Issoire climate — normals and trends
Issoire (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.2 °C and it receives 809 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 (17.8 °C on average) and the coldest is January (1.2 °C). Rainfall peaks in May.
Issoire averages 83 frost days, 6 hot days (≥ 30 °C) and 143 rainy days per year.
Issoire has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 99 to 67 per year over the period.
The hottest day of the period reached 37.1 °C (on 27 June 2019) and the coldest -23.0 °C (on 5 February 1963).
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
IssoireRhône-Alpes
- coords
- 45.54°, 3.25°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.2°C
Average daily high
13.7°C
Average daily low
4.9°C
Annual rainfall
809mm
Sunshine / day
8.6h
Mean relative humidity
77%
Average peak wind
14.3km/h
Seasonal range
16.6°C
Frost days (< 0 °C)
83 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
143 d/yr
Annual snowfall
57.9 cm
Average feels-like high
11.6 °C
Average feels-like low
2.4 °C
Average peak gust
34.4 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.55 · 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
37.1 °C
27 June 2019
Coldest day
-23.0 °C
5 February 1963
Wettest day
68 mm
12 June 2020
Windiest day
51.6 km/h
28 December 1999
Strongest gust
122.8 km/h
27 December 1999
Hottest feels-like
39.1 °C
23 August 2023
Coldest feels-like
-28.0 °C
5 February 1963
Snowiest day
30.0 cm
14 December 2008
Sunniest day
15.1 h
24 June 1947
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 | 7.7 °C | +3.1 °C | 60 mm | +3 mm |
| Feb | 9.7 °C | +3.5 °C | 40 mm | -13 mm |
| Mar | 10.4 °C | +0.6 °C | 80 mm | +22 mm |
| Apr | 15.7 °C | +2.9 °C | 72 mm | -1 mm |
| May | 18.3 °C | +1.6 °C | 67 mm | -20 mm |
| Jun | 26.7 °C | +6.2 °C | 75 mm | +1 mm |
| Jul | 24.7 °C | +1.6 °C | 39 mm | -23 mm |
| Aug | 27.2 °C | +4.3 °C | 78 mm | +5 mm |
| Sep | 19.3 °C | -0.2 °C | 138 mm | +63 mm |
| Oct | 15.4 °C | +0.7 °C | 57 mm | -12 mm |
| Nov | 10.1 °C | +1.5 °C | 83 mm | +16 mm |
| Dec | 8.6 °C | +3.2 °C | 62 mm | -1 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 Issoire?
Issoire has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.2 °C and it receives 809 mm of precipitation per year.
What is the hottest day ever recorded in Issoire?
The hottest day measured in Issoire between 1940 and 2025 was 27 June 2019, reaching 37.1 °C.
What is the coldest day in Issoire?
The coldest day measured in Issoire between 1940 and 2025 was 5 February 1963, at -23.0 °C.
Does it snow in Issoire?
Yes. Issoire gets on average 57.9 cm of snow per year and has around 83 frost days.
Has the climate of Issoire warmed?
Yes: Issoire warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Issoire?
The wettest day measured in Issoire between 1940 and 2025 was 12 June 2020, with 68 mm of rain in 24 hours.
What was the windiest day in Issoire?
The windiest day measured in Issoire between 1940 and 2025 was 28 December 1999, with winds reaching 51.6 km/h.
What is the warmest month in Issoire?
The warmest month in Issoire is July (17.8 °C on average); the coldest is January (1.2 °C).
How much does it rain in Issoire?
Issoire receives on average 809 mm of precipitation per year, spread over about 143 rainy days.
Is it sunny in Issoire?
Issoire gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Issoire?
The heaviest 24-hour snowfall measured in Issoire between 1940 and 2025 was 14 December 2008, with 30.0 cm.
Are there tropical nights in Issoire?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Issoire.
What was the most extreme apparent temperature in Issoire?
In Issoire, between 1940 and 2025, the highest apparent temperature reached 39.1 °C on 23 August 2023, and the lowest was -28.0 °C on 5 February 1963.
Compare Issoire with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Issoire