Oltu climate — normals and trends
Oltu (Republic of Türkiye) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 5.2 °C and it receives 655 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 August (17.0 °C on average) and the coldest is January (-8.4 °C). Rainfall peaks in May.
Oltu averages 164 frost days, 3 hot days (≥ 30 °C) and 136 rainy days per year.
Oltu has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 179 to 149 per year over the period.
The hottest day of the period reached 35.8 °C (on 15 August 2019) and the coldest -32.6 °C (on 27 January 2016).
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
OltuErzurum
- coords
- 40.54°, 41.99°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
5.2°C
Average daily high
10.9°C
Average daily low
0.2°C
Annual rainfall
655mm
Sunshine / day
9.6h
Mean relative humidity
72%
Average peak wind
8.4km/h
Seasonal range
25.4°C
Frost days (< 0 °C)
164 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
136 d/yr
Annual snowfall
155.2 cm
Average feels-like high
9.0 °C
Average feels-like low
-2.5 °C
Average peak gust
30.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
16.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.39 · 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
35.8 °C
15 August 2019
Coldest day
-32.6 °C
27 January 2016
Wettest day
38 mm
19 May 1984
Windiest day
27.6 km/h
23 April 2017
Strongest gust
103.0 km/h
23 April 2017
Hottest feels-like
35.5 °C
30 July 2000
Coldest feels-like
-37.0 °C
27 January 2016
Snowiest day
22.3 cm
15 October 1946
Sunniest day
14.4 h
2 July 2019
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 | 0.2 °C | +3.4 °C | 18 mm | -16 mm |
| Feb | -3.4 °C | -2.4 °C | 49 mm | +11 mm |
| Mar | 6.8 °C | +3.5 °C | 74 mm | +16 mm |
| Apr | 11.4 °C | +1.1 °C | 146 mm | +64 mm |
| May | 18.2 °C | +2.4 °C | 123 mm | +12 mm |
| Jun | 20.5 °C | +0.9 °C | 41 mm | -43 mm |
| Jul | 25.8 °C | +3.1 °C | 53 mm | -0 mm |
| Aug | 29.0 °C | +5.5 °C | 10 mm | -31 mm |
| Sep | 20.8 °C | +0.9 °C | 42 mm | +8 mm |
| Oct | 15.9 °C | +2.1 °C | 43 mm | -3 mm |
| Nov | 12.2 °C | +5.8 °C | 7 mm | -33 mm |
| Dec | 2.4 °C | +3.0 °C | 47 mm | +12 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 Oltu?
Oltu has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 5.2 °C and it receives 655 mm of precipitation per year.
What is the hottest day ever recorded in Oltu?
The hottest day measured in Oltu between 1940 and 2025 was 15 August 2019, reaching 35.8 °C.
What is the coldest day in Oltu?
The coldest day measured in Oltu between 1940 and 2025 was 27 January 2016, at -32.6 °C.
Does it snow in Oltu?
Yes. Oltu gets on average 155.2 cm of snow per year and has around 164 frost days.
Has the climate of Oltu warmed?
Yes: Oltu warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Oltu?
The wettest day measured in Oltu between 1940 and 2025 was 19 May 1984, with 38 mm of rain in 24 hours.
What was the windiest day in Oltu?
The windiest day measured in Oltu between 1940 and 2025 was 23 April 2017, with winds reaching 27.6 km/h.
What is the warmest month in Oltu?
The warmest month in Oltu is August (17.0 °C on average); the coldest is January (-8.4 °C).
How much does it rain in Oltu?
Oltu receives on average 655 mm of precipitation per year, spread over about 136 rainy days.
Is it sunny in Oltu?
Oltu gets on average 9.6 hours of sunshine per day, roughly 3,504 hours per year over 1940-2025.
What is the biggest single-day snowfall in Oltu?
The heaviest 24-hour snowfall measured in Oltu between 1940 and 2025 was 15 October 1946, with 22.3 cm.
Are there tropical nights in Oltu?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Oltu.
What was the most extreme apparent temperature in Oltu?
In Oltu, between 1940 and 2025, the highest apparent temperature reached 35.5 °C on 30 July 2000, and the lowest was -37.0 °C on 27 January 2016.
Compare Oltu with another city
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Nearby cities
The climate around Oltu