September · Romania
Best time to visit Sinaia in September Weather, crowds & prices
Weather in Sinaia in September
Average temperature 14°C, 61 mm of rain, about 12 days with 6+ hours of sunshine and 71% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
1.6/10
Ranked #11 of 12 months
- Avg temp
- 14°C
- Rainfall
- 61 mm
- Humidity
- 71%
- Days with 6h+ sun
- 12
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
September in Sinaia scores 1.6/10 for snow and ski travel - ranked #11 of 12. Expect around 14°C, 61 mm of rain, and roughly 12 days with 6+ hours of sunshine this month.
Sinaia climbs the Prahova valley beneath the Carpathians, with a royal castle, a monastery and mountain trails.
September in Sinaia — the hardest end of the year
Temperatures hover around 14°C (56°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 61 mm of rain this month — a flexible day or two helps — with about 12 days with 6+ hours of sunshine and 12.3 hours of daylight to work around it.
That is 1.6/10 on the same scale — 11th of 12 months, versus 9.1/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Expect low-season pricing, and crowds are light for this destination.
If your dates are flexible, January is materially better in Sinaia — 7.5 points higher on the same scale.
Frequently asked
- What is the weather like in Sinaia in September?
- In September, Sinaia averages 14°C, 61 mm of rain, and about 12 days with 6+ hours of sunshine. Its climate-comfort score is 1.6/10.
- Is September a good time to visit Sinaia?
- September earns a 1.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Sinaia in September?
- Expect about 61 mm of rain in September. Average humidity is 71% and there are about 12 days with 6+ hours of sunshine.
Curated in Sinaia
Tickets & experiences
Things to do in Sinaia
Sinaia, Romania. Live activities and tours from GetYourGuide, matched to this destination.