Aves climate — normals and trends

Q: What is the climate of Aves?

Aves has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 14.8 °C and it receives 1,278 mm of precipitation per year.

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

The hottest day measured in Aves between 1940 and 2025 was 1 August 1989, reaching 37.7 °C.

Q: What is the coldest day in Aves?

The coldest day measured in Aves between 1940 and 2025 was 4 February 1963, at -2.3 °C.

Q: Does it snow in Aves?

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

Q: Has the climate of Aves warmed?

Yes: Aves warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Aves?

The wettest day measured in Aves between 1940 and 2025 was 5 October 1981, with 96 mm of rain in 24 hours.

Q: What was the windiest day in Aves?

The windiest day measured in Aves between 1940 and 2025 was 15 February 1941, with winds reaching 64.4 km/h.

Q: What is the warmest month in Aves?

The warmest month in Aves is August (21.0 °C on average); the coldest is January (9.0 °C).

Q: How much does it rain in Aves?

Aves receives on average 1,278 mm of precipitation per year, spread over about 120 rainy days.

Q: Is it sunny in Aves?

Aves gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Aves (Portugal) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 14.8 °C and it receives 1,278 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 (21.0 °C on average) and the coldest is January (9.0 °C). Rainfall peaks in December.

Aves averages 1 frost days, 11 hot days (≥ 30 °C) and 120 rainy days per year.

Aves has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.

The number of frost days there went from about 2 to 0 per year over the period.

The hottest day of the period reached 37.7 °C (on 1 August 1989) and the coldest -2.3 °C (on 4 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

AvesPorto District

coords: 41.37°, -8.41°
period: 1940–2025 · 86 yrs

CsbWarm-summer MediterraneanWarmest monthAugustColdest monthJanuaryWettest monthDecemberDriest monthJuly

Mean daily temperature

14.8°C

Average daily high

18.5°C

Average daily low

11.5°C

Annual rainfall

1,278mm

Sunshine / day

10.0h

Mean relative humidity

79%

Average peak wind

17.4km/h

Seasonal range

12.0°C

Frost days (< 0 °C)

1 d/yr

Hot days (≥ 30 °C)

11 d/yr

Rainy days (≥ 1 mm)

120 d/yr

Annual snowfall

0.2 cm

Average feels-like high

17.9 °C

Average feels-like low

10.0 °C

Average peak gust

34.4 km/h

Tropical nights (≥ 20 °C)

9 d/yr

Solar radiation

16.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.3 °C

since 1940

+0.2 °C per decade · r² = 0.37 · 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

