Sully-sur-Loire climate — normals and trends

Q: What is the climate of Sully-sur-Loire?

Sully-sur-Loire has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.4 °C and it receives 707 mm of precipitation per year.

Q: What is the hottest day ever recorded in Sully-sur-Loire?

The hottest day measured in Sully-sur-Loire between 1940 and 2025 was 25 July 2019, reaching 41.6 °C.

Q: What is the coldest day in Sully-sur-Loire?

The coldest day measured in Sully-sur-Loire between 1940 and 2025 was 17 January 1985, at -21.4 °C.

Q: Does it snow in Sully-sur-Loire?

Yes. Sully-sur-Loire gets on average 12.6 cm of snow per year and has around 42 frost days.

Q: Has the climate of Sully-sur-Loire warmed?

Yes: Sully-sur-Loire warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Sully-sur-Loire?

The wettest day measured in Sully-sur-Loire between 1940 and 2025 was 19 September 2021, with 49 mm of rain in 24 hours.

Q: What was the windiest day in Sully-sur-Loire?

The windiest day measured in Sully-sur-Loire between 1940 and 2025 was 26 December 1999, with winds reaching 58.1 km/h.

Q: What is the warmest month in Sully-sur-Loire?

The warmest month in Sully-sur-Loire is July (19.7 °C on average); the coldest is January (3.6 °C).

Q: How much does it rain in Sully-sur-Loire?

Sully-sur-Loire receives on average 707 mm of precipitation per year, spread over about 131 rainy days.

Q: Is it sunny in Sully-sur-Loire?

Sully-sur-Loire gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.

Sully-sur-Loire (France) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 11.4 °C and it receives 707 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 (19.7 °C on average) and the coldest is January (3.6 °C). Rainfall peaks in May.

Sully-sur-Loire averages 42 frost days, 10 hot days (≥ 30 °C) and 131 rainy days per year.

Sully-sur-Loire has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The number of frost days there went from about 53 to 31 per year over the period.

The hottest day of the period reached 41.6 °C (on 25 July 2019) and the coldest -21.4 °C (on 17 January 1985).

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

Sully-sur-LoireCentre-Val de Loire

coords: 47.76°, 2.37°
period: 1940–2025 · 86 yrs

CfbTemperate oceanicWarmest monthJulyColdest monthJanuaryWettest monthMayDriest monthAugust

Mean daily temperature

11.4°C

Average daily high

15.4°C

Average daily low

7.7°C

Annual rainfall

707mm

Sunshine / day

8.1h

Mean relative humidity

77%

Average peak wind

17.3km/h

Seasonal range

16.1°C

Frost days (< 0 °C)

42 d/yr

Hot days (≥ 30 °C)

10 d/yr

Rainy days (≥ 1 mm)

131 d/yr

Annual snowfall

12.6 cm

Average feels-like high

13.3 °C

Average feels-like low

5.1 °C

Average peak gust

35.8 km/h

Tropical nights (≥ 20 °C)

