Eirol climate — normals and trends

Q: What is the climate of Eirol?

Eirol has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 1,025 mm of precipitation per year.

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

The hottest day measured in Eirol between 1940 and 2025 was 13 July 2022, reaching 40.8 °C.

Q: What is the coldest day in Eirol?

The coldest day measured in Eirol between 1940 and 2025 was 11 January 1941, at -4.5 °C.

Q: Does it snow in Eirol?

Almost never: Eirol sees virtually no snow, with about 3 frost days per year.

Q: Has the climate of Eirol warmed?

Yes: Eirol warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Eirol?

The wettest day measured in Eirol between 1940 and 2025 was 13 November 2025, with 83 mm of rain in 24 hours.

Q: What was the windiest day in Eirol?

The windiest day measured in Eirol between 1940 and 2025 was 15 February 1941, with winds reaching 58.5 km/h.

Q: What is the warmest month in Eirol?

The warmest month in Eirol is July (21.2 °C on average); the coldest is January (9.0 °C).

Q: How much does it rain in Eirol?

Eirol receives on average 1,025 mm of precipitation per year, spread over about 108 rainy days.

Q: Is it sunny in Eirol?

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

Eirol (Portugal) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 15.0 °C and it receives 1,025 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 (21.2 °C on average) and the coldest is January (9.0 °C). Rainfall peaks in December.

Eirol averages 3 frost days, 23 hot days (≥ 30 °C) and 108 rainy days per year.

Eirol has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.

The number of frost days there went from about 6 to 0 per year over the period.

The hottest day of the period reached 40.8 °C (on 13 July 2022) and the coldest -4.5 °C (on 11 January 1941).

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

EirolAveiro District

coords: 40.61°, -8.54°
period: 1940–2025 · 86 yrs

CsbWarm-summer MediterraneanWarmest monthJulyColdest monthJanuaryWettest monthDecemberDriest monthJuly

Mean daily temperature

15.0°C

Average daily high

19.8°C

Average daily low

10.9°C

Annual rainfall

1,025mm

Sunshine / day

10.0h

Mean relative humidity

77%

Average peak wind

17.5km/h

Seasonal range

12.2°C

Frost days (< 0 °C)

3 d/yr

Hot days (≥ 30 °C)

23 d/yr

Rainy days (≥ 1 mm)

108 d/yr

Annual snowfall

0.1 cm

Average feels-like high

19.0 °C

Average feels-like low

9.5 °C

Average peak gust

35.6 km/h

Tropical nights (≥ 20 °C)

4 d/yr

Solar radiation

16.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.2 °C

since 1940

+0.1 °C per decade · r² = 0.32 · 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