37.7 °C

1 August 1989

Coldest day

-2.3 °C

4 February 1963

Wettest day

96 mm

5 October 1981

Windiest day

64.4 km/h

15 February 1941

Strongest gust

141.8 km/h

15 February 1941

Hottest feels-like

43.5 °C

1 August 1989

Coldest feels-like

-6.6 °C

12 January 1941

Snowiest day

4.1 cm

23 February 1948

Sunniest day

14.9 h

21 June 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.1 °C5 August 2025	1.5 °C15 January 2025	16.0 °C	1,643 mm	21	0
2024	34.1 °C23 July 2024	3.0 °C7 January 2024	16.0 °C	1,256 mm	10	0
2023	34.5 °C22 August 2023	1.1 °C24 February 2023	16.0 °C	1,382 mm	8	0
2022	36.7 °C12 July 2022	1.3 °C31 January 2022	16.0 °C	1,362 mm	14	0
2021	33.7 °C16 July 2021	0.1 °C5 January 2021	15.3 °C	1,111 mm	6	0
2020	34.4 °C17 July 2020	1.4 °C27 December 2020	15.9 °C	1,088 mm	16	0
2019	31.6 °C22 August 2019	2.1 °C4 February 2019	15.1 °C	1,357 mm	3	0
2018	36.3 °C3 August 2018	1.1 °C15 January 2018	15.2 °C	1,393 mm	12	0
2017	33.7 °C20 August 2017	0.9 °C19 January 2017	15.6 °C	846 mm	12	0
2016	35.7 °C7 August 2016	3.5 °C19 February 2016	15.4 °C	1,446 mm	17	0
2015	31.5 °C20 June 2015	2.0 °C7 February 2015	15.5 °C	884 mm	7	0
2014	31.2 °C1 September 2014	2.7 °C16 February 2014	15.4 °C	1,666 mm	4	0
2013	36.6 °C7 July 2013	1.9 °C25 February 2013	15.2 °C	1,499 mm	22	0
2012	33.5 °C17 July 2012	0.9 °C3 February 2012	14.6 °C	894 mm	4	0
2011	32.7 °C20 August 2011	1.8 °C30 January 2011	15.8 °C	1,075 mm	10	0
2010	34.4 °C27 July 2010	-0.1 °C3 December 2010	15.3 °C	1,310 mm	20	1
2009	33.0 °C30 August 2009	-0.5 °C10 January 2009	15.3 °C	1,391 mm	10	1
2008	30.6 °C18 July 2008	1.4 °C2 December 2008	14.5 °C	1,115 mm	4	0
2007	33.5 °C30 July 2007	1.5 °C24 January 2007	14.9 °C	781 mm	5	0
2006	35.0 °C16 July 2006	0.3 °C31 January 2006	15.6 °C	1,433 mm	24	0
2005	35.3 °C14 August 2005	-1.0 °C2 March 2005	15.0 °C	837 mm	20	2
2004	31.8 °C14 July 2004	1.7 °C21 February 2004	15.0 °C	856 mm	7	0
2003	36.0 °C7 August 2003	0.9 °C13 January 2003	15.5 °C	1,362 mm	20	0
2002	32.6 °C13 August 2002	2.8 °C8 January 2002	15.1 °C	1,455 mm	2	0
2001	33.6 °C1 July 2001	-0.6 °C25 December 2001	15.0 °C	1,590 mm	10	1
2000	32.8 °C17 June 2000	1.8 °C2 January 2000	14.8 °C	1,676 mm	12	0
1999	34.0 °C8 July 1999	1.7 °C12 January 1999	14.9 °C	1,279 mm	7	0
1998	34.0 °C6 August 1998	1.9 °C23 December 1998	15.4 °C	1,052 mm	16	0
1997	33.8 °C26 July 1997	1.7 °C5 January 1997	16.0 °C	1,577 mm	8	0
1996	32.1 °C12 June 1996	1.1 °C22 February 1996	15.0 °C	1,449 mm	9	0
1995	33.7 °C24 July 1995	2.7 °C15 January 1995	16.3 °C	1,370 mm	17	0
1994	31.4 °C22 June 1994	-0.6 °C5 February 1994	14.9 °C	1,395 mm	1	1
1993	34.1 °C23 July 1993	0.1 °C1 March 1993	14.5 °C	1,285 mm	11	0
1992	34.0 °C14 July 1992	0.6 °C20 January 1992	14.6 °C	874 mm	8	0
1991	36.3 °C17 August 1991	0.9 °C15 January 1991	15.0 °C	1,004 mm	23	0
1990	36.3 °C20 July 1990	1.0 °C23 December 1990	15.7 °C	879 mm	23	0
1989	37.7 °C1 August 1989	2.1 °C3 January 1989	16.0 °C	1,133 mm	18	0
1988	36.7 °C6 September 1988	1.1 °C16 December 1988	14.9 °C	1,063 mm	6	0
1987	35.0 °C9 July 1987	0.2 °C16 January 1987	15.5 °C	1,279 mm	22	0
1986	32.5 °C20 July 1986	1.2 °C31 January 1986	14.4 °C	1,064 mm	10	0
1985	33.1 °C10 September 1985	-0.3 °C15 January 1985	14.9 °C	1,518 mm	13	1