2 d/yr

Solar radiation

11.9 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.38 · p = < 0.001

19402025

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

41.6 °C

25 July 2019

Coldest day

-21.4 °C

17 January 1985

Wettest day

49 mm

19 September 2021

Windiest day

58.1 km/h

26 December 1999

Strongest gust

131.8 km/h

26 December 1999

Hottest feels-like

41.6 °C

24 July 2019

Coldest feels-like

-26.8 °C

17 January 1985

Snowiest day

12.5 cm

25 April 1941

Sunniest day

15.7 h

30 June 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	39.3 °C1 July 2025	-6.1 °C14 January 2025	12.6 °C	734 mm	32	40
2024	36.5 °C30 July 2024	-5.3 °C16 January 2024	12.5 °C	950 mm	13	21
2023	35.0 °C9 September 2023	-6.0 °C9 February 2023	13.4 °C	769 mm	21	25
2022	38.3 °C18 June 2022	-5.2 °C18 December 2022	13.5 °C	670 mm	29	37
2021	33.5 °C16 June 2021	-6.5 °C13 February 2021	11.8 °C	822 mm	11	33
2020	37.5 °C31 July 2020	-2.9 °C22 January 2020	13.4 °C	673 mm	23	14
2019	41.6 °C25 July 2019	-3.0 °C22 January 2019	12.9 °C	767 mm	25	23
2018	36.3 °C7 August 2018	-9.9 °C28 February 2018	13.2 °C	717 mm	25	33
2017	37.0 °C21 June 2017	-7.4 °C21 January 2017	12.4 °C	640 mm	20	37
2016	36.4 °C24 August 2016	-4.6 °C1 December 2016	11.9 °C	799 mm	18	28
2015	38.9 °C1 July 2015	-4.2 °C1 January 2015	12.7 °C	610 mm	27	30
2014	34.4 °C18 July 2014	-6.8 °C29 December 2014	12.8 °C	754 mm	4	9
2013	36.1 °C1 August 2013	-5.6 °C17 January 2013	11.4 °C	777 mm	12	48
2012	37.9 °C18 August 2012	-12.4 °C7 February 2012	11.8 °C	762 mm	9	32
2011	37.4 °C27 June 2011	-4.1 °C31 January 2011	12.9 °C	587 mm	7	24
2010	34.2 °C9 July 2010	-8.3 °C7 January 2010	10.9 °C	674 mm	12	65
2009	36.0 °C19 August 2009	-10.4 °C7 January 2009	12.0 °C	662 mm	14	42
2008	32.8 °C1 July 2008	-4.4 °C27 January 2008	11.6 °C	704 mm	6	46
2007	33.2 °C5 August 2007	-6.1 °C20 December 2007	12.0 °C	713 mm	4	25
2006	37.0 °C26 July 2006	-5.1 °C25 January 2006	12.4 °C	629 mm	32	52
2005	34.4 °C15 July 2005	-9.4 °C1 March 2005	11.9 °C	577 mm	22	60
2004	34.0 °C2 August 2004	-4.7 °C4 January 2004	11.7 °C	632 mm	11	41
2003	39.8 °C6 August 2003	-9.3 °C10 January 2003	12.5 °C	622 mm	24	51
2002	34.8 °C17 June 2002	-4.9 °C1 January 2002	12.3 °C	749 mm	11	21
2001	34.4 °C25 August 2001	-7.0 °C15 December 2001	11.6 °C	945 mm	11	44
2000	34.2 °C25 August 2000	-6.4 °C26 January 2000	12.2 °C	784 mm	10	21
1999	35.1 °C25 August 1999	-6.1 °C12 January 1999	12.2 °C	892 mm	13	23
1998	38.2 °C10 August 1998	-7.8 °C24 November 1998	11.6 °C	627 mm	12	42
1997	33.8 °C24 August 1997	-12.0 °C1 January 1997	12.0 °C	688 mm	12	39
1996	33.5 °C22 July 1996	-10.6 °C29 December 1996	10.8 °C	686 mm	8	55
1995	35.8 °C20 July 1995	-6.6 °C5 January 1995	12.0 °C	757 mm	21	35
1994	34.4 °C12 July 1994	-4.2 °C19 January 1994	12.5 °C	840 mm	18	18
1993	32.3 °C21 August 1993	-10.2 °C4 January 1993	11.1 °C	700 mm	5	47
1992	35.0 °C8 August 1992	-8.3 °C23 January 1992	11.4 °C	656 mm	10	40
1991	33.3 °C11 July 1991	-11.7 °C7 February 1991	10.9 °C	510 mm	7	56
1990	37.2 °C4 August 1990	-5.5 °C7 December 1990	12.4 °C	489 mm	18	26
1989	34.3 °C22 July 1989	-5.2 °C27 November 1989	12.1 °C	586 mm	8	44
1988	30.3 °C7 August 1988	-5.3 °C22 November 1988	11.5 °C	753 mm	2	24
1987	33.8 °C21 August 1987	-16.6 °C17 January 1987	10.3 °C	754 mm	7	60
