France · 1991–2020

Best time to visit
Plouguenast.

July leads for comfortable weather in Plouguenast: typically 24.8°C by day, 13.7°C at night, with 44 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high24.8°C

Typical low13.7°C

Rain in July44 mm

Comfort

July

July · August · June

90climate match

Beach

July

July · August · June

61climate match

Outdoors

May

May · September · June

86climate match

The weakest month is January, scoring 18 against July’s 90 — days reach only 9.2°C, 15° 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

189.2° / 3.2°

Feb

2410.2° / 2.9°

Mar

3813.2° / 4.5°

Apr

4916° / 6°

May

6619.4° / 9.2°

Jun

8422.6° / 12.1°

Jul

9024.8° / 13.7°

Aug

9024.8° / 13.8°

Sep

7921.9° / 11.4°

Oct

5517.2° / 9.3°

Nov

3212.5° / 5.9°

Dec

189.6° / 3.6°

Monthly climate evidence for Plouguenast — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 39 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	9.2°C	3.2°C	67 mm	11.5	9.8°C	8 h 44	18	Strong coverage
February	10.2°C	2.9°C	52 mm	10.1	8.9°C	10 h 07	24	Strong coverage
March	13.2°C	4.5°C	49 mm	8.9	8.9°C	11 h 44	38	Strong coverage
April	16°C	6°C	51 mm	9.9	10.0°C	13 h 35	49	Strong coverage
May	19.4°C	9.2°C	58 mm	8.9	11.8°C	15 h 10	66	Strong coverage
June	22.6°C	12.1°C	51 mm	7.4	14.1°C	16 h 04	84	Strong coverage
July	24.8°C	13.7°C	44 mm	7.1	16.3°C	15 h 42	90	Strong coverage
August	24.8°C	13.8°C	43 mm	7.1	17.8°C	14 h 19	90	Strong coverage
September	21.9°C	11.4°C	57 mm	7.8	17.6°C	12 h 31	79	Strong coverage
October	17.2°C	9.3°C	73 mm	11	16.1°C	10 h 44	55	Strong coverage
November	12.5°C	5.9°C	73 mm	12.5	13.8°C	9 h 09	32	Strong coverage
December	9.6°C	3.6°C	73 mm	12.3	11.5°C	8 h 21	18	Strong coverage

What has changed

Plouguenast runs +1.8°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

+1.4

Feb

+1.6

Mar

+1.9

Apr

+2.6

May

+1.9

Jun

+2.0

Jul

+1.7

Aug

+1.8

Sep

+1.3

Oct

+1.3

Nov

+1.7

Dec

+1.8

July daytime highs, 2011–2025. Last recorded: 26.2°C.

Records at RENNES-ST JACQUES, 1945–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.8°C27 Jan 2003	-14.7°C17 Jan 1985	70 mm19 Jan 1995	203 mm2025 · driest 8 mm in 1992	82
February	20.9°C27 Feb 2019	-11.2°C22 Feb 1948	35 mm4 Feb 1951	140 mm2014 · driest 2 mm in 1993	82
March	24.1°C30 Mar 2021	-7.3°C1 Mar 2005	36 mm24 Mar 2001	152 mm2001 · driest 3 mm in 1953	82
April	28.7°C17 Apr 1945	-3.2°C3 Apr 1984	28 mm30 Apr 1991	151 mm1998 · driest 2 mm in 1980	82
May	33.5°C27 May 2026	-1.2°C1 May 1945	35 mm30 May 1981	187 mm1981 · driest 14 mm in 1976	82
June	40.6°C22 Jun 2026	2.2°C2 Jun 1962	56 mm10 Jun 1993	145 mm1993 · driest 0 mm in 1976	82
July	40.5°C18 Jul 2022	5.5°C8 Jul 1954	39 mm26 Jul 2003	124 mm2000 · driest 1 mm in 2022	81
August	39.5°C5 Aug 2003	4.0°C30 Aug 1956	50 mm16 Aug 1997	179 mm1951 · driest 2 mm in 1993	81
September	35.1°C9 Sep 2023	1.9°C30 Sep 1972	45 mm26 Sep 1952	158 mm1993 · driest 3 mm in 2014	81
October	30.0°C2 Oct 2011	-4.6°C29 Oct 1947	66 mm6 Oct 2018	194 mm1966 · driest 3 mm in 1969	81
November	21.4°C7 Nov 2015	-7.5°C28 Nov 1955	34 mm13 Nov 2010	151 mm1963 · driest 14 mm in 1981	81
December	18.0°C31 Dec 2022	-12.6°C29 Dec 1964	39 mm23 Dec 2013	160 mm1999 · driest 13 mm in 1975	81

Typical days per month at RENNES-ST JACQUES, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	8	2
February	0	0	7	1
March	0	0	4	1
April	<1	0	1	1
May	3	<1	0	2
June	8	2	0	1
July	14	3	0	1
August	12	3	0	1
September	6	<1	0	2
October	<1	0	<1	2
November	0	0	3	2
December	0	0	8	2

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 95); on 2011–2025 it is August (93). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in RENNES-ST JACQUES’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%	38%	5%	50%	5.8–10.7°C
February	<1%	36%	4%	47%	7.6–12.3°C
March	3%	31%	3%	40%	10.1–15.1°C
April	12%	30%	3%	39%	13.3–17.5°C
May	28%	31%	5%	39%	16.3–21.1°C
June	54%	25%	4%	29%	19.6–24.6°C
July	72%	22%	4%	23%	21.9–27.0°C
August	71%	24%	4%	27%	21.5–26.8°C
September	51%	28%	5%	35%	19.3–23.9°C
October	15%	32%	7%	44%	15.2–19.0°C
November	<1%	40%	6%	54%	10.5–13.8°C
December	0%	40%	5%	54%	6.9–11.2°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 2986665
NOAA station: FR000007130 · RENNES-ST JACQUES
Station distance: 75.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 48.28°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 39 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 RENNES-ST JACQUES is what differs

Rennes→Laval→Fougères→Vitré→Cesson-Sévigné→Bruz→

Or put two places side by side: Plouguenast vs Rennes

Best time to visitPlouguenast.

July

July

May

The whole year,without the guesswork.

Plouguenast runs +1.8°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Plouguenast.

The whole year,
without the guesswork.

Plouguenast runs +1.8°C
on the 1961–1990 baseline.

Nearby, measured,
and named.