France · 1991–2020

Best time to visit
Rouen.

July leads for comfortable weather in Rouen: typically 23.7°C by day, 12.6°C at night, with 62 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high23.7°C

Typical low12.6°C

Rain in July62 mm

Comfort

July

July · August · June

86climate match

Beach

July

July · August · June

50climate match

Outdoors

September

September · June · May

88climate match

The weakest month is January, scoring 5 against July’s 86 — days reach only 7°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

57° / 1.1°

Feb

138.3° / 1.1°

Mar

2711.7° / 3°

Apr

4515.2° / 4.6°

May

5818.3° / 8°

Jun

7521.5° / 10.5°

Jul

8623.7° / 12.6°

Aug

8623.6° / 12.6°

Sep

7020.2° / 9.9°

Oct

4415.6° / 7.4°

Nov

2110.6° / 3.9°

Dec

57.5° / 1.5°

Monthly climate evidence for Rouen — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	7°C	1.1°C	73 mm	13.3	8 h 35	5	Strong coverage
February	8.3°C	1.1°C	61 mm	10.6	10 h 02	13	Good coverage
March	11.7°C	3°C	61 mm	10.4	11 h 43	27	Strong coverage
April	15.2°C	4.6°C	49 mm	9.3	13 h 39	45	Strong coverage
May	18.3°C	8°C	64 mm	10.4	15 h 19	58	Strong coverage
June	21.5°C	10.5°C	61 mm	9	16 h 15	75	Good coverage
July	23.7°C	12.6°C	62 mm	8.8	15 h 52	86	Strong coverage
August	23.6°C	12.6°C	59 mm	8.8	14 h 25	86	Strong coverage
September	20.2°C	9.9°C	58 mm	8.8	12 h 32	70	Strong coverage
October	15.6°C	7.4°C	76 mm	12.3	10 h 40	44	Strong coverage
November	10.6°C	3.9°C	81 mm	12.8	9 h 01	21	Strong coverage
December	7.5°C	1.5°C	96 mm	13.3	8 h 11	5	Strong coverage

Records at VALLEE DE SEINE, 1973–2024
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.0°C24 Jan 1978	-17.1°C17 Jan 1985	75 mm1 Jan 1982	172 mm2018 · driest 7 mm in 1989	49
February	20.0°C6 Feb 1978	-13.3°C7 Feb 1991	27 mm20 Feb 2006	148 mm2020 · driest 1 mm in 1982	49
March	24.4°C31 Mar 2021	-8.1°C4 Mar 2005	35 mm20 Mar 1978	171 mm2001 · driest 5 mm in 1993	49
April	27.4°C20 Apr 2018	-5.0°C10 Apr 1977	67 mm20 Apr 1986	120 mm1986 · driest 4 mm in 2022	49
May	30.0°C13 May 1998	-0.5°C2 May 1982	61 mm10 May 1982	143 mm1985 · driest 8 mm in 1990	49
June	36.0°C21 Jun 2017	1.0°C1 Jun 1975	53 mm21 Jun 1992	145 mm2021 · driest 6 mm in 1976	48
July	41.3°C25 Jul 2019	1.0°C2 Jul 1978	50 mm26 Jul 1985	167 mm2007 · driest 8 mm in 1983	49
August	38.4°C9 Aug 2020	5.0°C28 Aug 1974	40 mm27 Aug 2010	140 mm2011 · driest 3 mm in 1976	49
September	34.3°C10 Sep 2023	2.4°C21 Sep 1986	87 mm21 Sep 1983	192 mm1983 · driest 6 mm in 1982	49
October	28.3°C10 Oct 2023	-3.2°C29 Oct 1997	89 mm14 Oct 1982	161 mm1982 · driest 11 mm in 1975	49
November	20.3°C7 Nov 2015	-8.3°C24 Nov 1998	56 mm25 Nov 1978	170 mm2019 · driest 3 mm in 1995	49
December	20.0°C6 Dec 1977	-11.3°C29 Dec 1996	117 mm15 Dec 1982	288 mm1982 · driest 5 mm in 1975	48

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

How often, not how much — every day in VALLEE DE SEINE’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%	44%	6%	59%	4.8–9.2°C
February	<1%	37%	5%	51%	5.0–10.7°C
March	2%	37%	5%	47%	8.5–13.7°C
April	11%	30%	4%	39%	12.4–16.8°C
May	26%	36%	6%	46%	15.2–20.1°C
June	47%	30%	6%	38%	18.6–23.3°C
July	61%	29%	6%	35%	20.8–26.3°C
August	64%	27%	5%	38%	20.7–25.6°C
September	39%	32%	7%	43%	17.2–22.0°C
October	7%	39%	7%	53%	13.7–18.0°C
November	<1%	43%	8%	61%	8.5–12.4°C
December	<1%	44%	9%	60%	5.6–9.4°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.

1973Each stripe is one year’s mean temperature against the 28-year average. Warmest: 2022. Coolest: 1985.2022

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2982652
NOAA station: FRM00007037 · VALLEE DE SEINE
Station distance: 8.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 49.44°, 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 VALLEE DE SEINE is what differs

Sotteville-lès-Rouen→Saint-Étienne-du-Rouvray→Le Grand-Quevilly→Mont-Saint-Aignan→Le Petit-Quevilly→Elbeuf→

Or put two places side by side: Rouen vs Sotteville-lès-Rouen

Best time to visitRouen.

July

July

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Rouen.

The whole year,
without the guesswork.

Nearby, measured,
and named.