Portugal · 1991–2020

Best time to visit
Areeiro.

June leads for comfortable weather in Areeiro: typically 25.7°C by day, 16.9°C at night, with 13 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high25.7°C

Typical low16.9°C

Rain in June13 mm

Comfort

June

June · May · September

91climate match

Beach

August

August · July · September

92climate match

Outdoors

April

April · March · May

84climate match

The weakest month is January, scoring 43 against June’s 91 — days reach only 14.9°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

4314.9° / 8.7°

Feb

5416.1° / 9.2°

Mar

6618.6° / 11°

Apr

7320.1° / 12.3°

May

8922.6° / 14.5°

Jun

9125.7° / 16.9°

Jul

8227.7° / 18.3°

Aug

7928.3° / 18.9°

Sep

8726.2° / 17.7°

Oct

7922.6° / 15.4°

Nov

5617.9° / 11.9°

Dec

4515.2° / 9.6°

Monthly climate evidence for Areeiro — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 24 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	14.9°C	8.7°C	106 mm	9.9	15.2°C	9 h 44	43	Strong coverage
February	16.1°C	9.2°C	74 mm	7.7	14.6°C	10 h 41	54	Strong coverage
March	18.6°C	11°C	74 mm	7.4	14.7°C	11 h 50	66	Strong coverage
April	20.1°C	12.3°C	69 mm	8.1	15.4°C	13 h 09	73	Strong coverage
May	22.6°C	14.5°C	57 mm	5.6	16.4°C	14 h 16	89	Strong coverage
June	25.7°C	16.9°C	13 mm	1.9	17.7°C	14 h 52	91	Strong coverage
July	27.7°C	18.3°C	2 mm	0.6	18.3°C	14 h 37	82	Strong coverage
August	28.3°C	18.9°C	7 mm	1.3	18.7°C	13 h 40	79	Strong coverage
September	26.2°C	17.7°C	36 mm	3.9	18.8°C	12 h 23	87	Strong coverage
October	22.6°C	15.4°C	111 mm	8.6	18.3°C	11 h 07	79	Strong coverage
November	17.9°C	11.9°C	124 mm	9.8	17.2°C	10 h 00	56	Strong coverage
December	15.2°C	9.6°C	108 mm	9.7	16.0°C	9 h 28	45	Strong coverage

What has changed

Areeiro runs +0.8°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.6

Feb

+0.5

Mar

+0.3

Apr

+1.0

May

+2.0

Jun

+0.9

Jul

+0.4

Aug

+0.8

Sep

+0.6

Oct

+1.1

Nov

+0.2

Dec

+1.0

June daytime highs, 2011–2022. Last recorded: 25.8°C.

Records at LISBOA GEOFISICA, 1901–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.1°C1 Jan 1913	0.0°C5 Jan 1938	86 mm29 Jan 2004	368 mm1996 · driest 0 mm in 2005	121
February	25.4°C27 Feb 1960	-0.9°C5 Feb 1954	102 mm18 Feb 2008	338 mm1947 · driest 0 mm in 2000	121
March	28.3°C21 Mar 1992	0.7°C1 Mar 2005	83 mm12 Mar 1969	267 mm2013 · driest 0 mm in 1966	120
April	32.2°C29 Apr 1997	4.3°C6 Apr 1911	57 mm17 Apr 2008	178 mm1966 · driest 0 mm in 2017	123
May	35.1°C9 May 1965	6.4°C3 May 1947	60 mm11 May 1993	156 mm1994 · driest 0 mm in 2006	123
June	41.5°C13 Jun 1981	9.5°C1 Jun 1902	40 mm14 Jun 2006	98 mm1970 · driest 0 mm in 1994	123
July	40.6°C17 Jul 1991	12.1°C12 Jul 1956	34 mm3 Jul 1988	43 mm1988 · driest 0 mm in 1993	123
August	42.0°C4 Aug 2018	11.2°C25 Aug 1918	31 mm31 Aug 2011	59 mm1976 · driest 0 mm in 1953	122
September	38.0°C5 Sep 2016	10.3°C3 Sep 1956	58 mm18 Sep 1999	132 mm1943 · driest 0 mm in 1955	122
October	34.4°C12 Oct 1955	6.7°C31 Oct 1935	93 mm18 Oct 1997	283 mm1965 · driest 1 mm in 1985	122
November	27.8°C2 Nov 1970	2.9°C25 Nov 1901	96 mm18 Nov 1983	376 mm1997 · driest 3 mm in 1981	120
December	23.2°C1 Dec 1985	0.0°C26 Dec 1926	91 mm6 Dec 2012	388 mm1989 · driest 14 mm in 1980	121

Typical days per month at LISBOA GEOFISICA, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	0	0	4
February	0	0	2
March	1	0	3
April	4	0	2
May	8	2	2
June	15	5	<1
July	24	7	0
August	27	9	<1
September	18	5	1
October	7	<1	3
November	0	0	4
December	0	0	4

The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 96); on 2011–2025 it is May (98). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in LISBOA GEOFISICA’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%	34%	12%	43%	12.7–15.6°C
February	4%	33%	11%	40%	13.7–17.4°C
March	24%	28%	9%	34%	15.3–19.8°C
April	40%	26%	7%	31%	17.2–21.3°C
May	63%	18%	5%	18%	19.5–24.4°C
June	89%	8%	2%	5%	22.7–27.1°C
July	98%	2%	<1%	<1%	25.4–28.9°C
August	96%	4%	<1%	2%	26.1–29.7°C
September	87%	13%	3%	14%	23.5–28.0°C
October	64%	26%	9%	35%	19.6–24.2°C
November	15%	32%	12%	40%	15.9–19.1°C
December	<1%	33%	13%	42%	13.1–16.1°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 119-year average. Warmest: 1995. Coolest: 1934.2019

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2271547
NOAA station: PO000008535 · LISBOA GEOFISICA
Station distance: 2.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 38.74°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 24 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 LISBOA GEOFISICA is what differs

Lisbon→Amadora→Setúbal→Queluz→Cacém→Algueirão→

Or put two places side by side: Areeiro vs Lisbon

Best time to visitAreeiro.