September in Slănic averages 21°C (70°F) during the day and 10°C (50°F) at night. Quite a bit of rainfall is typical this month, with around 76 mm (3 in) on average. An umbrella is a good idea.
If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
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Pick a month to see the average temperature, rainfall and sunshine in Slănic - and find the best time to visit.
Find out more about the weather in Romania and which places have the best travel conditions in this month. See all of Romania in September →
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).
For Slănic in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
See the full Slănic climate overview or explore weather in Romania.
Where to go in September - average daytime high across popular destinations.
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