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Has the climate in Silistra changed?

Silistra has warmed about 4.5°F since 1971.

About 0.8°F per decade, measured from Silistra's official daily weather records, 1971–2025. Individual years still bounce around — some recent ones came in cool — but the long-term line has clearly risen.

Is that a lot? Silistra's warming is broadly in line with other cities in Bulgaria — neither unusually fast nor unusually slow.

What has actually changed

Each card compares the 1970s (the first ten years of the record) with recent years (the last ten) — the same span the headline and the chart use.

Freezing nights
21 fewer nights
1970s
96 / yr
Recent
75 / yr
Milder winters — fewer frosts
Average temperature
+3.1°F
1970s
52.8°F
Recent
55.9°F
A steady upward drift
Hot days above 90°F
27 more days
1970s
17 / yr
Recent
44 / yr
More days of serious heat
Rainy days
6 more days
1970s
96 / yr
Recent
102 / yr
Wetter on average

Silistra's temperature, year by year

Average temperature for each year from 1971 to 2025.

50°52°54°56°58°60°1971: 53.1°F1972: 53.5°F1973: 52.5°F1974: 52.8°F1975: 54.2°F1976: 51.6°F1977: 53.6°F1978: 52.2°F1979: 53.9°F1980: 51.5°F1981: 53.3°F1982: 53.0°F1983: 53.5°F1984: 52.6°F1985: 51.2°F1986: 53.0°F1987: 51.6°F1988: 53.0°F1989: 54.5°F1990: 54.9°F1991: 52.1°F1992: 53.7°F1993: 52.0°F1994: 55.2°F1995: 53.4°F1996: 52.1°F1997: 52.2°F1998: 54.0°F1999: 55.8°F2000: 55.5°F2001: 55.2°F2002: 54.8°F2003: 53.2°F2004: 54.3°F2005: 53.8°F2006: 54.2°F2007: 56.6°F2008: 55.4°F2009: 55.5°F2010: 54.8°F2011: 52.9°F2012: 55.3°F2013: 55.7°F2014: 54.7°F2015: 56.0°F2016: 55.7°F2017: 55.2°F2018: 55.7°F2019: 57.8°F2020: 57.7°F2021: 55.3°F2022: 57.1°F2023: 58.1°F2024: 56.3°F2025: 56.5°Flong-term trend1971198019902000201020202025
a warmer-than-average year a cooler-than-average year

Each bar is one year. Most recent years sit above the older ones. Some recent years still came in cool — warming is a slope, not a straight climb.

In day-to-day terms, that long-term shift shows up as about 9 fewer freezing nights a year and about 14 more days above 90°F compared with the 1970s.

When in the year the change shows up

How much warmer each month is now than in the 1970s. Useful if you garden or care about a particular season — otherwise the headline above already has the answer.

0.0°+0.5°+1.0°+1.5°+2.0°+2.5°+3.0°January: +0.6°F+0.6JFebruary: +1.7°F+1.7FMarch: +1.9°F+1.9MApril: +0.6°F+0.6AMay: +1.0°F+1.0MJune: +1.6°F+1.6JJuly: +2.2°F+2.2JAugust: +3.0°F+3.0ASeptember: +1.5°F+1.5SOctober: +1.2°F+1.2ONovember: +2.4°F+2.4NDecember: +0.2°F+0.2D

August has warmed the most — about 3.0°F. The warming runs across the whole year, not just one season.

Methodology & sources

Temperature — 1991–2020 normals computed from 30 years of daily observations at Calarasi, a weather station, about 11 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →