Luxembourg · 1991–2020

Best time to visit
Grevenmacher.

August leads for comfortable weather in Grevenmacher: typically 25.5°C by day, 13.3°C at night, with 53 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high25.5°C

Typical low13.3°C

Rain in August53 mm

Comfort

August

August · July · June

85climate match

Beach

August

August · July · June

59climate match

Outdoors

September

September · May · April

87climate match

The weakest month is January, scoring 5 against August’s 85 — 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° / 0.1°

Feb

86.8° / -0.2°

Mar

3011.8° / 2°

Apr

5116.5° / 4.6°

May

6620.2° / 8.4°

Jun

8123.3° / 11.9°

Jul

8225.8° / 13.9°

Aug

8525.5° / 13.3°

Sep

7120.6° / 9.8°

Oct

4515° / 6.7°

Nov

209.4° / 3.5°

Dec

56.1° / 1.1°

Monthly climate evidence for Grevenmacher — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.5°C	0.1°C	66 mm	11.7	8 h 34	5	Good coverage
February	6.8°C	-0.2°C	47 mm	9.2	10 h 01	8	Good coverage
March	11.8°C	2°C	44 mm	8.6	11 h 43	30	Good coverage
April	16.5°C	4.6°C	41 mm	7.8	13 h 40	51	Good coverage
May	20.2°C	8.4°C	64 mm	9.8	15 h 20	66	Good coverage
June	23.3°C	11.9°C	70 mm	9.7	16 h 17	81	Good coverage
July	25.8°C	13.9°C	69 mm	9.1	15 h 54	82	Good coverage
August	25.5°C	13.3°C	53 mm	8.2	14 h 26	85	Good coverage
September	20.6°C	9.8°C	60 mm	8.6	12 h 32	71	Good coverage
October	15°C	6.7°C	63 mm	9.7	10 h 40	45	Good coverage
November	9.4°C	3.5°C	62 mm	10.8	8 h 59	20	Good coverage
December	6.1°C	1.1°C	82 mm	13.2	8 h 09	5	Good coverage

What has changed

Grevenmacher runs +2.2°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

+2.1

Feb

+2.0

Mar

+2.7

Apr

+2.6

May

+1.9

Jun

+2.9

Jul

+2.2

Aug

+2.6

Sep

+1.8

Oct

+1.5

Nov

+1.8

Dec

+2.5

August daytime highs, 2011–2025. Last recorded: 27.0°C.

Records at TRIER-ZEWEN, 1907–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.3°C15 Jan 1975	-18.3°C1 Jan 1979	50 mm22 Jan 1995	205 mm1995 · driest 12 mm in 1989	97
February	21.4°C27 Feb 2019	-19.3°C12 Feb 1929	32 mm8 Feb 1970	144 mm2020 · driest 0 mm in 1959	97
March	25.8°C31 Mar 2021	-13.0°C6 Mar 1971	31 mm30 Mar 1962	126 mm1981 · driest 1 mm in 1929	97
April	29.7°C18 Apr 1949	-6.0°C14 Apr 1913	40 mm26 Apr 1981	135 mm1998 · driest 0 mm in 2026	97
May	34.5°C25 May 1922	-2.5°C1 May 1910	49 mm31 May 2018	159 mm2024 · driest 10 mm in 1991	97
June	41.1°C27 Jun 2026	1.4°C5 Jun 1991	57 mm12 Jun 1931	175 mm1997 · driest 5 mm in 1976	99
July	39.9°C25 Jul 2019	4.1°C2 Jul 1960	71 mm25 Jul 1929	176 mm1930 · driest 1 mm in 2022	97
August	38.2°C9 Aug 2020	3.2°C21 Aug 1920	64 mm21 Aug 1975	219 mm1931 · driest 7 mm in 1983	98
September	35.2°C3 Sep 1911	-1.7°C24 Sep 1931	56 mm15 Sep 2021	136 mm1968 · driest 3 mm in 1959	98
October	28.6°C9 Oct 1921	-6.0°C7 Oct 1912	49 mm8 Oct 1930	197 mm1998 · driest 2 mm in 1969	98
November	22.3°C2 Nov 2020	-13.1°C28 Nov 1915	41 mm18 Nov 1971	146 mm1910 · driest 3 mm in 2011	98
December	18.4°C4 Dec 1953	-17.2°C17 Dec 1927	33 mm20 Dec 1993	218 mm1993 · driest 3 mm in 1963	98

Typical days per month at TRIER-ZEWEN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	15	2
February	0	0	15	1
March	0	0	11	<1
April	2	0	3	1
May	6	<1	<1	2
June	11	2	0	3
July	17	6	0	2
August	17	5	0	2
September	5	<1	0	2
October	<1	0	2	2
November	0	0	5	2
December	0	0	12	3

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 92); on 2011–2025 it is June (89). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in TRIER-ZEWEN’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%	1.4–7.6°C
February	0%	35%	4%	44%	3.3–9.8°C
March	3%	31%	3%	41%	7.7–14.2°C
April	16%	32%	4%	40%	12.5–18.1°C
May	37%	32%	6%	41%	17.2–22.2°C
June	52%	32%	7%	40%	20.3–26.0°C
July	61%	32%	8%	41%	21.7–27.9°C
August	60%	32%	7%	40%	21.6–27.2°C
September	41%	31%	5%	40%	18.0–23.4°C
October	10%	32%	6%	42%	12.7–16.9°C
November	0%	38%	6%	52%	6.5–10.8°C
December	0%	39%	6%	53%	2.5–8.0°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.

1908Each stripe is one year’s mean temperature against the 95-year average. Warmest: 2023. Coolest: 1909.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2960515
NOAA station: GME00129430 · TRIER-ZEWEN
Station distance: 13.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 49.68°, 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 TRIER-ZEWEN is what differs

Konz→Wasserbillig→Trierweiler→Tawern→Wasserliesch→Igel→

Or put two places side by side: Grevenmacher vs Konz

Best time to visitGrevenmacher.

August

August

September

The whole year,without the guesswork.

Grevenmacher runs +2.2°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Grevenmacher.

The whole year,
without the guesswork.

Grevenmacher runs +2.2°C
on the 1961–1990 baseline.

Nearby, measured,
and named.