Sinaia Temperature by Month
Sinaia in Prahova, Romania sees significant seasonal temperature differences, with daytime highs between 1°C (34°F) in January and 24°C (75°F) in August, averaging 13°C (55°F) annually. Explore the full monthly breakdown below.
Sinaia Monthly Temperatures
In Sinaia, temperatures can shift dramatically between warm in summer and very cold in winter. Nights follow the same pattern, with lows ranging from 13°C (55°F) in August to -7°C (19°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Sinaia by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Sinaia Temperatures: 1976-2026
Browse day-by-day temperature records for Sinaia spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Sinaia vs Romania
The map below shows the annual temperature across Romania. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Sinaia vs World: Temperature Compared
Sinaia's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
San Francisco, USA averages 19°C (66°F) annually, but with little seasonal variation — summers are often cool and foggy, winters mild.
Adelaide, Australia averages 21°C (70°F) a year, with warm summers, mild winters, and relatively low rainfall year-round.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
For cities and regions with significant elevation, altitude is one of the biggest factors shaping local temperatures. As a rule of thumb, temperatures fall by around 6°C for every 1,000 metres gained — so a city at 2,000 metres will typically be around 12°C cooler than a city at sea level in the same region. Higher ground also tends to see more dramatic day-to-night temperature swings, since thinner air loses heat faster after sunset.
For more on Sinaia's weather — including monthly rainfall, sunshine hours, and humidity — visit our Sinaia climate page.
