mm | moderate | Cool |
| Iași | 22° | 10° | 52 mm | moderate | Cool |
| Constanţa | 23° | 14° | 37 mm | moderate | Mild |
| Cluj-Napoca | 20° | 9° | 44 mm | moderate | Cool |
| Braşov | 19° | 7° | 46 mm | moderate | Cool |
| Timişoara | 23° | 10° | 45 mm | moderate | Cool |
| Craiova | 25° | 12° | 40 mm | moderate | Mild |
High / low are average daily temperatures (°C). “Feels” reflects how hot or cold it feels, allowing for humidity.
Bucharest & the Wallachian Plain (Southern Romania)
September opens with lingering warmth and generally dry, pleasant days ideal for exploring the city on foot or taking day trips to nearby attractions like Snagov and Peles Castle. Morning fogs can form in the river valleys, giving atmospheric drives to the plains at dawn, while evenings turn cooler, so a light jacket is useful. The month is quieter after summer crowds making it one of the best shoulder-season windows.
Black Sea Coast & Dobrogea (Constanța, Mamaia, Danube Delta)
September begins with pleasantly warm days and fewer crowds; sea temperatures remain nice for swimming into early autumn. Migrant birds start to pass through the delta, and many boat operators return to calmer schedules making wildlife viewing excellent. Evenings cool earlier - a light jacket is handy - and accommodation deals often improve.
Transylvania Plateau & the Apuseni (Sibiu, Cluj, Brașov outskirts, Sighișoara)
September opens to crisp mornings and golden light, making it one of the most appealing months for photography and hiking. Daytime warmth lingers, but nights cool substantially, especially at elevation, and mushrooms appear in nearby woodlands - foragers are active. Expect fewer crowds than midsummer and bring layered clothing for fluctuating daytime temperatures and chilly evenings.
Romanian Carpathians & High Mountains (Făgăraș, Bucegi, Retezat, Piatra Craiului)
September opens with crisp mountain air and dramatically clear vistas, making it one of the best months for extended traverses and photography. Early autumn colours begin on lower slopes while higher pastures stay green, and tourist numbers fall. Nights grow cold; you’ll want a warm sleeping bag for refuges, and be mindful that some huts close in mid-autumn.
Moldavia, Bukovina & Maramureș (Iași, Suceava, wooden churches region)
September arrives with cooler mornings and lovely late-summer light - hiking and cultural visits are comfortable again while crowds thin. The chance of early autumn rain increases but dry spells remain common and apples begin to ripen in Maramureș. Layering for variable day-to-night temperatures is sensible, and harvest festivals make this an engaging travel month.
Banat & Western Romania (Timișoara, Caraș-Severin, Oradea and Crișana)
September transitions into cool, clear early autumn with orchards heavy with fruit and the harvest in full swing; colours begin to appear in higher woodlands. It’s an excellent month for food markets and vineyard visits, and the weather is pleasant for walking through historic town centres. Layering for changeable mornings and evenings is wise, and plan visits around local harvest events.