Ostuni climate — normals and trends
Ostuni (Italy) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.6 °C and it receives 606 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 (25.2 °C on average) and the coldest is January (9.4 °C). Rainfall peaks in November.
Ostuni averages 0 frost days, 14 hot days (≥ 30 °C) and 91 rainy days per year.
Ostuni has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.
The hottest day of the period reached 39.1 °C (on 25 July 2023) and the coldest -1.5 °C (on 30 December 1941).
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
OstuniApulia
- coords
- 40.73°, 17.58°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.6°C
Average daily high
19.2°C
Average daily low
14.3°C
Annual rainfall
606mm
Sunshine / day
10.5h
Mean relative humidity
74%
Average peak wind
21.1km/h
Seasonal range
15.8°C
Frost days (< 0 °C)
0 d/yr
Hot days (≥ 30 °C)
14 d/yr
Rainy days (≥ 1 mm)
91 d/yr
Annual snowfall
2.2 cm
Average feels-like high
18.3 °C
Average feels-like low
12.7 °C
Average peak gust
35.5 km/h
Tropical nights (≥ 20 °C)
82 d/yr
Solar radiation
16.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.1 °C
since 1940
+0.1 °C per decade · r² = 0.33 · 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
39.1 °C
25 July 2023
Coldest day
-1.5 °C
30 December 1941
Wettest day
76 mm
6 November 1943
Windiest day
60.5 km/h
31 January 1983
Strongest gust
108.7 km/h
12 November 2019
Hottest feels-like
40.5 °C
21 July 2023
Coldest feels-like
-10.4 °C
21 February 1940
Snowiest day
15.3 cm
2 January 1993
Sunniest day
14.2 h
15 June 2009
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 | 13.5 °C | +2.0 °C | 104 mm | +36 mm |
| Feb | 12.9 °C | +0.8 °C | 51 mm | -11 mm |
| Mar | 15.0 °C | +1.2 °C | 80 mm | +15 mm |
| Apr | 17.1 °C | +0.5 °C | 34 mm | -14 mm |
| May | 20.9 °C | +0.1 °C | 18 mm | -16 mm |
| Jun | 27.8 °C | +2.7 °C | 2 mm | -20 mm |
| Jul | 29.3 °C | +1.5 °C | 4 mm | -10 mm |
| Aug | 28.1 °C | 0.0 °C | 14 mm | -6 mm |
| Sep | 26.1 °C | +1.3 °C | 7 mm | -39 mm |
| Oct | 19.2 °C | -1.3 °C | 116 mm | +42 mm |
| Nov | 16.6 °C | +0.4 °C | 77 mm | -7 mm |
| Dec | 14.0 °C | +1.2 °C | 82 mm | +10 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 Ostuni?
Ostuni has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.6 °C and it receives 606 mm of precipitation per year.
What is the hottest day ever recorded in Ostuni?
The hottest day measured in Ostuni between 1940 and 2025 was 25 July 2023, reaching 39.1 °C.
What is the coldest day in Ostuni?
The coldest day measured in Ostuni between 1940 and 2025 was 30 December 1941, at -1.5 °C.
Does it snow in Ostuni?
Yes. Ostuni gets on average 2.2 cm of snow per year and has around 0 frost days.
Has the climate of Ostuni warmed?
Yes: Ostuni warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Ostuni?
The wettest day measured in Ostuni between 1940 and 2025 was 6 November 1943, with 76 mm of rain in 24 hours.
What was the windiest day in Ostuni?
The windiest day measured in Ostuni between 1940 and 2025 was 31 January 1983, with winds reaching 60.5 km/h.
What is the warmest month in Ostuni?
The warmest month in Ostuni is August (25.2 °C on average); the coldest is January (9.4 °C).
How much does it rain in Ostuni?
Ostuni receives on average 606 mm of precipitation per year, spread over about 91 rainy days.
Is it sunny in Ostuni?
Ostuni gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.
What is the biggest single-day snowfall in Ostuni?
The heaviest 24-hour snowfall measured in Ostuni between 1940 and 2025 was 2 January 1993, with 15.3 cm.
Are there tropical nights in Ostuni?
Yes: Ostuni has on average 82 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Ostuni?
In Ostuni, between 1940 and 2025, the highest apparent temperature reached 40.5 °C on 21 July 2023, and the lowest was -10.4 °C on 21 February 1940.
Compare Ostuni with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Ostuni