United Kingdom · 1991–2020

Best time to visit
Rhu.

July leads for comfortable weather in Rhu: typically 18.8°C by day, 10.9°C at night, with 152 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high18.8°C

Typical low10.9°C

Rain in July152 mm

Comfort

July

July · June · August

47climate match

Beach

July

July · January · February

7climate match

Outdoors

June

June · July · August

60climate match

The weakest month is January, scoring 5 against July’s 47 — days reach only 7.3°C, 17° below the 24°C the score treats as ideal, and 321 mm of rain falls.

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

57.3° / 1.6°

Feb

57.8° / 1.6°

Mar

59.4° / 2.6°

Apr

1512.3° / 3.9°

May

3215.3° / 6.2°

Jun

4417.6° / 9.2°

Jul

4718.8° / 10.9°

Aug

4018.5° / 10.7°

Sep

2816.2° / 9°

Oct

512.7° / 6.2°

Nov

59.6° / 3.5°

Dec

57.4° / 1.4°

Monthly climate evidence for Rhu — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 27 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	7.3°C	1.6°C	321 mm	20.9	7.9°C	7 h 33	5	Strong coverage
February	7.8°C	1.6°C	245 mm	18.6	7.2°C	9 h 28	5	Strong coverage
March	9.4°C	2.6°C	224 mm	18.8	7.2°C	11 h 37	5	Strong coverage
April	12.3°C	3.9°C	144 mm	15.1	8.2°C	14 h 05	15	Strong coverage
May	15.3°C	6.2°C	132 mm	14.3	10.1°C	16 h 16	32	Strong coverage
June	17.6°C	9.2°C	132 mm	15.3	12.7°C	17 h 35	44	Strong coverage
July	18.8°C	10.9°C	152 mm	16.5	14.6°C	17 h 03	47	Strong coverage
August	18.5°C	10.7°C	186 mm	17.8	15.0°C	15 h 05	40	Strong coverage
September	16.2°C	9°C	198 mm	17.1	13.8°C	12 h 39	28	Strong coverage
October	12.7°C	6.2°C	269 mm	20	12.3°C	10 h 17	5	Strong coverage
November	9.6°C	3.5°C	281 mm	21.1	10.8°C	8 h 08	5	Strong coverage
December	7.4°C	1.4°C	311 mm	20	9.4°C	6 h 59	5	Strong coverage

What has changed

Rhu runs +1.2°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

+1.0

Feb

+1.7

Mar

+1.4

Apr

+1.4

May

+1.3

Jun

+0.9

Jul

+1.2

Aug

+0.6

Sep

+1.3

Oct

+0.7

Nov

+1.4

Dec

+1.0

July daytime highs, 2011–2025. Last recorded: 19.5°C.

Records at BENMORE: YOUNGER BOTANIC GARDE, 1960–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	14.4°C3 Jan 2007	-13.9°C11 Jan 1982	73 mm17 Jan 1974	505 mm1993 · driest 15 mm in 1963	67
February	14.5°C13 Feb 1998	-11.1°C4 Feb 1963	67 mm11 Feb 1998	469 mm2020 · driest 5 mm in 1986	67
March	19.9°C25 Mar 2012	-11.1°C2 Mar 1965	85 mm5 Mar 2002	409 mm1994 · driest 23 mm in 1969	67
April	23.6°C30 Apr 1990	-4.4°C2 Apr 1968	70 mm23 Apr 1997	276 mm2024 · driest 11 mm in 1974	65
May	27.0°C12 May 2001	-3.0°C5 May 2012	53 mm25 May 1972	358 mm2011 · driest 16 mm in 1984	66
June	30.9°C27 Jun 2018	-0.6°C4 Jun 1975	59 mm19 Jun 1999	251 mm2002 · driest 36 mm in 1988	66
July	29.6°C11 Jul 1983	2.2°C30 Jul 1965	64 mm6 Jul 2023	296 mm2015 · driest 25 mm in 2021	65
August	29.0°C3 Aug 1975	2.6°C22 Aug 1999	88 mm8 Aug 2004	416 mm1985 · driest 28 mm in 1976	65
September	26.5°C7 Sep 2023	-0.9°C28 Sep 1975	71 mm9 Sep 1978	381 mm1980 · driest 29 mm in 2014	65
October	21.7°C2 Oct 1973	-4.1°C17 Oct 1993	112 mm6 Oct 2023	460 mm2000 · driest 71 mm in 1993	65
November	16.5°C2 Nov 1979	-6.8°C29 Nov 1985	125 mm18 Nov 2012	510 mm2006 · driest 81 mm in 1989	64
December	14.2°C12 Dec 1998	-11.5°C27 Dec 1995	90 mm15 Dec 2018	571 mm1999 · driest 56 mm in 1995	65

Typical days per month at BENMORE: YOUNGER BOTANIC GARDE, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	10	12
February	0	9	9
March	0	7	9
April	0	4	5
May	<1	2	5
June	<1	0	5
July	2	0	6
August	<1	0	6
September	0	<1	8
October	0	2	10
November	0	5	11
December	0	10	11

How often, not how much — every day in BENMORE: YOUNGER BOTANIC GARDE’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%	66%	35%	82%	4.7–8.5°C
February	0%	61%	30%	74%	5.1–8.7°C
March	0%	59%	27%	74%	7.3–10.5°C
April	2%	48%	14%	64%	9.9–13.5°C
May	9%	47%	14%	62%	13.4–17.1°C
June	17%	49%	15%	68%	16.0–19.0°C
July	20%	51%	16%	71%	16.5–20.1°C
August	16%	55%	20%	73%	16.6–19.9°C
September	4%	60%	27%	80%	14.5–17.1°C
October	<1%	64%	32%	81%	11.1–13.8°C
November	0%	67%	33%	84%	7.6–10.6°C
December	0%	65%	33%	82%	5.5–9.0°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.

1960Each stripe is one year’s mean temperature against the 56-year average. Warmest: 2014. Coolest: 1979.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2639426
NOAA station: UKE00105930 · BENMORE: YOUNGER BOTANIC GARDE
Station distance: 13.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 56.02°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 27 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 BENMORE: YOUNGER BOTANIC GARDE is what differs

Greenock→Helensburgh→Gourock→Dunoon→Oban→Lochgilphead→

Or put two places side by side: Rhu vs Greenock

Best time to visitRhu.

July

July

June

The whole year,without the guesswork.

Rhu runs +1.2°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Rhu.

The whole year,
without the guesswork.

Rhu runs +1.2°C
on the 1961–1990 baseline.

Nearby, measured,
and named.