Biella climate — normals and trends
Biella (Italy) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.1 °C and it receives 1,459 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 (21.0 °C on average) and the coldest is January (1.2 °C). Rainfall peaks in May.
Biella averages 67 frost days, 4 hot days (≥ 30 °C) and 151 rainy days per year.
Biella has warmed by +2.9 °C between 1940 and 2025, or +0.34 °C per decade. This trend is statistically significant.
The number of frost days there went from about 96 to 38 per year over the period.
The hottest day of the period reached 35.8 °C (on 11 August 2003) and the coldest -20.7 °C (on 9 January 1945).
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
BiellaPiedmont
- coords
- 45.56°, 8.06°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.1°C
Average daily high
15.1°C
Average daily low
7.2°C
Annual rainfall
1,459mm
Sunshine / day
9.3h
Mean relative humidity
71%
Average peak wind
6.8km/h
Seasonal range
19.8°C
Frost days (< 0 °C)
67 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
151 d/yr
Annual snowfall
62.4 cm
Average feels-like high
14.3 °C
Average feels-like low
5.4 °C
Average peak gust
20.1 km/h
Tropical nights (≥ 20 °C)
4 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.9 °C
since 1940
+0.3 °C per decade · r² = 0.72 · 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
11 August 2003
Coldest day
-20.7 °C
9 January 1945
Wettest day
178 mm
5 November 1994
Windiest day
25.9 km/h
29 October 2018
Strongest gust
81.0 km/h
29 October 2018
Hottest feels-like
39.1 °C
27 June 2019
Coldest feels-like
-25.8 °C
9 January 1945
Snowiest day
32.4 cm
30 January 1986
Sunniest day
15.0 h
27 May 1940
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 | 6.8 °C | +1.9 °C | 93 mm | +26 mm |
| Feb | 7.9 °C | +1.0 °C | 64 mm | -16 mm |
| Mar | 12.4 °C | +1.3 °C | 145 mm | +29 mm |
| Apr | 16.6 °C | +1.8 °C | 329 mm | +173 mm |
| May | 19.6 °C | +0.7 °C | 195 mm | +17 mm |
| Jun | 26.6 °C | +3.9 °C | 110 mm | -26 mm |
| Jul | 25.8 °C | +0.5 °C | 92 mm | +0 mm |
| Aug | 26.1 °C | +1.4 °C | 171 mm | +68 mm |
| Sep | 20.6 °C | -0.2 °C | 159 mm | +27 mm |
| Oct | 16.1 °C | +0.8 °C | 68 mm | -109 mm |
| Nov | 10.9 °C | +1.3 °C | 55 mm | -92 mm |
| Dec | 8.8 °C | +3.0 °C | 104 mm | +27 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 Biella?
Biella has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.1 °C and it receives 1,459 mm of precipitation per year.
What is the hottest day ever recorded in Biella?
The hottest day measured in Biella between 1940 and 2025 was 11 August 2003, reaching 35.8 °C.
What is the coldest day in Biella?
The coldest day measured in Biella between 1940 and 2025 was 9 January 1945, at -20.7 °C.
Does it snow in Biella?
Yes. Biella gets on average 62.4 cm of snow per year and has around 67 frost days.
Has the climate of Biella warmed?
Yes: Biella warmed by +2.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Biella?
The wettest day measured in Biella between 1940 and 2025 was 5 November 1994, with 178 mm of rain in 24 hours.
What was the windiest day in Biella?
The windiest day measured in Biella between 1940 and 2025 was 29 October 2018, with winds reaching 25.9 km/h.
What is the warmest month in Biella?
The warmest month in Biella is July (21.0 °C on average); the coldest is January (1.2 °C).
How much does it rain in Biella?
Biella receives on average 1,459 mm of precipitation per year, spread over about 151 rainy days.
Is it sunny in Biella?
Biella gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.
What is the biggest single-day snowfall in Biella?
The heaviest 24-hour snowfall measured in Biella between 1940 and 2025 was 30 January 1986, with 32.4 cm.
Are there tropical nights in Biella?
Yes: Biella has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Biella?
In Biella, between 1940 and 2025, the highest apparent temperature reached 39.1 °C on 27 June 2019, and the lowest was -25.8 °C on 9 January 1945.
Compare Biella with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Biella