Cartaxo climate — normals and trends

Q: What is the climate of Cartaxo?

Cartaxo has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 617 mm of precipitation per year.

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

The hottest day measured in Cartaxo between 1940 and 2025 was 1 August 2003, reaching 45.7 °C.

Q: What is the coldest day in Cartaxo?

The coldest day measured in Cartaxo between 1940 and 2025 was 15 January 1945, at -7.4 °C.

Q: Does it snow in Cartaxo?

Almost never: Cartaxo sees virtually no snow, with about 2 frost days per year.

Q: Has the climate of Cartaxo warmed?

Yes: Cartaxo warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Cartaxo?

The wettest day measured in Cartaxo between 1940 and 2025 was 13 November 2025, with 77 mm of rain in 24 hours.

Q: What was the windiest day in Cartaxo?

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

Q: What is the warmest month in Cartaxo?

The warmest month in Cartaxo is August (22.1 °C on average); the coldest is January (9.7 °C).

Q: How much does it rain in Cartaxo?

Cartaxo receives on average 617 mm of precipitation per year, spread over about 83 rainy days.

Q: Is it sunny in Cartaxo?

Cartaxo gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.

Cartaxo (Portugal) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 15.8 °C and it receives 617 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 (22.1 °C on average) and the coldest is January (9.7 °C). Rainfall peaks in December.

Cartaxo averages 2 frost days, 38 hot days (≥ 30 °C) and 83 rainy days per year.

Cartaxo has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.

The number of frost days there went from about 4 to 0 per year over the period.

The hottest day of the period reached 45.7 °C (on 1 August 2003) and the coldest -7.4 °C (on 15 January 1945).

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

CartaxoSantarém District

coords: 39.16°, -8.79°
period: 1940–2025 · 86 yrs

CsaHot-summer MediterraneanWarmest monthAugustColdest monthJanuaryWettest monthDecemberDriest monthJuly

Mean daily temperature

15.8°C

Average daily high

21.0°C

Average daily low

11.5°C

Annual rainfall

617mm

Sunshine / day

10.3h

Mean relative humidity

73%

Average peak wind

19.4km/h

Seasonal range

12.4°C

Frost days (< 0 °C)

2 d/yr

Hot days (≥ 30 °C)

38 d/yr

Rainy days (≥ 1 mm)

83 d/yr

Annual snowfall

0.2 cm

Average feels-like high

19.8 °C

Average feels-like low

9.8 °C

Average peak gust

38.3 km/h

Tropical nights (≥ 20 °C)

7 d/yr

Solar radiation

17.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.1 °C

since 1940

+0.1 °C per decade · r² = 0.27 · 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

