Portugal · 1991–2020

Best time to visit
Eiras.

June leads for comfortable weather in Eiras: typically 26.5°C by day, 14.5°C at night, with 25 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high26.5°C

Typical low14.5°C

Rain in June25 mm

Comfort

June

June · July · September

90climate match

Beach

August

August · July · June

86climate match

Outdoors

March

March · April · May

83climate match

The weakest month is January, scoring 35 against June’s 90 — days reach only 15°C, 9° 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

3515° / 5.3°

Feb

4716.4° / 5.7°

Mar

6319.5° / 8°

Apr

6520.4° / 9.2°

May

8123° / 11.7°

Jun

9026.5° / 14.5°

Jul

8428.4° / 15.6°

Aug

8228.9° / 15.9°

Sep

8326.7° / 14.2°

Oct

6922.5° / 11.9°

Nov

4717.7° / 8.3°

Dec

3615.3° / 6.3°

Monthly climate evidence for Eiras — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 41 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	15°C	5.3°C	115 mm	10.7	14.1°C	9 h 36	35	Good coverage
February	16.4°C	5.7°C	77 mm	8.5	13.7°C	10 h 36	47	Good coverage
March	19.5°C	8°C	69 mm	8.6	14.0°C	11 h 49	63	Good coverage
April	20.4°C	9.2°C	79 mm	10.3	14.9°C	13 h 13	65	Good coverage
May	23°C	11.7°C	70 mm	9.1	16.1°C	14 h 23	81	Good coverage
June	26.5°C	14.5°C	25 mm	3.4	17.7°C	15 h 01	90	Good coverage
July	28.4°C	15.6°C	10 mm	1.8	18.1°C	14 h 46	84	Good coverage
August	28.9°C	15.9°C	16 mm	2.5	18.4°C	13 h 46	82	Good coverage
September	26.7°C	14.2°C	61 mm	6.1	18.3°C	12 h 24	83	Good coverage
October	22.5°C	11.9°C	127 mm	10.8	17.3°C	11 h 04	69	Good coverage
November	17.7°C	8.3°C	123 mm	11.2	16.1°C	9 h 53	47	Good coverage
December	15.3°C	6.3°C	119 mm	11.8	14.8°C	9 h 19	36	Good coverage

Records at COIMBRA, 1901–2010
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	24.4°C31 Jan 1948	-4.5°C15 Jan 1985	67 mm2 Jan 2003	343 mm2001 · driest 2 mm in 1981	108
February	26.2°C26 Feb 1926	-4.0°C20 Feb 1956	61 mm15 Feb 1963	338 mm1947 · driest 6 mm in 2000	108
March	30.6°C20 Mar 1945	-3.0°C1 Mar 1993	61 mm11 Mar 1954	266 mm1954 · driest 0 mm in 1997	108
April	36.4°C29 Apr 1924	0.2°C9 Apr 1986	64 mm2 Apr 1960	214 mm2000 · driest 14 mm in 1957	108
May	38.0°C15 May 1964	1.5°C1 May 1925	55 mm20 May 1956	168 mm1994 · driest 0 mm in 1991	108
June	41.6°C13 Jun 1981	5.6°C4 Jun 1975	50 mm26 Jun 1974	153 mm1974 · driest 1 mm in 1943	108
July	45.8°C30 Jul 1944	7.5°C10 Jul 1980	61 mm4 Jul 1966	65 mm1988 · driest 0 mm in 1954	108
August	43.7°C15 Aug 1943	6.5°C29 Aug 1986	51 mm19 Aug 1977	67 mm1944 · driest 0 mm in 1998	108
September	40.0°C7 Sep 1926	4.3°C29 Sep 1974	75 mm16 Sep 1993	176 mm2002 · driest 1 mm in 1955	108
October	36.7°C1 Oct 1948	1.2°C30 Oct 1974	92 mm24 Oct 2006	312 mm1960 · driest 4 mm in 1941	108
November	30.4°C1 Nov 1970	-0.9°C19 Nov 1943	76 mm14 Nov 1963	458 mm1963 · driest 0 mm in 1981	108
December	25.2°C1 Dec 1985	-3.0°C25 Dec 2001	79 mm29 Dec 1961	346 mm1978 · driest 3 mm in 2001	108

Typical days per month at COIMBRA, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	3	4
February	<1	0	1	3
March	4	<1	<1	2
April	5	<1	0	3
May	9	3	0	2
June	19	7	0	<1
July	26	9	0	<1
August	28	11	0	<1
September	20	6	0	2
October	8	1	0	5
November	<1	0	<1	5
December	0	0	3	4

How often, not how much — every day in COIMBRA’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	3%	39%	15%	48%	12.3–15.7°C
February	11%	37%	14%	46%	13.2–17.7°C
March	31%	33%	11%	43%	15.1–20.6°C
April	43%	34%	9%	44%	17.3–22.6°C
May	60%	29%	9%	35%	19.9–24.9°C
June	82%	16%	4%	15%	23.4–28.5°C
July	94%	6%	1%	2%	26.3–30.1°C
August	92%	8%	2%	6%	27.0–31.0°C
September	81%	18%	5%	22%	24.1–29.0°C
October	58%	31%	12%	41%	19.6–25.2°C
November	20%	36%	14%	47%	15.3–19.2°C
December	2%	38%	15%	49%	12.6–15.9°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.

1901Each stripe is one year’s mean temperature against the 107-year average. Warmest: 1949. Coolest: 1972.2010

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2740057
NOAA station: PO000008549 · COIMBRA
Station distance: 5.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 20 usable years
Daylight: Calculated from latitude 40.25°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 41 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 COIMBRA is what differs

Coimbra→Figueira da Foz→Santo António dos Olivais→Pombal→Ílhavo→São Paulo de Frades→

Or put two places side by side: Eiras vs Coimbra

Best time to visitEiras.