Aley climate — normals and trends

Q: What is the climate of Aley?

Aley has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.7 °C and it receives 640 mm of precipitation per year.

Q: What is the hottest day ever recorded in Aley?

The hottest day measured in Aley between 1940 and 2025 was 9 August 1998, reaching 38.6 °C.

Q: What is the coldest day in Aley?

The coldest day measured in Aley between 1940 and 2025 was 7 February 1950, at -9.7 °C.

Q: Does it snow in Aley?

Almost never: Aley sees virtually no snow, with about 1 frost days per year.

Q: Has the climate of Aley warmed?

Yes: Aley warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Aley?

The wettest day measured in Aley between 1940 and 2025 was 17 October 1984, with 76 mm of rain in 24 hours.

Q: What was the windiest day in Aley?

The windiest day measured in Aley between 1940 and 2025 was 9 February 1953, with winds reaching 42.4 km/h.

Q: What is the warmest month in Aley?

The warmest month in Aley is August (25.4 °C on average); the coldest is January (9.7 °C).

Q: How much does it rain in Aley?

Aley receives on average 640 mm of precipitation per year, spread over about 73 rainy days.

Q: Is it sunny in Aley?

Aley gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.

Aley (Lebanon) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.7 °C and it receives 640 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 (25.4 °C on average) and the coldest is January (9.7 °C). Rainfall peaks in January.

Aley averages 1 frost days, 48 hot days (≥ 30 °C) and 73 rainy days per year.

Aley has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.6 °C (on 9 August 1998) and the coldest -9.7 °C (on 7 February 1950).

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

AleyMount Lebanon

coords: 33.81°, 35.60°
period: 1940–2025 · 86 yrs

CsaHot-summer MediterraneanWarmest monthAugustColdest monthJanuaryWettest monthJanuaryDriest monthJuly

Mean daily temperature

17.7°C

Average daily high

22.6°C

Average daily low

13.5°C

Annual rainfall

640mm

Sunshine / day

11.1h

Mean relative humidity

68%

Average peak wind

13.1km/h

Seasonal range

15.7°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

48 d/yr

Rainy days (≥ 1 mm)

73 d/yr

Annual snowfall

0.9 cm

Average feels-like high

22.9 °C

Average feels-like low

12.6 °C

Average peak gust

33.8 km/h

Tropical nights (≥ 20 °C)

64 d/yr

Solar radiation

19.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.0 °C

since 1940

+0.2 °C per decade · r² = 0.46 · 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