1984	34.5 °C31 August 1984	1.4 °C11 January 1984	14.5 °C	1,481 mm	6	0
1983	33.5 °C6 August 1983	0.2 °C14 February 1983	14.7 °C	1,303 mm	9	0
1982	32.9 °C11 August 1982	2.7 °C30 December 1982	14.8 °C	921 mm	9	0
1981	35.8 °C14 June 1981	2.0 °C19 December 1981	15.1 °C	1,301 mm	23	0
1980	34.4 °C20 August 1980	0.6 °C18 January 1980	14.4 °C	1,055 mm	5	0
1979	32.2 °C15 July 1979	0.9 °C17 February 1979	14.4 °C	1,599 mm	8	0
1978	33.1 °C13 September 1978	-2.0 °C18 January 1978	13.6 °C	1,600 mm	12	2
1977	32.6 °C13 September 1977	0.8 °C10 January 1977	14.3 °C	1,636 mm	6	0
1976	33.6 °C23 July 1976	1.0 °C26 January 1976	14.4 °C	1,148 mm	8	0
1975	32.1 °C30 July 1975	0.6 °C31 December 1975	14.3 °C	1,031 mm	3	0
1974	32.9 °C10 July 1974	2.0 °C16 December 1974	14.1 °C	1,299 mm	6	0
1973	31.1 °C2 September 1973	0.8 °C24 December 1973	14.4 °C	1,159 mm	6	0
1972	31.1 °C13 July 1972	0.2 °C2 January 1972	13.7 °C	1,487 mm	3	0
1971	32.2 °C10 July 1971	-1.2 °C1 January 1971	14.0 °C	1,217 mm	7	2
1970	33.5 °C5 September 1970	-1.3 °C31 December 1970	14.3 °C	1,242 mm	11	2
1969	33.9 °C21 July 1969	1.0 °C14 December 1969	14.3 °C	1,656 mm	10	0
1968	33.7 °C30 June 1968	1.4 °C30 December 1968	14.7 °C	1,417 mm	10	0
1967	30.6 °C29 June 1967	-0.8 °C11 January 1967	14.4 °C	979 mm	3	2
1966	32.4 °C7 September 1966	1.5 °C25 December 1966	14.7 °C	2,048 mm	14	0
1965	33.2 °C27 August 1965	-0.9 °C3 March 1965	14.2 °C	1,563 mm	7	2
1964	33.9 °C4 August 1964	-0.9 °C28 January 1964	14.3 °C	1,233 mm	14	1
1963	33.2 °C10 August 1963	-2.3 °C4 February 1963	14.2 °C	1,872 mm	11	3
1962	34.1 °C28 August 1962	-1.1 °C26 December 1962	14.6 °C	1,001 mm	14	2
1961	33.5 °C27 August 1961	0.6 °C15 January 1961	15.5 °C	1,377 mm	8	0
1960	33.0 °C24 July 1960	-0.5 °C11 January 1960	14.4 °C	2,127 mm	6	1
1959	36.3 °C7 July 1959	1.4 °C4 January 1959	14.9 °C	1,608 mm	10	0
1958	31.6 °C4 August 1958	0.5 °C21 January 1958	14.2 °C	1,548 mm	4	0
1957	32.6 °C29 July 1957	-1.0 °C17 January 1957	14.4 °C	1,045 mm	9	1
1956	31.6 °C12 September 1956	-1.7 °C11 February 1956	13.4 °C	1,283 mm	2	7
1955	32.3 °C22 August 1955	0.5 °C8 March 1955	15.2 °C	1,483 mm	4	0
1954	33.1 °C23 July 1954	-1.4 °C5 February 1954	14.1 °C	1,074 mm	8	6
1953	33.5 °C5 August 1953	0.7 °C22 January 1953	14.7 °C	710 mm	13	0
1952	32.6 °C10 July 1952	0.3 °C28 January 1952	14.5 °C	1,247 mm	3	0
1951	30.9 °C26 July 1951	1.3 °C30 January 1951	14.1 °C	1,419 mm	4	0
1950	32.1 °C14 August 1950	1.0 °C30 December 1950	14.6 °C	1,216 mm	6	0
1949	35.9 °C28 July 1949	0.8 °C11 January 1949	15.1 °C	686 mm	22	0
1948	31.7 °C17 September 1948	-0.1 °C22 February 1948	15.1 °C	1,327 mm	3	1
1947	31.6 °C3 July 1947	-0.4 °C25 January 1947	14.9 °C	1,426 mm	7	3
1946	35.2 °C31 July 1946	-0.2 °C17 January 1946	14.2 °C	1,183 mm	12	1
1945	35.6 °C23 July 1945	-0.8 °C3 January 1945	15.2 °C	1,000 mm	14	5
1944	34.6 °C12 August 1944	-1.4 °C24 February 1944	14.5 °C	715 mm	15	1
1943	36.3 °C15 August 1943	1.4 °C18 November 1943	15.0 °C	991 mm	23	0
1942	32.2 °C23 July 1942	-0.3 °C12 February 1942	14.3 °C	1,400 mm	16	2
1941	35.2 °C21 July 1941	-2.2 °C11 January 1941	14.4 °C	1,629 mm	17	7
1940	34.5 °C17 August 1940	-1.8 °C23 January 1940	14.5 °C	1,243 mm	14	6

