United Kingdom · 1991–2020

Best time to visit
Isles of Scilly.

July leads for comfortable weather in Isles of Scilly: typically 18.7°C by day, 13.2°C at night, with 72 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high18.7°C

Typical low13.2°C

Rain in July72 mm

Comfort

July

July · August · June

67climate match

Beach

July

July · August · June

33climate match

Outdoors

June

June · July · August

76climate match

The weakest month is January, scoring 8 against July’s 67 — 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

89.2° / 4.7°

Feb

139.2° / 4.5°

Mar

2410.3° / 5.4°

Apr

3112.1° / 6.6°

May

4814.6° / 8.8°

Jun

6116.9° / 11.3°

Jul

6718.7° / 13.2°

Aug

6619° / 13.4°

Sep

5817.4° / 12°

Oct

3814.6° / 9.9°

Nov

1911.7° / 7.3°

Dec

1110° / 5.5°

Monthly climate evidence for Isles of Scilly — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 8 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	9.2°C	4.7°C	120 mm	17	10.6°C	8 h 32	8	Strong coverage
February	9.2°C	4.5°C	97 mm	14.5	10.1°C	10 h	13	Strong coverage
March	10.3°C	5.4°C	72 mm	12.7	9.9°C	11 h 43	24	Strong coverage
April	12.1°C	6.6°C	77 mm	12.3	10.4°C	13 h 41	31	Strong coverage
May	14.6°C	8.8°C	60 mm	10.1	11.9°C	15 h 22	48	Strong coverage
June	16.9°C	11.3°C	59 mm	9.6	14.4°C	16 h 19	61	Strong coverage
July	18.7°C	13.2°C	72 mm	10.7	16.4°C	15 h 57	67	Strong coverage
August	19°C	13.4°C	79 mm	12.1	17.0°C	14 h 28	66	Strong coverage
September	17.4°C	12°C	82 mm	12.2	16.0°C	12 h 32	58	Strong coverage
October	14.6°C	9.9°C	113 mm	15.4	14.1°C	10 h 39	38	Strong coverage
November	11.7°C	7.3°C	132 mm	18.1	12.5°C	8 h 58	19	Strong coverage
December	10°C	5.5°C	127 mm	17.4	11.5°C	8 h 06	11	Strong coverage

Records at CAMBORNE, 1978–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.5°C10 Jan 1998	-9.4°C13 Jan 1987	34 mm4 Jan 2025	242 mm2026 · driest 20 mm in 1992	48
February	16.0°C26 Feb 2019	-6.8°C7 Feb 1991	37 mm5 Feb 1996	213 mm2007 · driest 14 mm in 1993	48
March	18.5°C30 Mar 2021	-5.2°C1 Mar 2018	38 mm21 Mar 2013	161 mm1981 · driest 18 mm in 1990	48
April	22.3°C19 Apr 2019	-2.3°C3 Apr 2013	36 mm15 Apr 2025	180 mm1998 · driest 5 mm in 1984	48
May	26.9°C24 May 2026	0.3°C5 May 1979	37 mm22 May 1984	122 mm2007 · driest 5 mm in 1989	48
June	27.7°C19 Jun 2017	4.8°C2 Jun 1989	47 mm5 Jun 1997	142 mm2012 · driest 6 mm in 1984	48
July	30.4°C17 Jul 2022	7.2°C21 Jul 1980	38 mm24 Jul 2003	222 mm2009 · driest 8 mm in 1999	48
August	29.4°C3 Aug 1990	7.4°C20 Aug 1986	68 mm17 Aug 2004	195 mm1997 · driest 5 mm in 1981	47
September	27.1°C5 Sep 2023	4.8°C21 Sep 1986	50 mm14 Sep 2000	182 mm1981 · driest 8 mm in 2014	48
October	23.1°C8 Oct 2023	-0.3°C17 Oct 1993	40 mm5 Oct 2012	238 mm1987 · driest 21 mm in 1978	48
November	17.0°C5 Nov 2003	-3.8°C28 Nov 2010	58 mm23 Nov 2024	242 mm2002 · driest 38 mm in 1988	48
December	15.3°C2 Dec 1985	-4.7°C29 Dec 1996	58 mm27 Dec 1979	278 mm1978 · driest 2 mm in 1995	48

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

How often, not how much — every day in CAMBORNE’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%	56%	14%	72%	7.2–10.4°C
February	0%	51%	12%	66%	7.2–10.8°C
March	0%	45%	8%	58%	8.8–11.3°C
April	1%	39%	7%	49%	10.7–13.5°C
May	4%	33%	6%	42%	12.7–16.4°C
June	11%	33%	6%	43%	15.5–18.4°C
July	22%	34%	6%	46%	17.3–21.0°C
August	20%	37%	7%	49%	17.7–20.5°C
September	8%	41%	8%	55%	16.2–18.4°C
October	<1%	52%	13%	70%	13.3–15.9°C
November	0%	60%	14%	80%	10.7–12.8°C
December	0%	58%	14%	77%	8.7–11.2°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.

1979Each stripe is one year’s mean temperature against the 47-year average. Warmest: 2023. Coolest: 1986.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 8299858
NOAA station: UK000003808 · CAMBORNE
Station distance: 77.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 49.93°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 8 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 CAMBORNE is what differs

Redruth→Falmouth→Truro→Camborne→Penzance→Helston→

Or put two places side by side: Isles of Scilly vs Redruth

Best time to visitIsles of Scilly.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Isles of Scilly.

The whole year,
without the guesswork.

Nearby, measured,
and named.