Potenza climate — normals and trends
Potenza (Italy) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 12.4 °C and it receives 669 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 (22.0 °C on average) and the coldest is January (3.9 °C). Rainfall peaks in December.
Potenza averages 39 frost days, 18 hot days (≥ 30 °C) and 110 rainy days per year.
Potenza has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 53 to 25 per year over the period.
The hottest day of the period reached 38.3 °C (on 19 August 1946) and the coldest -17.9 °C (on 26 January 2006).
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
PotenzaBasilicate
- coords
- 40.64°, 15.81°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.4°C
Average daily high
17.0°C
Average daily low
8.2°C
Annual rainfall
669mm
Sunshine / day
9.7h
Mean relative humidity
74%
Average peak wind
13.4km/h
Seasonal range
18.1°C
Frost days (< 0 °C)
39 d/yr
Hot days (≥ 30 °C)
18 d/yr
Rainy days (≥ 1 mm)
110 d/yr
Annual snowfall
50.0 cm
Average feels-like high
15.5 °C
Average feels-like low
6.3 °C
Average peak gust
36.6 km/h
Tropical nights (≥ 20 °C)
6 d/yr
Solar radiation
15.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.43 · 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
38.3 °C
19 August 1946
Coldest day
-17.9 °C
26 January 2006
Wettest day
78 mm
1 December 2013
Windiest day
37.2 km/h
16 December 1962
Strongest gust
108.0 km/h
28 December 1999
Hottest feels-like
39.1 °C
5 August 2017
Coldest feels-like
-22.6 °C
26 January 2006
Snowiest day
27.9 cm
22 March 2018
Sunniest day
14.0 h
17 June 2019
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 | 9.8 °C | +2.4 °C | 126 mm | +56 mm |
| Feb | 9.9 °C | +1.4 °C | 41 mm | -23 mm |
| Mar | 13.2 °C | +2.0 °C | 75 mm | +6 mm |
| Apr | 15.6 °C | +0.8 °C | 54 mm | -13 mm |
| May | 19.2 °C | -0.4 °C | 56 mm | +3 mm |
| Jun | 28.8 °C | +4.6 °C | 13 mm | -28 mm |
| Jul | 29.4 °C | +2.1 °C | 10 mm | -18 mm |
| Aug | 28.3 °C | +0.8 °C | 36 mm | +9 mm |
| Sep | 25.5 °C | +2.1 °C | 22 mm | -24 mm |
| Oct | 16.7 °C | -1.6 °C | 79 mm | +17 mm |
| Nov | 13.5 °C | +0.6 °C | 86 mm | +15 mm |
| Dec | 10.9 °C | +2.1 °C | 31 mm | -40 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 Potenza?
Potenza has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 12.4 °C and it receives 669 mm of precipitation per year.
What is the hottest day ever recorded in Potenza?
The hottest day measured in Potenza between 1940 and 2025 was 19 August 1946, reaching 38.3 °C.
What is the coldest day in Potenza?
The coldest day measured in Potenza between 1940 and 2025 was 26 January 2006, at -17.9 °C.
Does it snow in Potenza?
Yes. Potenza gets on average 50.0 cm of snow per year and has around 39 frost days.
Has the climate of Potenza warmed?
Yes: Potenza warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Potenza?
The wettest day measured in Potenza between 1940 and 2025 was 1 December 2013, with 78 mm of rain in 24 hours.
What was the windiest day in Potenza?
The windiest day measured in Potenza between 1940 and 2025 was 16 December 1962, with winds reaching 37.2 km/h.
What is the warmest month in Potenza?
The warmest month in Potenza is August (22.0 °C on average); the coldest is January (3.9 °C).
How much does it rain in Potenza?
Potenza receives on average 669 mm of precipitation per year, spread over about 110 rainy days.
Is it sunny in Potenza?
Potenza gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.
What is the biggest single-day snowfall in Potenza?
The heaviest 24-hour snowfall measured in Potenza between 1940 and 2025 was 22 March 2018, with 27.9 cm.
Are there tropical nights in Potenza?
Yes: Potenza has on average 6 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Potenza?
In Potenza, between 1940 and 2025, the highest apparent temperature reached 39.1 °C on 5 August 2017, and the lowest was -22.6 °C on 26 January 2006.
Compare Potenza with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Potenza