40.8 °C

13 July 2022

Coldest day

-4.5 °C

11 January 1941

Wettest day

83 mm

13 November 2025

Windiest day

58.5 km/h

15 February 1941

Strongest gust

116.3 km/h

30 December 1981

Hottest feels-like

43.4 °C

14 June 1981

Coldest feels-like

-9.1 °C

11 January 1941

Snowiest day

6.2 cm

23 February 1956

Sunniest day

14.9 h

12 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.6 °C3 August 2025	-0.4 °C15 January 2025	16.2 °C	1,411 mm	37	1
2024	36.4 °C23 July 2024	1.9 °C7 January 2024	16.2 °C	1,033 mm	18	0
2023	38.3 °C7 August 2023	-0.4 °C26 January 2023	16.3 °C	977 mm	24	3
2022	40.8 °C13 July 2022	1.3 °C31 January 2022	16.3 °C	999 mm	27	0
2021	35.7 °C16 July 2021	-2.0 °C6 January 2021	15.4 °C	926 mm	12	8
2020	37.8 °C17 July 2020	-1.4 °C27 December 2020	16.0 °C	826 mm	35	1
2019	33.4 °C22 August 2019	0.2 °C4 February 2019	15.3 °C	984 mm	16	0
2018	38.8 °C4 August 2018	-0.6 °C8 February 2018	15.3 °C	1,118 mm	24	1
2017	37.9 °C20 August 2017	-1.2 °C20 January 2017	15.9 °C	620 mm	30	5
2016	38.7 °C7 August 2016	1.5 °C17 February 2016	15.5 °C	1,195 mm	37	0
2015	35.7 °C20 June 2015	-0.3 °C7 February 2015	15.7 °C	643 mm	21	1
2014	33.5 °C14 June 2014	1.0 °C31 December 2014	15.5 °C	1,377 mm	15	0
2013	38.2 °C4 July 2013	1.0 °C9 December 2013	15.3 °C	1,160 mm	39	0
2012	37.7 °C17 July 2012	-1.5 °C3 February 2012	14.9 °C	710 mm	18	3
2011	35.5 °C26 June 2011	0.5 °C30 January 2011	15.9 °C	921 mm	23	0
2010	37.7 °C27 July 2010	-1.8 °C17 December 2010	15.4 °C	1,104 mm	39	2
2009	34.9 °C30 August 2009	-2.6 °C9 January 2009	15.6 °C	1,065 mm	21	7
2008	33.0 °C15 July 2008	0.2 °C26 December 2008	14.8 °C	813 mm	9	0
2007	36.1 °C29 July 2007	-0.4 °C17 December 2007	15.1 °C	594 mm	20	1
2006	37.1 °C16 July 2006	-1.5 °C28 January 2006	15.8 °C	1,093 mm	37	3
2005	39.0 °C14 August 2005	-2.6 °C2 March 2005	15.3 °C	696 mm	34	7
2004	34.7 °C14 July 2004	0.0 °C21 January 2004	15.2 °C	653 mm	23	0
2003	39.7 °C1 August 2003	-0.8 °C10 January 2003	15.6 °C	1,109 mm	34	6
2002	34.5 °C17 July 2002	1.1 °C8 January 2002	15.3 °C	1,142 mm	11	0
2001	35.5 °C1 July 2001	-2.1 °C25 December 2001	15.2 °C	1,200 mm	26	4
2000	35.4 °C17 June 2000	-0.2 °C22 January 2000	15.1 °C	1,292 mm	20	1
1999	38.3 °C8 July 1999	0.3 °C17 December 1999	15.0 °C	934 mm	18	0
1998	36.2 °C6 August 1998	-0.2 °C6 December 1998	15.5 °C	819 mm	23	1
1997	36.7 °C26 July 1997	-0.5 °C6 January 1997	16.2 °C	1,293 mm	19	1
1996	35.1 °C12 June 1996	-0.8 °C22 February 1996	15.1 °C	1,245 mm	27	2
1995	37.4 °C24 July 1995	1.1 °C15 January 1995	16.5 °C	1,001 mm	27	0
1994	35.8 °C22 June 1994	0.0 °C26 December 1994	15.0 °C	946 mm	8	0
1993	38.3 °C23 July 1993	-1.0 °C1 March 1993	14.5 °C	1,028 mm	25	2
1992	35.3 °C14 July 1992	-0.9 °C20 January 1992	14.9 °C	684 mm	28	2
1991	38.1 °C17 August 1991	0.0 °C15 January 1991	15.2 °C	764 mm	42	0
1990	37.8 °C18 July 1990	-1.3 °C23 December 1990	15.7 °C	731 mm	31	2
1989	38.1 °C28 July 1989	1.0 °C2 January 1989	16.2 °C	976 mm	31	0
1988	38.4 °C6 September 1988	-0.3 °C16 December 1988	15.0 °C	915 mm	17	1
1987	38.4 °C2 August 1987	-2.3 °C14 January 1987	15.8 °C	1,016 mm	47	2
1986	35.3 °C20 July 1986	0.8 °C9 February 1986	14.6 °C	847 mm	16	0
1985	35.9 °C10 September 1985	-2.5 °C15 January 1985	15.0 °C	1,168 mm	29	7