45.7 °C

1 August 2003

Coldest day

-7.4 °C

15 January 1945

Wettest day

77 mm

13 November 2025

Windiest day

64.4 km/h

15 February 1941

Strongest gust

117.4 km/h

19 January 2013

Hottest feels-like

46.5 °C

1 August 2003

Coldest feels-like

-11.9 °C

15 January 1945

Snowiest day

5.3 cm

13 January 1945

Sunniest day

14.8 h

16 June 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	39.9 °C29 June 2025	-0.7 °C15 January 2025	16.9 °C	939 mm	54	1
2024	39.0 °C23 July 2024	1.4 °C8 January 2024	16.9 °C	579 mm	36	0
2023	42.2 °C7 August 2023	-0.8 °C2 March 2023	17.1 °C	372 mm	51	2
2022	42.3 °C13 July 2022	1.6 °C20 January 2022	17.1 °C	607 mm	51	0
2021	36.6 °C15 July 2021	-3.3 °C13 January 2021	16.2 °C	566 mm	23	5
2020	40.1 °C16 July 2020	-2.3 °C27 December 2020	16.7 °C	533 mm	49	1
2019	37.3 °C11 July 2019	-0.8 °C6 January 2019	16.3 °C	461 mm	34	2
2018	43.4 °C4 August 2018	0.7 °C8 February 2018	16.0 °C	642 mm	47	0
2017	41.2 °C17 June 2017	-2.1 °C20 January 2017	16.7 °C	426 mm	51	3
2016	41.2 °C7 August 2016	0.0 °C17 February 2016	16.4 °C	661 mm	57	0
2015	38.3 °C20 June 2015	-1.1 °C8 January 2015	16.5 °C	397 mm	46	2
2014	36.6 °C14 June 2014	1.0 °C31 December 2014	16.2 °C	795 mm	25	0
2013	40.1 °C4 July 2013	0.1 °C8 December 2013	16.0 °C	621 mm	53	0
2012	40.9 °C17 July 2012	-0.3 °C31 January 2012	15.9 °C	471 mm	38	2
2011	39.3 °C26 June 2011	1.8 °C1 February 2011	16.5 °C	612 mm	42	0
2010	40.4 °C9 August 2010	-0.1 °C13 February 2010	16.2 °C	887 mm	57	1
2009	38.4 °C30 August 2009	-3.9 °C9 January 2009	16.5 °C	635 mm	46	6
2008	37.2 °C18 July 2008	2.5 °C1 January 2008	15.8 °C	498 mm	29	0
2007	40.9 °C29 July 2007	0.0 °C17 December 2007	15.8 °C	363 mm	33	0
2006	39.6 °C16 July 2006	-1.4 °C30 January 2006	16.5 °C	718 mm	51	2
2005	40.5 °C5 August 2005	-1.4 °C1 March 2005	16.2 °C	453 mm	56	2
2004	38.5 °C24 July 2004	0.8 °C9 December 2004	16.0 °C	398 mm	48	0
2003	45.7 °C1 August 2003	-2.2 °C15 January 2003	16.3 °C	671 mm	44	6
2002	38.0 °C17 July 2002	1.1 °C17 January 2002	15.9 °C	727 mm	23	0
2001	37.6 °C19 June 2001	-0.3 °C28 December 2001	16.0 °C	636 mm	36	1
2000	38.6 °C16 July 2000	-1.7 °C23 January 2000	16.0 °C	693 mm	40	2
1999	39.4 °C8 July 1999	0.9 °C13 January 1999	15.7 °C	496 mm	28	0
1998	39.0 °C5 August 1998	-1.0 °C5 December 1998	16.1 °C	469 mm	33	3
1997	39.5 °C26 July 1997	-1.1 °C6 January 1997	16.9 °C	837 mm	31	1
1996	36.9 °C10 July 1996	-0.1 °C23 February 1996	15.8 °C	852 mm	37	1
1995	41.2 °C23 July 1995	-0.2 °C16 January 1995	17.3 °C	497 mm	46	1
1994	37.8 °C22 June 1994	-2.0 °C26 December 1994	15.8 °C	438 mm	24	2
1993	40.9 °C23 July 1993	-0.3 °C3 January 1993	15.1 °C	604 mm	33	2
1992	38.9 °C6 August 1992	-1.1 °C24 January 1992	15.6 °C	383 mm	36	1
1991	42.1 °C18 July 1991	0.0 °C15 January 1991	15.9 °C	513 mm	59	0
1990	41.0 °C18 July 1990	-1.0 °C23 December 1990	16.3 °C	525 mm	42	1
1989	40.0 °C27 July 1989	0.5 °C2 January 1989	16.7 °C	794 mm	52	0
1988	40.7 °C6 September 1988	-0.5 °C16 December 1988	15.6 °C	607 mm	32	1
1987	39.8 °C2 August 1987	-0.2 °C22 February 1987	16.4 °C	729 mm	50	1
1986	38.6 °C20 July 1986	-0.1 °C10 February 1986	15.3 °C	461 mm	30	1
