Portugal · 1991–2020

Best time to visit
Guimarães.

July leads for comfortable weather in Guimarães: typically 24.3°C by day, 15.4°C at night, with 20 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high24.3°C

Typical low15.4°C

Rain in July20 mm

Comfort

July

July · August · June

98climate match

Beach

August

August · July · June

73climate match

Outdoors

June

June · May · July

82climate match

The weakest month is January, scoring 28 against July’s 98 — days reach only 13.9°C, 10° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

2813.9° / 6.2°

Feb

4215.1° / 6.8°

Mar

5317.3° / 8.8°

Apr

5617.9° / 9.8°

May

6820° / 12°

Jun

9422.9° / 14.5°

Jul

9824.3° / 15.4°

Aug

9625° / 15.7°

Sep

8723° / 14.6°

Oct

6020.2° / 12.5°

Nov

3716.6° / 9.2°

Dec

2814.4° / 7.3°

Monthly climate evidence for Guimarães — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 45 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	13.9°C	6.2°C	144 mm	12	13.6°C	9 h 29	28	Good coverage
February	15.1°C	6.8°C	89 mm	9.6	13.2°C	10 h 32	42	Good coverage
March	17.3°C	8.8°C	96 mm	9.2	13.6°C	11 h 48	53	Good coverage
April	17.9°C	9.8°C	93 mm	10.2	14.4°C	13 h 16	56	Good coverage
May	20°C	12°C	90 mm	9.4	15.5°C	14 h 29	68	Good coverage
June	22.9°C	14.5°C	31 mm	4.6	16.7°C	15 h 09	94	Good coverage
July	24.3°C	15.4°C	20 mm	3.4	17.1°C	14 h 53	98	Good coverage
August	25°C	15.7°C	31 mm	3.1	17.3°C	13 h 50	96	Good coverage
September	23°C	14.6°C	76 mm	6.7	17.4°C	12 h 25	87	Good coverage
October	20.2°C	12.5°C	144 mm	11.6	16.6°C	11 h 01	60	Good coverage
November	16.6°C	9.2°C	171 mm	12.6	15.5°C	9 h 48	37	Good coverage
December	14.4°C	7.3°C	161 mm	12.7	14.3°C	9 h 11	28	Good coverage

Records at PORTO, 1941–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.7°C2 Jan 2022	-4.1°C11 Jan 1941	87 mm18 Jan 2003	391 mm1970 · driest 4 mm in 1981	72
February	29.0°C27 Feb 1960	-3.8°C20 Feb 1956	68 mm15 Feb 1978	475 mm1966 · driest 12 mm in 2005	73
March	29.1°C22 Mar 2002	-2.3°C1 Mar 2005	80 mm20 Mar 2001	495 mm2001 · driest 0 mm in 1997	73
April	31.9°C28 Apr 1947	0.1°C6 Apr 1975	64 mm17 Apr 1968	294 mm2000 · driest 6 mm in 1957	71
May	34.7°C9 May 1965	2.6°C1 May 1972	85 mm27 May 1956	239 mm1994 · driest 1 mm in 1991	71
June	38.3°C13 Jun 1981	5.9°C11 Jun 1972	69 mm25 Jun 1958	253 mm1974 · driest 1 mm in 2021	72
July	39.9°C30 Jul 1944	8.8°C16 Jul 1948	43 mm9 Jul 1941	96 mm1941 · driest 0 mm in 1978	72
August	39.4°C14 Aug 1943	7.4°C5 Aug 1986	53 mm9 Aug 2004	177 mm2004 · driest 0 mm in 1978	71
September	36.8°C4 Sep 1970	5.5°C29 Sep 1974	106 mm13 Sep 1986	244 mm2002 · driest 1 mm in 1997	71
October	34.4°C12 Oct 1955	1.4°C31 Oct 1974	87 mm14 Oct 1990	435 mm1960 · driest 7 mm in 1941	71
November	27.7°C1 Nov 1970	-1.3°C19 Nov 1952	101 mm27 Nov 1953	417 mm1984 · driest 0 mm in 1981	71
December	24.8°C1 Dec 1985	-2.5°C30 Dec 1950	84 mm23 Dec 1978	624 mm1978 · driest 7 mm in 1988	71

Typical days per month at PORTO, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	1	5
February	0	0	<1	3
March	1	0	<1	3
April	2	<1	0	3
May	4	1	0	3
June	7	2	0	<1
July	10	3	0	<1
August	11	4	0	<1
September	7	2	0	2
October	3	<1	0	5
November	<1	0	0	6
December	0	0	<1	6

How often, not how much — every day in PORTO’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	<1%	43%	19%	55%	12.3–14.9°C
February	5%	41%	16%	51%	12.8–16.3°C
March	16%	36%	14%	47%	14.8–19.0°C
April	25%	33%	11%	43%	15.9–20.9°C
May	34%	30%	10%	35%	17.5–22.0°C
June	69%	17%	4%	17%	21.1–24.8°C
July	88%	9%	2%	6%	22.8–26.6°C
August	88%	11%	3%	9%	23.0–26.9°C
September	73%	21%	7%	26%	21.6–25.7°C
October	44%	33%	15%	45%	18.6–22.9°C
November	12%	39%	18%	52%	15.3–18.6°C
December	<1%	41%	19%	52%	12.8–15.4°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1941Each stripe is one year’s mean temperature against the 70-year average. Warmest: 1997. Coolest: 1956.2010

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2738752
NOAA station: PO000008546 · PORTO
Station distance: 42.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 20 usable years
Daylight: Calculated from latitude 41.44°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 45 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from PORTO is what differs

Porto→Braga→Vila Nova de Gaia→Felgueiras→Rio Tinto→Paranhos→

Or put two places side by side: Guimarães vs Porto

Best time to visitGuimarães.