Reni climate — normals and trends
Reni (Ukraine) has a hot-summer humid continental climate (Dfa) under the Köppen-Geiger classification. Its mean annual temperature is 11.5 °C and it receives 462 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 (23.5 °C on average) and the coldest is January (-1.5 °C). Rainfall peaks in June.
Reni averages 80 frost days, 28 hot days (≥ 30 °C) and 81 rainy days per year.
Reni has warmed by +2.1 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 97 to 63 per year over the period.
The hottest day of the period reached 39.8 °C (on 23 July 2007) and the coldest -26.8 °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
ReniOdesa
- coords
- 45.45°, 28.28°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.5°C
Average daily high
15.7°C
Average daily low
7.7°C
Annual rainfall
462mm
Sunshine / day
8.8h
Mean relative humidity
72%
Average peak wind
16.4km/h
Seasonal range
25.0°C
Frost days (< 0 °C)
80 d/yr
Hot days (≥ 30 °C)
28 d/yr
Rainy days (≥ 1 mm)
81 d/yr
Annual snowfall
39.8 cm
Average feels-like high
13.8 °C
Average feels-like low
5.3 °C
Average peak gust
32.4 km/h
Tropical nights (≥ 20 °C)
21 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.2 °C per decade · r² = 0.35 · 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
39.8 °C
23 July 2007
Coldest day
-26.8 °C
25 January 1942
Wettest day
75 mm
4 October 1998
Windiest day
47.3 km/h
26 November 2023
Strongest gust
84.6 km/h
26 November 2023
Hottest feels-like
42.2 °C
7 August 2012
Coldest feels-like
-32.4 °C
25 January 1942
Snowiest day
22.4 cm
29 December 2014
Sunniest day
15.0 h
18 June 2012
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 8.3 °C | +6.8 °C | 13 mm | -19 mm |
| Feb | 3.0 °C | -0.8 °C | 5 mm | -24 mm |
| Mar | 15.0 °C | +5.9 °C | 25 mm | -7 mm |
| Apr | 17.2 °C | +1.1 °C | 17 mm | -25 mm |
| May | 20.5 °C | -1.4 °C | 63 mm | +11 mm |
| Jun | 29.0 °C | +3.0 °C | 8 mm | -52 mm |
| Jul | 31.9 °C | +3.6 °C | 58 mm | +15 mm |
| Aug | 30.5 °C | +2.3 °C | 4 mm | -31 mm |
| Sep | 25.2 °C | +1.8 °C | 32 mm | -2 mm |
| Oct | 15.8 °C | -0.8 °C | 87 mm | +55 mm |
| Nov | 12.6 °C | +3.1 °C | 67 mm | +30 mm |
| Dec | 5.7 °C | +2.0 °C | 7 mm | -28 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 Reni?
Reni has a hot-summer humid continental climate (Köppen Dfa). Over 1940-2025, the average annual temperature is 11.5 °C and it receives 462 mm of precipitation per year.
What is the hottest day ever recorded in Reni?
The hottest day measured in Reni between 1940 and 2025 was 23 July 2007, reaching 39.8 °C.
What is the coldest day in Reni?
The coldest day measured in Reni between 1940 and 2025 was 25 January 1942, at -26.8 °C.
Does it snow in Reni?
Yes. Reni gets on average 39.8 cm of snow per year and has around 80 frost days.
Has the climate of Reni warmed?
Yes: Reni warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Reni?
The wettest day measured in Reni between 1940 and 2025 was 4 October 1998, with 75 mm of rain in 24 hours.
What was the windiest day in Reni?
The windiest day measured in Reni between 1940 and 2025 was 26 November 2023, with winds reaching 47.3 km/h.
What is the warmest month in Reni?
The warmest month in Reni is July (23.5 °C on average); the coldest is January (-1.5 °C).
How much does it rain in Reni?
Reni receives on average 462 mm of precipitation per year, spread over about 81 rainy days.
Is it sunny in Reni?
Reni gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Reni?
The heaviest 24-hour snowfall measured in Reni between 1940 and 2025 was 29 December 2014, with 22.4 cm.
Are there tropical nights in Reni?
Yes: Reni has on average 21 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Reni?
In Reni, between 1940 and 2025, the highest apparent temperature reached 42.2 °C on 7 August 2012, and the lowest was -32.4 °C on 25 January 1942.
Compare Reni with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Reni