38.6 °C

9 August 1998

Coldest day

-9.7 °C

7 February 1950

Wettest day

76 mm

17 October 1984

Windiest day

42.4 km/h

9 February 1953

Strongest gust

100.1 km/h

8 February 1965

Hottest feels-like

42.1 °C

29 July 2007

Coldest feels-like

-13.8 °C

7 February 1950

Snowiest day

9.9 cm

5 February 1950

Sunniest day

13.7 h

29 June 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	38.3 °C13 August 2025	-1.2 °C25 February 2025	19.7 °C	418 mm	77	2
2024	36.5 °C25 April 2024	3.9 °C1 February 2024	19.7 °C	622 mm	94	0
2023	36.5 °C2 June 2023	0.5 °C13 February 2023	19.5 °C	684 mm	78	0
2022	33.2 °C29 August 2022	-0.2 °C25 January 2022	18.7 °C	513 mm	55	1
2021	34.0 °C5 August 2021	1.6 °C21 January 2021	19.4 °C	617 mm	73	0
2020	37.2 °C4 September 2020	0.0 °C10 February 2020	19.2 °C	620 mm	85	0
2019	37.4 °C23 May 2019	1.2 °C19 January 2019	18.9 °C	798 mm	85	0
2018	35.6 °C18 May 2018	4.7 °C27 January 2018	19.6 °C	637 mm	78	0
2017	34.3 °C3 July 2017	-2.4 °C29 January 2017	18.7 °C	427 mm	82	3
2016	34.7 °C15 May 2016	-1.2 °C28 January 2016	19.0 °C	646 mm	76	2
2015	37.2 °C27 May 2015	-2.8 °C10 January 2015	18.6 °C	576 mm	73	2
2014	35.3 °C28 June 2014	1.7 °C5 February 2014	18.6 °C	431 mm	51	0
2013	34.4 °C30 May 2013	0.3 °C15 December 2013	18.5 °C	613 mm	52	0
2012	34.5 °C18 July 2012	-1.7 °C20 February 2012	18.6 °C	889 mm	86	2
2011	34.1 °C9 July 2011	3.4 °C3 February 2011	17.9 °C	639 mm	49	0
2010	38.1 °C20 August 2010	-0.3 °C6 February 2010	19.8 °C	421 mm	95	1
2009	35.7 °C18 October 2009	1.7 °C13 January 2009	18.4 °C	731 mm	62	0
2008	36.8 °C24 April 2008	-0.6 °C13 January 2008	18.4 °C	446 mm	59	4
2007	35.6 °C29 July 2007	1.7 °C31 December 2007	18.2 °C	594 mm	58	0
2006	36.0 °C29 September 2006	0.3 °C29 December 2006	17.7 °C	522 mm	43	0
2005	33.6 °C15 August 2005	-1.0 °C10 February 2005	17.7 °C	654 mm	42	2
2004	34.3 °C10 May 2004	-0.6 °C17 December 2004	18.1 °C	626 mm	54	1
2003	33.9 °C29 May 2003	3.1 °C1 March 2003	18.5 °C	911 mm	84	0
2002	38.2 °C30 July 2002	0.9 °C14 January 2002	18.6 °C	733 mm	65	0
2001	36.0 °C27 May 2001	2.4 °C26 January 2001	19.0 °C	474 mm	79	0
2000	37.2 °C30 July 2000	1.8 °C28 January 2000	18.2 °C	593 mm	71	0
1999	38.3 °C30 September 1999	2.7 °C22 February 1999	18.8 °C	354 mm	61	0
1998	38.6 °C9 August 1998	0.8 °C12 January 1998	18.7 °C	577 mm	92	0
1997	35.2 °C16 October 1997	-1.1 °C7 February 1997	17.6 °C	568 mm	39	2
1996	33.7 °C12 May 1996	1.6 °C3 February 1996	18.1 °C	564 mm	65	0
1995	36.8 °C23 May 1995	2.7 °C27 March 1995	17.5 °C	484 mm	45	0
1994	36.2 °C13 September 1994	3.7 °C23 December 1994	18.1 °C	814 mm	58	0
1993	35.4 °C22 June 1993	-1.0 °C4 February 1993	17.4 °C	480 mm	52	1
1992	35.1 °C5 September 1992	-3.1 °C10 February 1992	16.3 °C	735 mm	35	3
1991	33.4 °C2 October 1991	0.6 °C27 January 1991	17.5 °C	669 mm	26	0
1990	34.8 °C17 October 1990	-1.0 °C25 January 1990	17.5 °C	401 mm	41	1
1989	33.7 °C16 May 1989	-1.6 °C4 January 1989	17.4 °C	272 mm	43	3
1988	37.5 °C16 May 1988	0.8 °C25 February 1988	17.3 °C	791 mm	64	0
1987	35.0 °C7 August 1987	0.7 °C12 March 1987	17.2 °C	731 mm	57	0
1986	35.1 °C18 September 1986	1.0 °C24 January 1986	17.3 °C	655 mm	51	0
