Luxembourg · 1991–2020

Best time to visit
Dalheim.

August leads for comfortable weather in Dalheim: typically 25°C by day, 11.4°C at night, with 61 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high25°C

Typical low11.4°C

Rain in August61 mm

Comfort

August

August · July · June

81climate match

Beach

July

July · August · June

57climate match

Outdoors

September

September · May · June

85climate match

The weakest month is January, scoring 5 against August’s 81 — days reach only 5.5°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

55.5° / -0.8°

Feb

56.7° / -1.4°

Mar

2511.6° / 0.2°

Apr

4916.7° / 2.2°

May

6120° / 6.4°

Jun

7923.4° / 10.1°

Jul

8026.1° / 12.2°

Aug

8125° / 11.4°

Sep

7321.3° / 8°

Oct

4715.7° / 5.4°

Nov

209.7° / 2.4°

Dec

56.2° / 0°

Monthly climate evidence for Dalheim — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.5°C	-0.8°C	61 mm	11.3	8 h 35	5	Good coverage
February	6.7°C	-1.4°C	53 mm	10.1	10 h 02	5	Good coverage
March	11.6°C	0.2°C	48 mm	9.3	11 h 43	25	Good coverage
April	16.7°C	2.2°C	38 mm	7.3	13 h 39	49	Good coverage
May	20°C	6.4°C	67 mm	9.8	15 h 19	61	Good coverage
June	23.4°C	10.1°C	69 mm	9.6	16 h 16	79	Good coverage
July	26.1°C	12.2°C	55 mm	8.3	15 h 53	80	Good coverage
August	25°C	11.4°C	61 mm	9.4	14 h 26	81	Good coverage
September	21.3°C	8°C	50 mm	6.9	12 h 32	73	Good coverage
October	15.7°C	5.4°C	58 mm	9.1	10 h 40	47	Good coverage
November	9.7°C	2.4°C	60 mm	10.8	9 h 00	20	Good coverage
December	6.2°C	0°C	77 mm	12.4	8 h 10	5	Good coverage

What has changed

Dalheim 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

+1.6

Feb

+1.7

Mar

+2.6

Apr

+2.7

May

+1.7

Jun

+3.0

Jul

+2.2

Aug

+2.4

Sep

+2.0

Oct

+1.4

Nov

+1.8

Dec

+2.2

August daytime highs, 2011–2025. Last recorded: 26.7°C.

Records at PERL-NENNIG, 1965–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.3°C15 Jan 1975	-20.8°C13 Jan 1968	29 mm23 Jan 1990	150 mm2018 · driest 14 mm in 1992	50
February	21.4°C27 Feb 2019	-17.9°C7 Feb 2012	32 mm6 Feb 2022	134 mm2020 · driest 6 mm in 2023	50
March	25.3°C31 Mar 2021	-15.9°C1 Mar 2005	25 mm19 Mar 1975	113 mm1988 · driest 4 mm in 1973	50
April	28.5°C21 Apr 1968	-7.1°C17 Apr 2012	28 mm26 Apr 1983	140 mm1989 · driest 4 mm in 2017	50
May	32.9°C28 May 2017	-3.6°C3 May 2021	71 mm10 May 1970	198 mm2024 · driest 12 mm in 1991	50
June	40.8°C27 Jun 2026	-1.1°C5 Jun 1991	46 mm27 Jun 1988	160 mm1990 · driest 9 mm in 1976	50
July	39.9°C25 Jul 2019	3.0°C1 Jul 1984	66 mm14 Jul 2021	169 mm2021 · driest 6 mm in 2022	49
August	37.4°C4 Aug 2022	2.9°C26 Aug 2018	41 mm13 Aug 1965	160 mm2006 · driest 3 mm in 1976	49
September	34.0°C15 Sep 2020	-0.5°C20 Sep 2012	46 mm8 Sep 2025	190 mm2025 · driest 12 mm in 2014	50
October	27.1°C2 Oct 2011	-8.3°C29 Oct 2012	46 mm28 Oct 1990	143 mm1987 · driest 1 mm in 1969	49
November	21.6°C2 Nov 2020	-11.0°C22 Nov 1988	33 mm17 Nov 1972	125 mm2023 · driest 5 mm in 2011	49
December	17.4°C31 Dec 2022	-17.7°C25 Dec 2010	37 mm4 Dec 2011	153 mm1965 · driest 5 mm in 1971	49

Typical days per month at PERL-NENNIG, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	18	2
February	0	0	17	1
March	0	0	16	<1
April	2	0	9	<1
May	5	<1	2	2
June	11	2	<1	2
July	18	7	0	2
August	14	4	0	2
September	6	<1	<1	2
October	<1	0	3	2
November	0	0	9	1
December	0	0	15	2

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 90); on 2011–2025 it is June (86). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in PERL-NENNIG’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%	39%	5%	51%	2.4–7.8°C
February	<1%	34%	5%	43%	3.6–9.9°C
March	3%	33%	4%	43%	8.1–14.1°C
April	16%	28%	4%	35%	12.4–18.5°C
May	34%	34%	6%	42%	16.6–22.2°C
June	51%	32%	7%	40%	19.9–26.3°C
July	65%	29%	7%	37%	21.6–27.8°C
August	65%	29%	5%	34%	21.7–27.0°C
September	44%	27%	6%	35%	18.2–23.1°C
October	11%	31%	6%	40%	13.5–17.5°C
November	<1%	37%	6%	46%	7.2–11.0°C
December	0%	37%	7%	53%	3.3–8.1°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.

1965Each stripe is one year’s mean temperature against the 48-year average. Warmest: 2023. Coolest: 2010.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2960665
NOAA station: GME00127246 · PERL-NENNIG
Station distance: 8.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 18 usable years
Daylight: Calculated from latitude 49.54°, 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 PERL-NENNIG is what differs

Saarburg→Remich→Nittel→Canach→Aspelt→Serrig→

Or put two places side by side: Dalheim vs Saarburg

Best time to visitDalheim.