1984	36.4 °C31 August 1984	0.1 °C11 January 1984	14.5 °C	1,116 mm	19	0
1983	36.9 °C6 September 1983	-2.4 °C14 February 1983	14.9 °C	976 mm	22	4
1982	36.2 °C10 August 1982	1.4 °C1 December 1982	14.9 °C	757 mm	19	0
1981	38.7 °C14 June 1981	0.1 °C11 January 1981	15.3 °C	1,032 mm	33	0
1980	35.5 °C20 August 1980	-3.2 °C15 January 1980	14.6 °C	774 mm	14	4
1979	34.9 °C11 August 1979	-0.3 °C17 February 1979	14.6 °C	1,374 mm	21	2
1978	36.6 °C24 August 1978	-0.9 °C11 February 1978	14.9 °C	1,381 mm	30	3
1977	35.3 °C6 September 1977	0.6 °C23 November 1977	14.6 °C	1,342 mm	11	0
1976	36.7 °C23 July 1976	-0.4 °C27 January 1976	14.5 °C	964 mm	13	2
1975	34.1 °C30 July 1975	0.2 °C31 December 1975	14.4 °C	812 mm	10	0
1974	35.0 °C10 July 1974	0.9 °C1 January 1974	14.2 °C	1,004 mm	24	0
1973	33.9 °C26 July 1973	-0.6 °C17 February 1973	14.5 °C	1,027 mm	17	1
1972	36.2 °C13 July 1972	-0.2 °C1 January 1972	13.8 °C	1,282 mm	11	2
1971	34.0 °C10 July 1971	-2.5 °C2 January 1971	14.1 °C	1,033 mm	14	4
1970	36.2 °C4 September 1970	-2.2 °C27 December 1970	14.5 °C	987 mm	27	5
1969	36.0 °C13 July 1969	-0.6 °C14 December 1969	14.4 °C	1,357 mm	21	1
1968	37.4 °C30 June 1968	0.2 °C29 December 1968	14.8 °C	1,164 mm	15	0
1967	33.7 °C29 June 1967	-0.9 °C12 January 1967	14.5 °C	760 mm	8	5
1966	36.0 °C7 September 1966	-0.2 °C25 December 1966	14.9 °C	1,636 mm	28	1
1965	35.4 °C27 August 1965	-1.8 °C20 February 1965	14.5 °C	1,278 mm	18	7
1964	36.8 °C3 August 1964	-1.3 °C28 January 1964	14.6 °C	1,001 mm	24	6
1963	37.4 °C10 August 1963	-2.9 °C2 February 1963	14.6 °C	1,505 mm	21	5
1962	36.8 °C28 August 1962	-3.5 °C26 December 1962	14.8 °C	845 mm	27	3
1961	38.1 °C28 August 1961	-0.6 °C15 January 1961	15.7 °C	1,072 mm	27	1
1960	35.8 °C25 July 1960	-2.8 °C12 January 1960	14.7 °C	1,750 mm	12	4
1959	37.2 °C7 July 1959	0.4 °C4 January 1959	15.0 °C	1,325 mm	20	0
1958	35.5 °C4 August 1958	0.7 °C27 February 1958	14.5 °C	1,259 mm	9	0
1957	35.6 °C29 July 1957	-2.0 °C16 January 1957	14.7 °C	792 mm	24	7
1956	33.2 °C25 July 1956	-3.6 °C11 February 1956	13.5 °C	1,079 mm	9	14
1955	34.0 °C22 August 1955	-1.1 °C8 March 1955	15.5 °C	1,120 mm	14	4
1954	35.8 °C23 July 1954	-3.3 °C5 February 1954	14.3 °C	865 mm	20	16
1953	36.2 °C5 August 1953	-1.1 °C5 January 1953	15.0 °C	569 mm	35	4
1952	35.4 °C10 July 1952	-1.9 °C28 January 1952	14.6 °C	996 mm	14	2
1951	34.4 °C26 July 1951	0.1 °C30 January 1951	14.4 °C	1,177 mm	15	0
1950	34.6 °C14 August 1950	-1.2 °C30 December 1950	14.8 °C	973 mm	14	4
1949	38.3 °C28 July 1949	-1.3 °C11 January 1949	15.4 °C	597 mm	36	2
1948	34.5 °C26 June 1948	-1.4 °C22 February 1948	15.4 °C	1,056 mm	20	1
1947	34.8 °C9 June 1947	-2.8 °C26 January 1947	15.2 °C	1,273 mm	17	5
1946	38.5 °C30 July 1946	-2.4 °C22 December 1946	14.4 °C	938 mm	24	9
1945	38.6 °C23 July 1945	-3.3 °C13 January 1945	15.8 °C	777 mm	43	11
1944	36.2 °C10 August 1944	-2.8 °C24 February 1944	14.9 °C	557 mm	35	12
1943	38.5 °C15 August 1943	0.2 °C20 November 1943	15.3 °C	799 mm	42	0
1942	35.8 °C23 August 1942	-1.8 °C8 January 1942	14.5 °C	1,157 mm	28	19
1941	40.0 °C21 July 1941	-4.5 °C11 January 1941	14.8 °C	1,430 mm	43	10
1940	36.9 °C17 August 1940	-3.3 °C23 January 1940	14.6 °C	1,118 mm	30	16

