Aytos climate — normals and trends
Aytos (Bulgaria) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.9 °C and it receives 646 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (22.4 °C on average) and the coldest is January (0.8 °C). Rainfall peaks in June.
Aytos averages 66 frost days, 16 hot days (≥ 30 °C) and 102 rainy days per year.
Aytos has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 81 to 51 per year over the period.
The hottest day of the period reached 41.1 °C (on 20 August 1945) and the coldest -27.7 °C (on 25 January 1942).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
AytosBurgas
- coords
- 42.70°, 27.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.9°C
Average daily high
16.4°C
Average daily low
7.8°C
Annual rainfall
646mm
Sunshine / day
9.2h
Mean relative humidity
76%
Average peak wind
15.3km/h
Seasonal range
21.6°C
Frost days (< 0 °C)
66 d/yr
Hot days (≥ 30 °C)
16 d/yr
Rainy days (≥ 1 mm)
102 d/yr
Annual snowfall
50.4 cm
Average feels-like high
15.1 °C
Average feels-like low
5.9 °C
Average peak gust
34.2 km/h
Tropical nights (≥ 20 °C)
8 d/yr
Solar radiation
14.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.42 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
41.1 °C
20 August 1945
Coldest day
-27.7 °C
25 January 1942
Wettest day
122 mm
4 September 1999
Windiest day
45.3 km/h
1 January 1971
Strongest gust
103.0 km/h
27 February 1989
Hottest feels-like
42.6 °C
5 July 2000
Coldest feels-like
-32.3 °C
25 January 1942
Snowiest day
27.7 cm
5 February 1998
Sunniest day
14.7 h
24 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 9.5 °C | +5.1 °C | 29 mm | -22 mm |
| Feb | 3.8 °C | -2.8 °C | 54 mm | +5 mm |
| Mar | 15.1 °C | +5.0 °C | 38 mm | -14 mm |
| Apr | 14.4 °C | -1.3 °C | 58 mm | -4 mm |
| May | 20.1 °C | -0.6 °C | 99 mm | +27 mm |
| Jun | 27.4 °C | +2.4 °C | 12 mm | -63 mm |
| Jul | 30.7 °C | +3.1 °C | 10 mm | -42 mm |
| Aug | 28.8 °C | +1.1 °C | 27 mm | -9 mm |
| Sep | 24.7 °C | +1.1 °C | 18 mm | -21 mm |
| Oct | 16.9 °C | -0.7 °C | 158 mm | +109 mm |
| Nov | 15.4 °C | +3.8 °C | 65 mm | +11 mm |
| Dec | 8.3 °C | +1.9 °C | 31 mm | -27 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Aytos?
Aytos has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 11.9 °C and it receives 646 mm of precipitation per year.
What is the hottest day ever recorded in Aytos?
The hottest day measured in Aytos between 1940 and 2025 was 20 August 1945, reaching 41.1 °C.
What is the coldest day in Aytos?
The coldest day measured in Aytos between 1940 and 2025 was 25 January 1942, at -27.7 °C.
Does it snow in Aytos?
Yes. Aytos gets on average 50.4 cm of snow per year and has around 66 frost days.
Has the climate of Aytos warmed?
Yes: Aytos warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Aytos?
The wettest day measured in Aytos between 1940 and 2025 was 4 September 1999, with 122 mm of rain in 24 hours.
What was the windiest day in Aytos?
The windiest day measured in Aytos between 1940 and 2025 was 1 January 1971, with winds reaching 45.3 km/h.
What is the warmest month in Aytos?
The warmest month in Aytos is July (22.4 °C on average); the coldest is January (0.8 °C).
How much does it rain in Aytos?
Aytos receives on average 646 mm of precipitation per year, spread over about 102 rainy days.
Is it sunny in Aytos?
Aytos gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.
What is the biggest single-day snowfall in Aytos?
The heaviest 24-hour snowfall measured in Aytos between 1940 and 2025 was 5 February 1998, with 27.7 cm.
Are there tropical nights in Aytos?
Yes: Aytos has on average 8 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Aytos?
In Aytos, between 1940 and 2025, the highest apparent temperature reached 42.6 °C on 5 July 2000, and the lowest was -32.3 °C on 25 January 1942.
Compare Aytos with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Aytos