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Germany · 1991–2020

Best time to visit
Helgoland.

July leads for comfortable weather in Helgoland: typically 19.3°C by day, 15.3°C at night, with 68 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high19.3°C

Typical low15.3°C

Rain in July68 mm

Comfort

July

July · August · June

73climate match

Beach

July

July · August · June

42climate match

Outdoors

June

June · July · May

74climate match

The weakest month is January, scoring 5 against July’s 73 — days reach only 5.1°C, 19° 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

55.1° / 2.2°

Feb

54.6° / 1.9°

Mar

136.2° / 3.1°

Apr

329.8° / 5.8°

May

5013.5° / 9.3°

Jun

6316.7° / 12.6°

Jul

7319.3° / 15.3°

Aug

7020° / 16.1°

Sep

6217.4° / 14°

Oct

4113.5° / 10.5°

Nov

229.5° / 6.6°

Dec

76.7° / 3.7°

Monthly climate evidence for Helgoland — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 6 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	5.1°C	2.2°C	63 mm	12.8	5.0°C	7 h 53	5	Strong coverage
February	4.6°C	1.9°C	45 mm	9.8	4.1°C	9 h 39	5	Strong coverage
March	6.2°C	3.1°C	42 mm	9.3	4.7°C	11 h 39	13	Strong coverage
April	9.8°C	5.8°C	36 mm	7.7	7.1°C	13 h 57	32	Strong coverage
May	13.5°C	9.3°C	40 mm	7.8	10.5°C	15 h 58	50	Strong coverage
June	16.7°C	12.6°C	56 mm	9.2	14.1°C	17 h 09	63	Strong coverage
July	19.3°C	15.3°C	68 mm	10.3	17.0°C	16 h 40	73	Strong coverage
August	20°C	16.1°C	89 mm	11.3	18.2°C	14 h 52	70	Strong coverage
September	17.4°C	14°C	88 mm	11.1	16.7°C	12 h 37	62	Strong coverage
October	13.5°C	10.5°C	85 mm	13	13.9°C	10 h 25	41	Strong coverage
November	9.5°C	6.6°C	76 mm	13.5	10.4°C	8 h 25	22	Strong coverage
December	6.7°C	3.7°C	74 mm	14	7.1°C	7 h 22	7	Strong coverage

What has changed

Helgoland runs +1.7°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

+1.8

Feb

+1.9

Mar

+2.1

Apr

+2.2

May

+1.6

Jun

+1.6

Jul

+1.7

Aug

+1.8

Sep

+1.7

Oct

+1.2

Nov

+1.3

Dec

+2.0

July daytime highs, 2011–2025. Last recorded: 20.2°C.

Records at HELGOLAND, 1952–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	11.6°C1 Jan 2023	-10.7°C11 Jan 1987	32 mm31 Jan 1957	132 mm1995 · driest 3 mm in 1996	74
February	11.1°C24 Feb 1990	-11.2°C15 Feb 1956	22 mm18 Feb 2024	147 mm2020 · driest 1 mm in 1986	74
March	14.9°C31 Mar 2021	-7.0°C1 Mar 1963	25 mm27 Mar 1967	107 mm2019 · driest 5 mm in 2025	74
April	19.6°C28 Apr 1993	-2.1°C14 Apr 1966	34 mm29 Apr 2018	105 mm2018 · driest 4 mm in 2007	74
May	23.9°C16 May 2000	1.6°C2 May 1979	35 mm21 May 1953	103 mm1983 · driest 6 mm in 1959	75
June	30.4°C27 Jun 2026	5.0°C3 Jun 1975	55 mm24 Jun 1969	146 mm2013 · driest 3 mm in 1992	75
July	28.7°C25 Jul 1994	7.2°C3 Jul 1962	60 mm30 Jul 1966	139 mm1954 · driest 2 mm in 2018	73
August	28.1°C10 Aug 1975	9.0°C25 Aug 1956	99 mm17 Aug 2022	251 mm2006 · driest 8 mm in 1983	74
September	24.4°C13 Sep 2016	5.7°C30 Sep 1954	44 mm14 Sep 1994	240 mm2001 · driest 2 mm in 1959	74
October	19.5°C13 Oct 2023	1.5°C24 Oct 2003	57 mm2 Oct 2008	182 mm2008 · driest 19 mm in 1972	74
November	16.8°C2 Nov 2020	-4.0°C22 Nov 1993	46 mm3 Nov 1968	218 mm1969 · driest 8 mm in 2011	74
December	12.9°C5 Dec 2006	-8.0°C31 Dec 1978	36 mm14 Dec 1989	165 mm1965 · driest 18 mm in 1963	74

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

The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 77); on 2011–2025 it is July (79). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in HELGOLAND’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%	40%	4%	53%	1.3–6.8°C
February	0%	32%	2%	40%	1.2–6.7°C
March	0%	30%	2%	38%	2.7–7.8°C
April	0%	27%	2%	32%	7.0–10.7°C
May	<1%	27%	3%	31%	11.2–14.4°C
June	9%	30%	5%	39%	14.7–18.1°C
July	19%	34%	6%	47%	16.7–20.3°C
August	26%	36%	8%	48%	17.5–21.1°C
September	7%	38%	9%	53%	15.6–18.4°C
October	0%	42%	8%	56%	12.0–14.8°C
November	0%	47%	7%	62%	7.8–10.7°C
December	0%	44%	5%	60%	3.8–8.1°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.

1953Each stripe is one year’s mean temperature against the 72-year average. Warmest: 2024. Coolest: 1963.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3208547
NOAA station: GME00102177 · HELGOLAND
Station distance: 0.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 54.18°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 6 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.

Validated places to explore

Tokyo→Bangkok→Reykjavik→Lisbon→

Best time to visitHelgoland.

July

July

June

The whole year,without the guesswork.

Helgoland runs +1.7°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Helgoland.

The whole year,
without the guesswork.

Helgoland runs +1.7°C
on the 1961–1990 baseline.

Nearby, measured,
and named.