1985	35.5 °C23 August 1985	-1.7 °C2 March 1985	17.4 °C	537 mm	48	5
1984	34.5 °C22 September 1984	1.0 °C16 March 1984	16.9 °C	658 mm	31	0
1983	36.6 °C11 July 1983	-1.7 °C27 January 1983	16.6 °C	637 mm	37	1
1982	33.9 °C12 August 1982	-2.7 °C5 February 1982	16.6 °C	559 mm	34	2
1981	35.3 °C25 September 1981	2.7 °C1 January 1981	17.3 °C	641 mm	52	0
1980	35.7 °C31 May 1980	-0.2 °C16 January 1980	17.1 °C	734 mm	41	1
1979	34.7 °C29 September 1979	0.4 °C29 December 1979	17.7 °C	514 mm	39	0
1978	36.3 °C10 July 1978	2.8 °C15 January 1978	17.5 °C	696 mm	46	0
1977	36.7 °C24 August 1977	1.5 °C8 January 1977	17.2 °C	788 mm	49	0
1976	32.0 °C7 October 1976	-2.3 °C2 March 1976	16.9 °C	653 mm	14	2
1975	32.6 °C20 October 1975	0.6 °C11 February 1975	17.0 °C	574 mm	21	0
1974	33.3 °C22 July 1974	-0.2 °C23 January 1974	17.3 °C	528 mm	45	1
1973	35.5 °C29 September 1973	-0.5 °C1 January 1973	17.0 °C	607 mm	32	1
1972	35.6 °C17 September 1972	-0.8 °C23 December 1972	16.6 °C	602 mm	15	1
1971	34.0 °C19 June 1971	0.9 °C17 December 1971	16.8 °C	982 mm	15	0
1970	36.2 °C21 May 1970	1.1 °C16 December 1970	17.2 °C	599 mm	15	0
1969	36.1 °C3 June 1969	1.2 °C30 January 1969	17.5 °C	814 mm	28	0
1968	35.4 °C18 May 1968	1.5 °C2 February 1968	17.4 °C	818 mm	36	0
1967	33.9 °C21 May 1967	-1.0 °C21 January 1967	16.5 °C	916 mm	11	2
1966	35.8 °C3 June 1966	0.9 °C23 March 1966	18.1 °C	583 mm	36	0
1965	36.1 °C7 June 1965	2.2 °C14 January 1965	17.5 °C	681 mm	48	0
1964	35.3 °C31 May 1964	-2.8 °C19 January 1964	17.0 °C	653 mm	31	5
1963	34.2 °C7 June 1963	1.2 °C8 March 1963	18.0 °C	748 mm	66	0
1962	35.3 °C9 August 1962	1.0 °C22 February 1962	18.5 °C	549 mm	53	0
1961	35.2 °C7 June 1961	0.6 °C1 March 1961	17.3 °C	629 mm	46	0
1960	34.0 °C6 May 1960	1.0 °C24 January 1960	18.5 °C	451 mm	65	0
1959	32.6 °C10 June 1959	-2.5 °C6 February 1959	16.6 °C	521 mm	11	8
1958	34.9 °C24 August 1958	-0.1 °C1 February 1958	18.0 °C	501 mm	39	1
1957	33.3 °C7 October 1957	-2.3 °C4 February 1957	17.6 °C	610 mm	42	3
1956	36.0 °C24 July 1956	0.0 °C12 December 1956	17.4 °C	720 mm	39	0
1955	33.4 °C3 October 1955	3.0 °C25 February 1955	18.0 °C	644 mm	31	0
1954	34.6 °C22 August 1954	-1.6 °C14 January 1954	17.4 °C	1,030 mm	28	1
1953	33.8 °C27 September 1953	-1.2 °C22 December 1953	16.5 °C	1,115 mm	23	4
1952	35.7 °C23 August 1952	0.9 °C15 February 1952	17.7 °C	690 mm	40	0
1951	32.7 °C10 September 1951	1.3 °C26 January 1951	17.5 °C	772 mm	37	0
1950	33.2 °C18 May 1950	-9.7 °C7 February 1950	17.1 °C	661 mm	19	12
1949	34.0 °C10 May 1949	-1.0 °C9 February 1949	16.5 °C	807 mm	13	4
1948	32.6 °C4 July 1948	-0.2 °C29 February 1948	16.5 °C	820 mm	28	1
1947	33.3 °C28 June 1947	2.2 °C26 December 1947	18.0 °C	594 mm	44	0
1946	37.2 °C8 September 1946	1.3 °C24 January 1946	17.6 °C	611 mm	43	0
1945	36.6 °C11 July 1945	-1.0 °C25 February 1945	17.0 °C	578 mm	54	2
1944	35.3 °C14 June 1944	-0.7 °C26 February 1944	17.3 °C	557 mm	37	1
1943	37.4 °C30 September 1943	-0.3 °C7 March 1943	17.3 °C	514 mm	55	1
1942	35.2 °C7 May 1942	-3.8 °C4 January 1942	17.3 °C	592 mm	28	6
1941	36.0 °C25 May 1941	2.4 °C12 February 1941	17.4 °C	997 mm	39	0
1940	34.9 °C2 June 1940	0.9 °C16 January 1940	17.1 °C	650 mm	30	0