1985	38.0 °C23 July 1985	-2.9 °C12 January 1985	15.7 °C	764 mm	47	6
1984	39.0 °C31 August 1984	-0.4 °C11 January 1984	15.3 °C	566 mm	34	1
1983	38.6 °C6 September 1983	-2.2 °C15 February 1983	15.7 °C	575 mm	27	4
1982	38.7 °C10 August 1982	0.0 °C1 December 1982	15.5 °C	458 mm	27	0
1981	43.9 °C14 June 1981	0.8 °C3 January 1981	16.3 °C	496 mm	47	0
1980	37.5 °C21 August 1980	-1.1 °C3 December 1980	15.4 °C	431 mm	31	2
1979	38.7 °C11 August 1979	-0.4 °C17 February 1979	15.4 °C	788 mm	35	1
1978	37.6 °C24 August 1978	-4.3 °C21 December 1978	14.1 °C	771 mm	31	8
1977	37.1 °C6 September 1977	-1.1 °C24 November 1977	15.1 °C	807 mm	21	2
1976	37.2 °C19 July 1976	1.7 °C27 January 1976	15.2 °C	567 mm	27	0
1975	36.8 °C29 July 1975	0.5 °C9 January 1975	15.0 °C	548 mm	21	0
1974	38.9 °C11 July 1974	0.8 °C5 March 1974	15.1 °C	482 mm	35	0
1973	36.0 °C2 September 1973	0.1 °C10 January 1973	15.3 °C	638 mm	33	0
1972	38.5 °C13 July 1972	1.5 °C31 December 1972	14.4 °C	932 mm	13	0
1971	36.2 °C6 July 1971	-2.0 °C2 January 1971	15.0 °C	576 mm	24	3
1970	39.1 °C5 September 1970	-0.8 °C24 December 1970	15.4 °C	608 mm	36	3
1969	38.5 °C13 July 1969	-0.6 °C14 December 1969	15.2 °C	838 mm	41	1
1968	41.3 °C29 June 1968	1.5 °C29 December 1968	15.7 °C	748 mm	32	0
1967	34.7 °C29 June 1967	-1.4 °C12 January 1967	15.2 °C	481 mm	20	4
1966	39.7 °C12 July 1966	0.2 °C24 December 1966	15.8 °C	727 mm	45	0
1965	37.0 °C27 August 1965	-2.7 °C20 February 1965	15.4 °C	808 mm	32	1
1964	39.8 °C3 August 1964	-1.6 °C30 December 1964	15.7 °C	518 mm	49	3
1963	37.2 °C28 July 1963	-2.2 °C24 December 1963	15.4 °C	985 mm	28	4
1962	39.1 °C28 August 1962	-0.9 °C25 December 1962	15.5 °C	591 mm	38	2
1961	40.2 °C27 August 1961	-0.8 °C15 January 1961	16.4 °C	646 mm	46	1
1960	38.2 °C24 July 1960	-2.5 °C12 January 1960	15.4 °C	842 mm	28	1
1959	39.7 °C7 July 1959	0.3 °C5 February 1959	15.6 °C	821 mm	26	0
1958	38.5 °C4 August 1958	1.2 °C18 January 1958	15.5 °C	674 mm	21	0
1957	37.3 °C1 August 1957	-1.5 °C17 December 1957	15.3 °C	520 mm	31	5
1956	36.5 °C21 June 1956	-2.9 °C14 February 1956	14.4 °C	778 mm	16	13
1955	35.2 °C23 June 1955	0.3 °C12 March 1955	16.4 °C	729 mm	30	0
1954	38.7 °C24 July 1954	-3.4 °C5 February 1954	15.1 °C	431 mm	24	12
1953	37.7 °C5 August 1953	-1.8 °C11 January 1953	15.8 °C	510 mm	47	4
1952	37.9 °C10 July 1952	-0.7 °C28 January 1952	15.4 °C	616 mm	27	2
1951	36.5 °C27 July 1951	0.8 °C11 January 1951	15.2 °C	667 mm	28	0
1950	37.6 °C28 June 1950	0.2 °C30 December 1950	15.6 °C	528 mm	30	0
1949	39.4 °C4 July 1949	-0.2 °C1 February 1949	16.2 °C	508 mm	44	1
1948	37.6 °C25 June 1948	0.9 °C22 February 1948	16.2 °C	656 mm	31	0
1947	36.6 °C2 July 1947	-2.0 °C31 January 1947	16.0 °C	658 mm	36	6
1946	40.9 °C10 July 1946	-3.0 °C22 December 1946	15.2 °C	607 mm	36	7
1945	40.0 °C23 July 1945	-7.4 °C15 January 1945	16.7 °C	453 mm	59	10
1944	38.4 °C31 July 1944	-0.7 °C5 January 1944	15.9 °C	270 mm	52	5
1943	39.8 °C16 August 1943	0.2 °C15 January 1943	16.0 °C	602 mm	50	0
1942	39.6 °C17 July 1942	-1.5 °C4 January 1942	15.3 °C	764 mm	44	9
1941	43.2 °C21 July 1941	-2.7 °C6 January 1941	15.7 °C	853 mm	62	7
1940	37.5 °C16 August 1940	-2.9 °C23 January 1940	15.3 °C	665 mm	42	12

