Saint-Lys climate — normals and trends
Saint-Lys (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 13.2 °C and it receives 777 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 (21.4 °C on average) and the coldest is January (5.4 °C). Rainfall peaks in May.
Saint-Lys averages 26 frost days, 19 hot days (≥ 30 °C) and 127 rainy days per year.
Saint-Lys has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 34 to 18 per year over the period.
The hottest day of the period reached 41.4 °C (on 11 August 2025) and the coldest -15.8 °C (on 16 February 1956).
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
Saint-LysOccitanie
- coords
- 43.51°, 1.18°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
13.2°C
Average daily high
17.7°C
Average daily low
9.2°C
Annual rainfall
777mm
Sunshine / day
8.9h
Mean relative humidity
75%
Average peak wind
16.8km/h
Seasonal range
16.0°C
Frost days (< 0 °C)
26 d/yr
Hot days (≥ 30 °C)
19 d/yr
Rainy days (≥ 1 mm)
127 d/yr
Annual snowfall
9.3 cm
Average feels-like high
16.4 °C
Average feels-like low
7.2 °C
Average peak gust
33.4 km/h
Tropical nights (≥ 20 °C)
7 d/yr
Solar radiation
13.4 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.51 · 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
41.4 °C
11 August 2025
Coldest day
-15.8 °C
16 February 1956
Wettest day
78 mm
24 September 1993
Windiest day
60.1 km/h
27 December 1999
Strongest gust
134.6 km/h
24 January 2009
Hottest feels-like
44.1 °C
23 August 2023
Coldest feels-like
-20.8 °C
16 February 1956
Snowiest day
12.0 cm
4 January 1997
Sunniest day
14.6 h
18 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 | 10.9 °C | +1.9 °C | 76 mm | +10 mm |
| Feb | 13.5 °C | +2.8 °C | 31 mm | -28 mm |
| Mar | 14.3 °C | +0.4 °C | 54 mm | -9 mm |
| Apr | 18.7 °C | +2.4 °C | 90 mm | +13 mm |
| May | 21.8 °C | +1.8 °C | 120 mm | +34 mm |
| Jun | 28.7 °C | +4.9 °C | 83 mm | +18 mm |
| Jul | 27.8 °C | +1.3 °C | 31 mm | -16 mm |
| Aug | 30.8 °C | +4.1 °C | 99 mm | +42 mm |
| Sep | 22.9 °C | -1.0 °C | 53 mm | -3 mm |
| Oct | 20.8 °C | +1.7 °C | 35 mm | -25 mm |
| Nov | 14.0 °C | +0.9 °C | 107 mm | +38 mm |
| Dec | 11.8 °C | +2.0 °C | 43 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 Saint-Lys?
Saint-Lys has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 13.2 °C and it receives 777 mm of precipitation per year.
What is the hottest day ever recorded in Saint-Lys?
The hottest day measured in Saint-Lys between 1940 and 2025 was 11 August 2025, reaching 41.4 °C.
What is the coldest day in Saint-Lys?
The coldest day measured in Saint-Lys between 1940 and 2025 was 16 February 1956, at -15.8 °C.
Does it snow in Saint-Lys?
Yes. Saint-Lys gets on average 9.3 cm of snow per year and has around 26 frost days.
Has the climate of Saint-Lys warmed?
Yes: Saint-Lys warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Saint-Lys?
The wettest day measured in Saint-Lys between 1940 and 2025 was 24 September 1993, with 78 mm of rain in 24 hours.
What was the windiest day in Saint-Lys?
The windiest day measured in Saint-Lys between 1940 and 2025 was 27 December 1999, with winds reaching 60.1 km/h.
What is the warmest month in Saint-Lys?
The warmest month in Saint-Lys is July (21.4 °C on average); the coldest is January (5.4 °C).
How much does it rain in Saint-Lys?
Saint-Lys receives on average 777 mm of precipitation per year, spread over about 127 rainy days.
Is it sunny in Saint-Lys?
Saint-Lys gets on average 8.9 hours of sunshine per day, roughly 3,249 hours per year over 1940-2025.
What is the biggest single-day snowfall in Saint-Lys?
The heaviest 24-hour snowfall measured in Saint-Lys between 1940 and 2025 was 4 January 1997, with 12.0 cm.
Are there tropical nights in Saint-Lys?
Yes: Saint-Lys has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Saint-Lys?
In Saint-Lys, between 1940 and 2025, the highest apparent temperature reached 44.1 °C on 23 August 2023, and the lowest was -20.8 °C on 16 February 1956.
Compare Saint-Lys with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Saint-Lys