Subiaco climate — normals and trends
Subiaco (Italy) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 12.2 °C and it receives 1,138 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 (21.5 °C on average) and the coldest is January (3.7 °C). Rainfall peaks in November.
Subiaco averages 45 frost days, 12 hot days (≥ 30 °C) and 125 rainy days per year.
Subiaco has warmed by +1.9 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 61 to 29 per year over the period.
The hottest day of the period reached 36.8 °C (on 2 August 2017) and the coldest -20.7 °C (on 28 February 2018).
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
SubiacoLazio
- coords
- 41.93°, 13.09°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
12.2°C
Average daily high
16.9°C
Average daily low
7.8°C
Annual rainfall
1,138mm
Sunshine / day
9.8h
Mean relative humidity
75%
Average peak wind
10.3km/h
Seasonal range
17.8°C
Frost days (< 0 °C)
45 d/yr
Hot days (≥ 30 °C)
12 d/yr
Rainy days (≥ 1 mm)
125 d/yr
Annual snowfall
28.5 cm
Average feels-like high
16.0 °C
Average feels-like low
6.1 °C
Average peak gust
33.2 km/h
Tropical nights (≥ 20 °C)
3 d/yr
Solar radiation
15.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.47 · 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
36.8 °C
2 August 2017
Coldest day
-20.7 °C
28 February 2018
Wettest day
81 mm
26 February 1984
Windiest day
32.5 km/h
29 October 2018
Strongest gust
130.3 km/h
4 November 1966
Hottest feels-like
37.7 °C
11 August 2024
Coldest feels-like
-26.1 °C
28 February 2018
Snowiest day
27.7 cm
11 March 1956
Sunniest day
14.3 h
26 June 2025
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 | 10.4 °C | +2.6 °C | 71 mm | -22 mm |
| Feb | 11.6 °C | +2.6 °C | 70 mm | -31 mm |
| Mar | 14.1 °C | +2.2 °C | 170 mm | +68 mm |
| Apr | 17.6 °C | +2.6 °C | 151 mm | +38 mm |
| May | 20.2 °C | +1.0 °C | 109 mm | +8 mm |
| Jun | 29.0 °C | +5.7 °C | 23 mm | -41 mm |
| Jul | 29.0 °C | +2.2 °C | 25 mm | -11 mm |
| Aug | 28.6 °C | +1.6 °C | 69 mm | +21 mm |
| Sep | 24.7 °C | +1.8 °C | 110 mm | +23 mm |
| Oct | 18.6 °C | +0.5 °C | 104 mm | -18 mm |
| Nov | 14.2 °C | +1.5 °C | 111 mm | -38 mm |
| Dec | 11.9 °C | +3.0 °C | 45 mm | -78 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 Subiaco?
Subiaco has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 12.2 °C and it receives 1,138 mm of precipitation per year.
What is the hottest day ever recorded in Subiaco?
The hottest day measured in Subiaco between 1940 and 2025 was 2 August 2017, reaching 36.8 °C.
What is the coldest day in Subiaco?
The coldest day measured in Subiaco between 1940 and 2025 was 28 February 2018, at -20.7 °C.
Does it snow in Subiaco?
Yes. Subiaco gets on average 28.5 cm of snow per year and has around 45 frost days.
Has the climate of Subiaco warmed?
Yes: Subiaco warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Subiaco?
The wettest day measured in Subiaco between 1940 and 2025 was 26 February 1984, with 81 mm of rain in 24 hours.
What was the windiest day in Subiaco?
The windiest day measured in Subiaco between 1940 and 2025 was 29 October 2018, with winds reaching 32.5 km/h.
What is the warmest month in Subiaco?
The warmest month in Subiaco is August (21.5 °C on average); the coldest is January (3.7 °C).
How much does it rain in Subiaco?
Subiaco receives on average 1,138 mm of precipitation per year, spread over about 125 rainy days.
Is it sunny in Subiaco?
Subiaco gets on average 9.8 hours of sunshine per day, roughly 3,577 hours per year over 1940-2025.
What is the biggest single-day snowfall in Subiaco?
The heaviest 24-hour snowfall measured in Subiaco between 1940 and 2025 was 11 March 1956, with 27.7 cm.
Are there tropical nights in Subiaco?
Yes: Subiaco has on average 3 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Subiaco?
In Subiaco, between 1940 and 2025, the highest apparent temperature reached 37.7 °C on 11 August 2024, and the lowest was -26.1 °C on 28 February 2018.
Compare Subiaco with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Subiaco