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

22.3 °C

+1.3 °C

Hot days (≥ 30 °C)

54 d/yr

+16

Frost days (< 0 °C)

1 d/yr

-1

Annual rainfall

939 mm

+322 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	15.5 °C	+1.9 °C	146 mm	+69 mm
Feb	16.4 °C	+1.5 °C	51 mm	-21 mm
Mar	16.7 °C	-0.7 °C	187 mm	+116 mm
Apr	20.1 °C	+0.8 °C	121 mm	+62 mm
May	23.7 °C	+1.6 °C	36 mm	-12 mm
Jun	29.5 °C	+3.4 °C	6 mm	-12 mm
Jul	30.5 °C	+1.6 °C	1 mm	-3 mm
Aug	31.4 °C	+2.4 °C	0 mm	-6 mm
Sep	26.8 °C	0.0 °C	15 mm	-15 mm
Oct	25.2 °C	+3.0 °C	46 mm	-23 mm
Nov	17.2 °C	+0.2 °C	213 mm	+131 mm
Dec	14.4 °C	+0.3 °C	117 mm	+35 mm

The year's extremes

Hottest day

39.9 °C

29 Jun 2025

Coldest day

-0.7 °C

15 Jan 2025

Wettest day

77.2 mm

13 Nov 2025

Windiest day

47.9 km/h

20 Mar 2025

Strongest gust

97.2 km/h

20 Mar 2025

Hottest feels-like

42.0 °C

29 Jun 2025

Coldest feels-like

-4.3 °C

15 Jan 2025

Sunniest day

14.8 h

16 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 Cartaxo?

Cartaxo has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 15.8 °C and it receives 617 mm of precipitation per year.

What is the hottest day ever recorded in Cartaxo?

The hottest day measured in Cartaxo between 1940 and 2025 was 1 August 2003, reaching 45.7 °C.

What is the coldest day in Cartaxo?

The coldest day measured in Cartaxo between 1940 and 2025 was 15 January 1945, at -7.4 °C.

Does it snow in Cartaxo?

Almost never: Cartaxo sees virtually no snow, with about 2 frost days per year.

Has the climate of Cartaxo warmed?

Yes: Cartaxo warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Cartaxo?

The wettest day measured in Cartaxo between 1940 and 2025 was 13 November 2025, with 77 mm of rain in 24 hours.

What was the windiest day in Cartaxo?

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

What is the warmest month in Cartaxo?

The warmest month in Cartaxo is August (22.1 °C on average); the coldest is January (9.7 °C).

How much does it rain in Cartaxo?

Cartaxo receives on average 617 mm of precipitation per year, spread over about 83 rainy days.

Is it sunny in Cartaxo?

Cartaxo gets on average 10.3 hours of sunshine per day, roughly 3,760 hours per year over 1940-2025.

What is the biggest single-day snowfall in Cartaxo?

The heaviest 24-hour snowfall measured in Cartaxo between 1940 and 2025 was 13 January 1945, with 5.3 cm.

Are there tropical nights in Cartaxo?

Yes: Cartaxo has on average 7 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Cartaxo?

In Cartaxo, between 1940 and 2025, the highest apparent temperature reached 46.5 °C on 1 August 2003, and the lowest was -11.9 °C on 15 January 1945.

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