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

21.1 °C

+1.3 °C

Hot days (≥ 30 °C)

37 d/yr

+14

Frost days (< 0 °C)

1 d/yr

-2

Annual rainfall

1411 mm

+386 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	14.9 °C	+1.9 °C	232 mm	+103 mm
Feb	15.9 °C	+1.7 °C	65 mm	-53 mm
Mar	16.5 °C	-0.1 °C	189 mm	+78 mm
Apr	19.6 °C	+1.3 °C	175 mm	+79 mm
May	22.2 °C	+1.5 °C	74 mm	-6 mm
Jun	27.1 °C	+2.8 °C	12 mm	-23 mm
Jul	29.2 °C	+2.1 °C	7 mm	-5 mm
Aug	29.0 °C	+1.7 °C	5 mm	-10 mm
Sep	24.8 °C	-0.4 °C	37 mm	-15 mm
Oct	23.5 °C	+2.5 °C	146 mm	+30 mm
Nov	16.5 °C	+0.3 °C	302 mm	+175 mm
Dec	14.0 °C	+0.5 °C	168 mm	+33 mm

The year's extremes

Hottest day

36.6 °C

3 Aug 2025

Coldest day

-0.4 °C

15 Jan 2025

Wettest day

82.8 mm

13 Nov 2025

Windiest day

48.5 km/h

20 Mar 2025

Strongest gust

83.9 km/h

20 Mar 2025

Hottest feels-like

40.0 °C

29 Jun 2025

Coldest feels-like

-4.1 °C

15 Jan 2025

Sunniest day

14.9 h

10 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 Eirol?

Eirol has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 1,025 mm of precipitation per year.

What is the hottest day ever recorded in Eirol?

The hottest day measured in Eirol between 1940 and 2025 was 13 July 2022, reaching 40.8 °C.

What is the coldest day in Eirol?

The coldest day measured in Eirol between 1940 and 2025 was 11 January 1941, at -4.5 °C.

Does it snow in Eirol?

Almost never: Eirol sees virtually no snow, with about 3 frost days per year.

Has the climate of Eirol warmed?

Yes: Eirol warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Eirol?

The wettest day measured in Eirol between 1940 and 2025 was 13 November 2025, with 83 mm of rain in 24 hours.

What was the windiest day in Eirol?

The windiest day measured in Eirol between 1940 and 2025 was 15 February 1941, with winds reaching 58.5 km/h.

What is the warmest month in Eirol?

The warmest month in Eirol is July (21.2 °C on average); the coldest is January (9.0 °C).

How much does it rain in Eirol?

Eirol receives on average 1,025 mm of precipitation per year, spread over about 108 rainy days.

Is it sunny in Eirol?

Eirol 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 Eirol?

The heaviest 24-hour snowfall measured in Eirol between 1940 and 2025 was 23 February 1956, with 6.2 cm.

Are there tropical nights in Eirol?

Yes: Eirol has on average 4 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Eirol?

In Eirol, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 14 June 1981, and the lowest was -9.1 °C on 11 January 1941.

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