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France · 1991–2020

Best time to visit
Dunkirk.

July leads for comfortable weather in Dunkirk: typically 23.7°C by day, 14.2°C at night, with 68 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high23.7°C

Typical low14.2°C

Rain in July68 mm

Comfort

July

July · August · June

87climate match

Beach

July

July · August · June

52climate match

Outdoors

September

September · May · June

85climate match

The weakest month is January, scoring 8 against July’s 87 — days reach only 6.6°C, 17° 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

86.6° / 1.6°

Feb

137.6° / 1.8°

Mar

2911.2° / 3.8°

Apr

4715° / 5.9°

May

6218.4° / 9.3°

Jun

7621.3° / 12.1°

Jul

8723.7° / 14.2°

Aug

8623.7° / 14°

Sep

7220.2° / 11.4°

Oct

4915.4° / 8.4°

Nov

2210.3° / 4.8°

Dec

87.1° / 2.2°

Monthly climate evidence for Dunkirk — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 10 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	6.6°C	1.6°C	58 mm	11.2	8.0°C	8 h 22	8	Strong coverage
February	7.6°C	1.8°C	51 mm	10.6	7.1°C	9 h 55	13	Strong coverage
March	11.2°C	3.8°C	52 mm	10.1	7.4°C	11 h 42	29	Strong coverage
April	15°C	5.9°C	45 mm	9.2	9.1°C	13 h 45	47	Strong coverage
May	18.4°C	9.3°C	62 mm	9.5	11.7°C	15 h 31	62	Strong coverage
June	21.3°C	12.1°C	64 mm	9.8	14.5°C	16 h 31	76	Strong coverage
July	23.7°C	14.2°C	68 mm	9.9	16.9°C	16 h 07	87	Strong coverage
August	23.7°C	14°C	71 mm	9.9	18.3°C	14 h 34	86	Strong coverage
September	20.2°C	11.4°C	57 mm	9.7	17.5°C	12 h 34	72	Strong coverage
October	15.4°C	8.4°C	64 mm	10.8	15.4°C	10 h 35	49	Strong coverage
November	10.3°C	4.8°C	75 mm	13.3	12.6°C	8 h 50	22	Strong coverage
December	7.1°C	2.2°C	73 mm	12.2	10.0°C	7 h 56	8	Strong coverage

What has changed

Dunkirk 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

+1.8

Feb

+2.1

Mar

+2.7

Apr

+2.9

May

+2.0

Jun

+2.7

Jul

+2.4

Aug

+2.1

Sep

+1.8

Oct

+1.5

Nov

+1.9

Dec

+2.4

July daytime highs, 2011–2025. Last recorded: 25.7°C.

Records at LILLE-LESQUIN, 1944–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.2°C18 Jan 2007	-19.5°C14 Jan 1982	25 mm23 Jan 1990	122 mm1952 · driest 3 mm in 1997	82
February	19.0°C24 Feb 2021	-17.8°C21 Feb 1956	22 mm12 Feb 1996	101 mm2024 · driest 2 mm in 1959	82
March	24.8°C31 Mar 2021	-10.5°C13 Mar 2013	39 mm5 Mar 2012	113 mm2001 · driest 2 mm in 1993	82
April	27.9°C15 Apr 2007	-4.7°C9 Apr 1968	29 mm3 Apr 1953	113 mm2012 · driest 0 mm in 2007	82
May	31.7°C27 May 2005	-2.3°C3 May 1967	45 mm30 May 2016	166 mm2006 · driest 4 mm in 2020	82
June	34.8°C28 Jun 1947	0.0°C2 Jun 1962	49 mm22 Jun 1951	162 mm2016 · driest 4 mm in 1976	82
July	41.5°C25 Jul 2019	3.4°C5 Jul 1964	59 mm3 Jul 2005	180 mm1968 · driest 5 mm in 2022	81
August	37.1°C8 Aug 2020	3.9°C31 Aug 1956	63 mm19 Aug 2005	138 mm2006 · driest 7 mm in 1991	81
September	35.1°C15 Sep 2020	1.2°C22 Sep 1948	51 mm15 Sep 1970	161 mm2001 · driest 3 mm in 1959	81
October	27.8°C1 Oct 2011	-4.4°C28 Oct 1950	56 mm10 Oct 2013	166 mm1974 · driest 4 mm in 1969	81
November	20.3°C6 Nov 2018	-7.8°C15 Nov 1983	33 mm9 Nov 1966	139 mm1977 · driest 17 mm in 2011	81
December	16.1°C31 Dec 2022	-17.3°C29 Dec 1964	35 mm26 Dec 1999	163 mm1999 · driest 10 mm in 1963	82

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

The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 86); on 2011–2025 it is July (95). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in LILLE-LESQUIN’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%	37%	4%	47%	2.7–8.6°C
February	0%	35%	3%	45%	4.1–10.2°C
March	1%	33%	3%	44%	7.9–13.5°C
April	9%	31%	3%	39%	11.8–16.7°C
May	24%	32%	5%	40%	15.2–20.4°C
June	41%	32%	7%	40%	18.7–23.4°C
July	57%	29%	6%	35%	20.3–25.8°C
August	58%	31%	6%	41%	20.8–25.6°C
September	36%	31%	5%	41%	17.6–22.4°C
October	8%	33%	6%	43%	13.6–17.5°C
November	<1%	40%	6%	54%	7.7–11.8°C
December	0%	38%	5%	52%	3.8–8.7°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.

1945Each stripe is one year’s mean temperature against the 81-year average. Warmest: 2023. Coolest: 1963.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3020686
NOAA station: FRE00104040 · LILLE-LESQUIN
Station distance: 72.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 51.03°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 10 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 LILLE-LESQUIN is what differs

Lille→Roubaix→Tourcoing→Kortrijk→Tournai→Villeneuve-d'Ascq→

Or put two places side by side: Dunkirk vs Lille

Best time to visitDunkirk.

July

July

September

The whole year,without the guesswork.

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

Nearby, measured,and named.

Best time to visit
Dunkirk.

The whole year,
without the guesswork.

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

Nearby, measured,
and named.