1986	35.4 °C3 August 1986	-12.7 °C25 February 1986	10.4 °C	788 mm	7	55
1985	34.0 °C25 July 1985	-21.4 °C17 January 1985	10.1 °C	594 mm	2	69
1984	34.7 °C30 July 1984	-5.4 °C16 February 1984	10.8 °C	805 mm	7	34
1983	33.3 °C16 July 1983	-5.3 °C5 December 1983	11.3 °C	764 mm	10	47
1982	32.6 °C11 July 1982	-4.2 °C14 January 1982	11.7 °C	811 mm	9	29
1981	31.0 °C5 August 1981	-7.3 °C14 January 1981	10.9 °C	925 mm	1	45
1980	31.4 °C25 July 1980	-8.8 °C14 January 1980	10.3 °C	689 mm	2	47
1979	31.0 °C27 July 1979	-9.8 °C16 January 1979	10.5 °C	866 mm	1	48
1978	30.2 °C28 July 1978	-7.8 °C31 December 1978	10.5 °C	774 mm	2	41
1977	28.9 °C3 July 1977	-4.5 °C30 November 1977	11.1 °C	908 mm	0	29
1976	34.5 °C1 July 1976	-6.5 °C28 December 1976	11.7 °C	556 mm	24	43
1975	36.6 °C4 August 1975	-5.0 °C20 December 1975	10.9 °C	735 mm	10	42
1974	36.1 °C15 August 1974	-2.4 °C5 March 1974	11.3 °C	771 mm	6	20
1973	33.7 °C4 September 1973	-8.2 °C3 December 1973	10.8 °C	681 mm	17	71
1972	30.1 °C8 July 1972	-9.8 °C31 January 1972	10.5 °C	858 mm	1	26
1971	31.6 °C12 July 1971	-12.3 °C3 January 1971	10.7 °C	771 mm	6	46
1970	31.1 °C28 July 1970	-10.1 °C31 December 1970	10.9 °C	779 mm	2	42
1969	33.1 °C28 July 1969	-8.3 °C7 December 1969	11.0 °C	726 mm	5	54
1968	33.7 °C1 July 1968	-8.0 °C31 December 1968	10.6 °C	843 mm	2	46
1967	32.3 °C1 August 1967	-9.4 °C11 January 1967	11.1 °C	769 mm	8	36
1966	30.8 °C12 August 1966	-10.8 °C19 January 1966	11.5 °C	814 mm	1	28
1965	29.4 °C25 June 1965	-4.1 °C3 March 1965	10.7 °C	928 mm	0	41
1964	35.8 °C17 July 1964	-13.4 °C29 December 1964	11.1 °C	518 mm	11	58
1963	31.6 °C22 July 1963	-12.4 °C19 January 1963	10.1 °C	686 mm	2	68
1962	32.8 °C25 July 1962	-9.6 °C28 December 1962	10.4 °C	663 mm	3	60
1961	34.2 °C29 August 1961	-5.9 °C19 December 1961	12.3 °C	619 mm	15	31
1960	30.6 °C22 August 1960	-9.0 °C16 January 1960	11.3 °C	803 mm	1	34
1959	33.0 °C8 July 1959	-5.0 °C16 January 1959	12.4 °C	539 mm	7	30
1958	28.0 °C14 September 1958	-4.8 °C23 January 1958	11.2 °C	1,005 mm	0	40
1957	35.3 °C6 July 1957	-5.9 °C21 January 1957	11.5 °C	710 mm	6	31
1956	29.6 °C8 July 1956	-14.8 °C2 February 1956	10.0 °C	639 mm	0	61
1955	30.7 °C17 July 1955	-5.7 °C20 February 1955	11.2 °C	662 mm	4	54
1954	32.7 °C3 August 1954	-12.3 °C1 February 1954	10.6 °C	673 mm	1	35
1953	33.0 °C12 August 1953	-11.3 °C9 January 1953	11.2 °C	427 mm	5	55
1952	37.1 °C1 July 1952	-9.0 °C28 January 1952	11.1 °C	766 mm	8	51
1951	28.6 °C30 July 1951	-3.4 °C18 December 1951	10.8 °C	729 mm	0	29
1950	31.8 °C3 July 1950	-9.7 °C30 December 1950	11.3 °C	651 mm	5	47
1949	34.5 °C12 July 1949	-5.8 °C6 March 1949	12.0 °C	414 mm	13	49
1948	32.5 °C28 July 1948	-8.0 °C20 February 1948	11.2 °C	675 mm	3	35
1947	37.6 °C28 July 1947	-12.8 °C28 January 1947	12.3 °C	588 mm	37	60
1946	34.0 °C4 August 1946	-11.2 °C21 December 1946	10.9 °C	538 mm	8	55
1945	35.0 °C14 July 1945	-16.0 °C12 January 1945	11.3 °C	488 mm	7	57
1944	32.9 °C13 August 1944	-9.9 °C1 March 1944	10.7 °C	684 mm	9	59
1943	34.0 °C31 July 1943	-3.8 °C9 January 1943	11.7 °C	565 mm	8	46
1942	32.1 °C27 August 1942	-17.4 °C22 January 1942	10.7 °C	576 mm	11	81
1941	33.9 °C25 July 1941	-11.8 °C14 January 1941	10.2 °C	663 mm	10	51
1940	31.2 °C6 September 1940	-13.6 °C20 January 1940	10.5 °C	696 mm	3	66

