United Kingdom · 1991–2020

Best time to visit
Lerwick.

July leads for comfortable weather in Lerwick: typically 14.4°C by day, 10.1°C at night, with 68 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high14.4°C

Typical low10.1°C

Rain in July68 mm

Comfort

July

July · August · June

46climate match

Beach

July

July · August · January

10climate match

Outdoors

July

July · August · June

65climate match

The weakest month is January, scoring 5 against July’s 46 — days reach only 6.2°C, 18° 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

56.2° / 2.1°

Feb

55.9° / 1.7°

Mar

56.8° / 2.4°

Apr

128.4° / 3.8°

May

2710.6° / 5.5°

Jun

3812.6° / 8°

Jul

4614.4° / 10.1°

Aug

4314.7° / 10.5°

Sep

3113° / 9.1°

Oct

1010.4° / 6.6°

Nov

58.2° / 4.2°

Dec

56.7° / 2.4°

Monthly climate evidence for Lerwick — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 3 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	6.2°C	2.1°C	151 mm	23	7.9°C	6 h 37	5	Strong coverage
February	5.9°C	1.7°C	123 mm	19.8	7.4°C	8 h 59	5	Strong coverage
March	6.8°C	2.4°C	109 mm	19.9	7.2°C	11 h 33	5	Strong coverage
April	8.4°C	3.8°C	68 mm	15.6	7.4°C	14 h 27	12	Strong coverage
May	10.6°C	5.5°C	57 mm	12.6	8.4°C	17 h 07	27	Strong coverage
June	12.6°C	8°C	60 mm	12.3	10.2°C	18 h 52	38	Strong coverage
July	14.4°C	10.1°C	68 mm	13.1	12.1°C	18 h 08	46	Strong coverage
August	14.7°C	10.5°C	91 mm	13.9	12.9°C	15 h 39	43	Strong coverage
September	13°C	9.1°C	106 mm	17	12.1°C	12 h 46	31	Strong coverage
October	10.4°C	6.6°C	131 mm	21	11.0°C	9 h 58	10	Strong coverage
November	8.2°C	4.2°C	144 mm	22.5	9.8°C	7 h 21	5	Strong coverage
December	6.7°C	2.4°C	151 mm	23.2	8.8°C	5 h 52	5	Strong coverage

What has changed

Lerwick runs +0.9°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

+0.7

Feb

+1.2

Mar

+1.1

Apr

+0.9

May

+1.0

Jun

+0.7

Jul

+1.0

Aug

+0.7

Sep

+1.1

Oct

+0.6

Nov

+1.2

Dec

+1.0

July daytime highs, 2011–2025. Last recorded: 17.3°C.

Records at LERWICK, 1929–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	12.8°C13 Jan 1947	-8.9°C27 Jan 1952	87 mm10 Jan 1938	302 mm2015 · driest 1 mm in 1940	97
February	11.7°C17 Feb 1945	-7.4°C24 Feb 2010	96 mm7 Feb 1931	252 mm1989 · driest 0 mm in 1935	97
March	13.3°C9 Mar 1961	-8.3°C13 Mar 1947	94 mm4 Mar 1938	207 mm1994 · driest 17 mm in 1931	97
April	16.1°C16 Apr 1942	-5.7°C7 Apr 1968	78 mm2 Apr 1935	148 mm1985 · driest 2 mm in 1974	97
May	20.7°C30 May 1992	-2.2°C16 May 1934	82 mm18 May 1938	161 mm1938 · driest 7 mm in 1951	97
June	23.3°C30 Jun 1958	-0.6°C5 Jun 1931	90 mm16 Jun 1938	153 mm1938 · driest 9 mm in 1933	97
July	23.4°C5 Jul 1991	3.5°C28 Jul 1965	107 mm8 Jul 1937	156 mm1988 · driest 1 mm in 1931	96
August	22.1°C12 Aug 1997	2.8°C22 Aug 1973	87 mm9 Aug 2014	184 mm2014 · driest 1 mm in 1947	96
September	20.7°C7 Sep 2023	-0.6°C30 Sep 1954	57 mm2 Sep 1931	181 mm1979 · driest 33 mm in 1959	96
October	17.2°C9 Oct 1955	-3.3°C27 Oct 1948	89 mm21 Oct 1937	250 mm1987 · driest 29 mm in 1946	97
November	14.0°C10 Nov 2022	-5.7°C17 Nov 1962	90 mm24 Nov 1934	238 mm1973 · driest 1 mm in 1931	97
December	12.8°C9 Dec 2013	-8.2°C29 Dec 1961	91 mm5 Dec 1934	274 mm1999 · driest 1 mm in 1937	97

Typical days per month at LERWICK, 1991–2020
Month	Frost nights	Heavy rain (10 mm+)
January	6	5
February	7	4
March	6	3
April	3	1
May	<1	1
June	0	2
July	0	2
August	0	3
September	0	3
October	<1	4
November	2	4
December	6	5

How often, not how much — every day in LERWICK’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%	77%	13%	92%	4.1–7.2°C
February	0%	69%	11%	85%	3.8–7.0°C
March	0%	65%	9%	82%	4.8–8.0°C
April	0%	56%	5%	72%	7.2–9.2°C
May	<1%	44%	5%	57%	9.4–11.5°C
June	<1%	46%	6%	63%	11.6–13.9°C
July	<1%	47%	6%	63%	13.3–15.5°C
August	<1%	47%	8%	67%	13.3–15.5°C
September	0%	62%	11%	83%	11.8–13.9°C
October	0%	69%	13%	88%	9.2–11.4°C
November	0%	76%	15%	93%	6.7–9.1°C
December	0%	78%	15%	94%	4.9–7.9°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.

1930Each stripe is one year’s mean temperature against the 96-year average. Warmest: 2025. Coolest: 1979.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2644605
NOAA station: UK000003005 · LERWICK
Station distance: 3.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 60.15°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 3 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 LERWICK is what differs

Sandwick→Scalloway→Symbister→Brae→Uyeasound→Wester Quarff→

Or put two places side by side: Lerwick vs Sandwick

Best time to visitLerwick.

July

July

July

The whole year,without the guesswork.

Lerwick runs +0.9°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Lerwick.

The whole year,
without the guesswork.

Lerwick runs +0.9°C
on the 1961–1990 baseline.

Nearby, measured,
and named.