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

24.2 °C

+1.6 °C

Hot days (≥ 30 °C)

77 d/yr

+29

Frost days (< 0 °C)

2 d/yr

Annual rainfall

418 mm

-222 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	17.8 °C	+3.6 °C	10 mm	-122 mm
Feb	13.3 °C	-1.6 °C	115 mm	-7 mm
Mar	20.1 °C	+3.1 °C	59 mm	-48 mm
Apr	22.2 °C	+1.5 °C	27 mm	-24 mm
May	26.4 °C	+1.7 °C	8 mm	-8 mm
Jun	29.0 °C	+1.3 °C	0 mm	-3 mm
Jul	30.9 °C	+1.3 °C	0 mm	-1 mm
Aug	31.6 °C	+1.6 °C	0 mm	-1 mm
Sep	29.4 °C	+0.7 °C	3 mm	-2 mm
Oct	26.3 °C	+0.3 °C	8 mm	-20 mm
Nov	25.7 °C	+4.5 °C	51 mm	-12 mm
Dec	17.5 °C	+1.2 °C	137 mm	+27 mm

The year's extremes

Hottest day

38.3 °C

13 Aug 2025

Coldest day

-1.2 °C

25 Feb 2025

Wettest day

65.5 mm

27 Dec 2025

Windiest day

31.3 km/h

31 Dec 2025

Strongest gust

71.3 km/h

31 Dec 2025

Hottest feels-like

41.5 °C

13 Aug 2025

Coldest feels-like

-4.9 °C

25 Feb 2025

Sunniest day

13.7 h

29 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 Aley?

Aley has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.7 °C and it receives 640 mm of precipitation per year.

What is the hottest day ever recorded in Aley?

The hottest day measured in Aley between 1940 and 2025 was 9 August 1998, reaching 38.6 °C.

What is the coldest day in Aley?

The coldest day measured in Aley between 1940 and 2025 was 7 February 1950, at -9.7 °C.

Does it snow in Aley?

Almost never: Aley sees virtually no snow, with about 1 frost days per year.

Has the climate of Aley warmed?

Yes: Aley warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Aley?

The wettest day measured in Aley between 1940 and 2025 was 17 October 1984, with 76 mm of rain in 24 hours.

What was the windiest day in Aley?

The windiest day measured in Aley between 1940 and 2025 was 9 February 1953, with winds reaching 42.4 km/h.

What is the warmest month in Aley?

The warmest month in Aley is August (25.4 °C on average); the coldest is January (9.7 °C).

How much does it rain in Aley?

Aley receives on average 640 mm of precipitation per year, spread over about 73 rainy days.

Is it sunny in Aley?

Aley gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.

What is the biggest single-day snowfall in Aley?

The heaviest 24-hour snowfall measured in Aley between 1940 and 2025 was 5 February 1950, with 9.9 cm.

Are there tropical nights in Aley?

Yes: Aley has on average 64 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Aley?

In Aley, between 1940 and 2025, the highest apparent temperature reached 42.1 °C on 29 July 2007, and the lowest was -13.8 °C on 7 February 1950.

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