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?

Year

Across the whole year

Average daily high

17.4 °C

+2.0 °C

Hot days (≥ 30 °C)

32 d/yr

+22

Frost days (< 0 °C)

40 d/yr

-2

Annual rainfall

734 mm

+27 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	7.2 °C	+1.1 °C	114 mm	+53 mm
Feb	9.0 °C	+1.2 °C	54 mm	-3 mm
Mar	13.7 °C	+2.1 °C	56 mm	+0 mm
Apr	18.6 °C	+3.6 °C	52 mm	-5 mm
May	21.1 °C	+2.4 °C	34 mm	-37 mm
Jun	28.2 °C	+5.9 °C	27 mm	-31 mm
Jul	26.5 °C	+1.9 °C	71 mm	+20 mm
Aug	27.1 °C	+2.8 °C	64 mm	+14 mm
Sep	20.3 °C	-0.8 °C	71 mm	+17 mm
Oct	16.5 °C	+0.4 °C	67 mm	+2 mm
Nov	11.5 °C	+1.4 °C	61 mm	-3 mm
Dec	8.9 °C	+2.0 °C	63 mm	-1 mm

The year's extremes

Hottest day

39.3 °C

1 Jul 2025

Coldest day

-6.1 °C

14 Jan 2025

Wettest day

23.8 mm

31 Aug 2025

Windiest day

38.6 km/h

6 Jan 2025

Strongest gust

79.2 km/h

6 Jan 2025

Hottest feels-like

40.5 °C

2 Jul 2025

Coldest feels-like

-9.6 °C

14 Jan 2025

Snowiest day

0.8 cm

23 Nov 2025

Sunniest day

15.7 h

30 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Sully-sur-Loire?

Sully-sur-Loire has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 11.4 °C and it receives 707 mm of precipitation per year.

What is the hottest day ever recorded in Sully-sur-Loire?

The hottest day measured in Sully-sur-Loire between 1940 and 2025 was 25 July 2019, reaching 41.6 °C.

What is the coldest day in Sully-sur-Loire?

The coldest day measured in Sully-sur-Loire between 1940 and 2025 was 17 January 1985, at -21.4 °C.

Does it snow in Sully-sur-Loire?

Yes. Sully-sur-Loire gets on average 12.6 cm of snow per year and has around 42 frost days.

Has the climate of Sully-sur-Loire warmed?

Yes: Sully-sur-Loire warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Sully-sur-Loire?

The wettest day measured in Sully-sur-Loire between 1940 and 2025 was 19 September 2021, with 49 mm of rain in 24 hours.

What was the windiest day in Sully-sur-Loire?

The windiest day measured in Sully-sur-Loire between 1940 and 2025 was 26 December 1999, with winds reaching 58.1 km/h.

What is the warmest month in Sully-sur-Loire?

The warmest month in Sully-sur-Loire is July (19.7 °C on average); the coldest is January (3.6 °C).

How much does it rain in Sully-sur-Loire?

Sully-sur-Loire receives on average 707 mm of precipitation per year, spread over about 131 rainy days.

Is it sunny in Sully-sur-Loire?

Sully-sur-Loire gets on average 8.1 hours of sunshine per day, roughly 2,957 hours per year over 1940-2025.

What is the biggest single-day snowfall in Sully-sur-Loire?

The heaviest 24-hour snowfall measured in Sully-sur-Loire between 1940 and 2025 was 25 April 1941, with 12.5 cm.

Are there tropical nights in Sully-sur-Loire?

Yes: Sully-sur-Loire has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Sully-sur-Loire?

In Sully-sur-Loire, between 1940 and 2025, the highest apparent temperature reached 41.6 °C on 24 July 2019, and the lowest was -26.8 °C on 17 January 1985.

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