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Germany · 1991–2020

Best time to visit
Altenahr.

August leads for comfortable weather in Altenahr: typically 25.1°C by day, 13.1°C at night, with 64 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high25.1°C

Typical low13.1°C

Rain in August64 mm

Comfort

August

August · July · June

84climate match

Beach

July

July · August · June

56climate match

Outdoors

September

September · May · June

88climate match

The weakest month is January, scoring 5 against August’s 84 — days reach only 5.9°C, 18° 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

55.9° / -0.3°

Feb

107.3° / -0.2°

Mar

2711.4° / 2.1°

Apr

4915.9° / 4.6°

May

6519.8° / 8.4°

Jun

8022.9° / 11.6°

Jul

8325.2° / 13.5°

Aug

8425.1° / 13.1°

Sep

7220.7° / 9.6°

Oct

4815.5° / 6°

Nov

2410° / 2.9°

Dec

56.5° / 0.5°

Monthly climate evidence for Altenahr — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.9°C	-0.3°C	46 mm	10.2	8 h 27	5	Strong coverage
February	7.3°C	-0.2°C	42 mm	9.7	9 h 57	10	Strong coverage
March	11.4°C	2.1°C	48 mm	10.3	11 h 42	27	Strong coverage
April	15.9°C	4.6°C	39 mm	8.3	13 h 43	49	Strong coverage
May	19.8°C	8.4°C	58 mm	9.7	15 h 27	65	Strong coverage
June	22.9°C	11.6°C	63 mm	10.2	16 h 26	80	Strong coverage
July	25.2°C	13.5°C	62 mm	9.9	16 h 02	83	Strong coverage
August	25.1°C	13.1°C	64 mm	8.6	14 h 31	84	Strong coverage
September	20.7°C	9.6°C	53 mm	8.4	12 h 33	72	Strong coverage
October	15.5°C	6°C	49 mm	9.2	10 h 37	48	Strong coverage
November	10°C	2.9°C	46 mm	9.9	8 h 54	24	Strong coverage
December	6.5°C	0.5°C	53 mm	12	8 h 01	5	Strong coverage

What has changed

Altenahr runs +2.1°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

+1.9

Feb

+2.1

Mar

+2.6

Apr

+2.6

May

+1.7

Jun

+2.3

Jul

+2.4

Aug

+3.0

Sep

+1.5

Oct

+1.2

Nov

+1.3

Dec

+2.3

August daytime highs, 2011–2025. Last recorded: 26.0°C.

Records at BAD-AHRWEILER NEUENAHR, 1948–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.9°C5 Jan 1999	-20.3°C19 Jan 1963	27 mm19 Jan 2004	130 mm1995 · driest 5 mm in 1996	79
February	21.3°C25 Feb 2021	-21.8°C16 Feb 1956	32 mm26 Feb 1990	111 mm1990 · driest 2 mm in 1959	79
March	26.6°C31 Mar 2021	-14.1°C2 Mar 1955	37 mm5 Mar 2009	123 mm1988 · driest 8 mm in 2014	79
April	30.5°C21 Apr 1968	-6.4°C2 Apr 2013	40 mm2 Apr 1984	132 mm1989 · driest 0 mm in 2007	79
May	33.4°C28 May 2005	-2.7°C4 May 1967	84 mm2 May 2024	215 mm2024 · driest 14 mm in 2020	79
June	40.4°C26 Jun 2026	1.6°C2 Jun 1975	66 mm20 Jun 2013	141 mm1987 · driest 12 mm in 1962	78
July	40.4°C25 Jul 2019	4.0°C2 Jul 1960	53 mm10 Jul 1980	193 mm2014 · driest 13 mm in 1949	76
August	38.9°C12 Aug 2003	4.5°C29 Aug 1993	65 mm20 Aug 1969	229 mm1969 · driest 9 mm in 2016	77
September	34.5°C15 Sep 2020	0.1°C30 Sep 2018	43 mm15 Sep 1986	152 mm1984 · driest 2 mm in 1959	77
October	29.0°C2 Oct 2023	-7.0°C28 Oct 1997	46 mm7 Oct 1982	137 mm1982 · driest 3 mm in 1969	77
November	22.4°C1 Nov 1968	-12.5°C16 Nov 1965	37 mm22 Nov 1984	111 mm1977 · driest 1 mm in 2011	77
December	19.0°C18 Dec 1987	-20.1°C30 Dec 1950	40 mm21 Dec 1960	133 mm1993 · driest 8 mm in 1972	78

Typical days per month at BAD-AHRWEILER NEUENAHR, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	16	<1
February	0	0	14	<1
March	0	0	9	<1
April	2	0	4	<1
May	5	<1	0	1
June	10	2	0	2
July	15	5	0	2
August	14	4	0	2
September	5	<1	0	1
October	<1	0	3	1
November	0	0	8	<1
December	0	0	14	1

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 89); on 2011–2025 it is June (90). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in BAD-AHRWEILER NEUENAHR’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	0%	35%	3%	44%	2.1–8.3°C
February	<1%	34%	3%	44%	3.4–10.2°C
March	2%	32%	3%	42%	7.5–13.9°C
April	14%	33%	3%	43%	12.5–18.0°C
May	33%	34%	5%	45%	16.3–21.5°C
June	49%	33%	6%	44%	20.3–24.6°C
July	58%	33%	6%	42%	21.4–27.1°C
August	62%	30%	6%	37%	21.6–26.6°C
September	41%	29%	4%	37%	18.2–23.0°C
October	11%	29%	4%	38%	13.5–17.7°C
November	<1%	35%	3%	47%	7.5–12.3°C
December	0%	36%	3%	49%	2.7–8.7°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.

1948Each stripe is one year’s mean temperature against the 75-year average. Warmest: 2023. Coolest: 1956.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2957883
NOAA station: GME00126466 · BAD-AHRWEILER NEUENAHR
Station distance: 6.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 50.52°, mid-month, sunrise to sunset including refraction. Not a station measurement.
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 BAD-AHRWEILER NEUENAHR is what differs

Bad Neuenahr-Ahrweiler→Rheinbach→Meckenheim→Wachtberg→Sinzig→Remagen→

Or put two places side by side: Altenahr vs Bad Neuenahr-Ahrweiler

Best time to visitAltenahr.