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

19.9 °C

+1.4 °C

Hot days (≥ 30 °C)

21 d/yr

+10

Frost days (< 0 °C)

0 d/yr

-1

Annual rainfall

1643 mm

+365 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	14.1 °C	+2.0 °C	292 mm	+133 mm
Feb	14.8 °C	+1.6 °C	90 mm	-52 mm
Mar	15.7 °C	+0.4 °C	165 mm	+31 mm
Apr	18.8 °C	+1.8 °C	192 mm	+77 mm
May	21.1 °C	+1.8 °C	90 mm	-11 mm
Jun	25.1 °C	+2.4 °C	54 mm	+6 mm
Jul	27.4 °C	+2.2 °C	12 mm	-8 mm
Aug	27.3 °C	+1.9 °C	12 mm	-14 mm
Sep	23.1 °C	-0.4 °C	37 mm	-29 mm
Oct	21.8 °C	+2.0 °C	159 mm	+15 mm
Nov	16.0 °C	+0.7 °C	345 mm	+188 mm
Dec	13.3 °C	+0.5 °C	197 mm	+28 mm

The year's extremes

Hottest day

35.1 °C

5 Aug 2025

Coldest day

1.5 °C

15 Jan 2025

Wettest day

70.1 mm

13 Nov 2025

Windiest day

49.1 km/h

20 Mar 2025

Strongest gust

87.8 km/h

8 Jan 2025

Hottest feels-like

39.8 °C

17 Jun 2025

Coldest feels-like

-1.8 °C

15 Jan 2025

Sunniest day

14.9 h

21 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 Aves?

Aves has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 14.8 °C and it receives 1,278 mm of precipitation per year.

What is the hottest day ever recorded in Aves?

The hottest day measured in Aves between 1940 and 2025 was 1 August 1989, reaching 37.7 °C.

What is the coldest day in Aves?

The coldest day measured in Aves between 1940 and 2025 was 4 February 1963, at -2.3 °C.

Does it snow in Aves?

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

Has the climate of Aves warmed?

Yes: Aves warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Aves?

The wettest day measured in Aves between 1940 and 2025 was 5 October 1981, with 96 mm of rain in 24 hours.

What was the windiest day in Aves?

The windiest day measured in Aves between 1940 and 2025 was 15 February 1941, with winds reaching 64.4 km/h.

What is the warmest month in Aves?

The warmest month in Aves is August (21.0 °C on average); the coldest is January (9.0 °C).

How much does it rain in Aves?

Aves receives on average 1,278 mm of precipitation per year, spread over about 120 rainy days.

Is it sunny in Aves?

Aves gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

What is the biggest single-day snowfall in Aves?

The heaviest 24-hour snowfall measured in Aves between 1940 and 2025 was 23 February 1948, with 4.1 cm.

Are there tropical nights in Aves?

Yes: Aves has on average 9 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Aves?

In Aves, between 1940 and 2025, the highest apparent temperature reached 43.5 °C on 1 August 1989, and the lowest was -6.6 °C on 12 January 1941.

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