Sweden · 1991–2020

Best time to visit
Hallstavik.

July leads for comfortable weather in Hallstavik: typically 22.5°C by day, 10.8°C at night, with 61 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.5°C

Typical low10.8°C

Rain in July61 mm

Comfort

July

July · August · June

79climate match

Beach

July

July · August · June

42climate match

Outdoors

June

June · August · July

85climate match

The weakest month is January, scoring 5 against July’s 79 — days reach only 0.2°C, 24° 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

50.2° / -6.1°

Feb

50.8° / -7°

Mar

54.3° / -5.1°

Apr

2310.3° / -1.1°

May

4515.5° / 3.3°

Jun

6519.7° / 7.8°

Jul

7922.5° / 10.8°

Aug

7421.6° / 10°

Sep

5416.7° / 6.6°

Oct

2410.2° / 2.8°

Nov

55° / -0.4°

Dec

51.7° / -4.1°

Monthly climate evidence for Hallstavik — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 17 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	0.2°C	-6.1°C	41 mm	10	1.9°C	6 h 38	5	Strong coverage
February	0.8°C	-7°C	32 mm	8.3	0.9°C	9 h 00	5	Strong coverage
March	4.3°C	-5.1°C	28 mm	7	1.1°C	11 h 33	5	Strong coverage
April	10.3°C	-1.1°C	28 mm	6.1	2.4°C	14 h 27	23	Strong coverage
May	15.5°C	3.3°C	41 mm	7.9	5.6°C	17 h 06	45	Strong coverage
June	19.7°C	7.8°C	57 mm	8.7	10.5°C	18 h 49	65	Strong coverage
July	22.5°C	10.8°C	61 mm	8.6	15.4°C	18 h 06	79	Good coverage
August	21.6°C	10°C	62 mm	8.8	16.6°C	15 h 38	74	Strong coverage
September	16.7°C	6.6°C	47 mm	8.5	13.6°C	12 h 46	54	Strong coverage
October	10.2°C	2.8°C	54 mm	9.7	9.6°C	9 h 59	24	Strong coverage
November	5°C	-0.4°C	57 mm	11.5	6.4°C	7 h 22	5	Strong coverage
December	1.7°C	-4.1°C	52 mm	11.5	3.8°C	5 h 54	5	Strong coverage

Records at SVANBERGA_A, 1995–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	10.4°C10 Jan 2007	-30.6°C19 Jan 2013	26 mm11 Jan 2021	83 mm2015 · driest 9 mm in 1996	31
February	11.3°C25 Feb 2021	-32.5°C19 Feb 2011	27 mm16 Feb 2024	57 mm2024 · driest 10 mm in 2025	31
March	17.2°C27 Mar 2017	-32.5°C2 Mar 2005	21 mm27 Mar 2023	95 mm2023 · driest 1 mm in 2022	31
April	23.0°C26 Apr 2007	-16.3°C9 Apr 2013	34 mm19 Apr 2007	84 mm2012 · driest 6 mm in 2005	31
May	28.2°C19 May 2017	-8.4°C11 May 2017	42 mm26 May 2021	124 mm2021 · driest 6 mm in 2018	31
June	30.7°C12 Jun 2006	-1.4°C1 Jun 2004	42 mm27 Jun 2021	114 mm2012 · driest 7 mm in 2023	31
July	33.7°C21 Jul 2022	1.9°C12 Jul 2013	51 mm21 Jul 2008	131 mm2000 · driest 15 mm in 2013	30
August	30.2°C1 Aug 2018	-1.2°C31 Aug 2007	46 mm31 Aug 2012	158 mm2008 · driest 7 mm in 2015	31
September	26.6°C5 Sep 2024	-6.2°C21 Sep 1996	38 mm21 Sep 2014	108 mm2015 · driest 4 mm in 2000	31
October	20.6°C9 Oct 1995	-13.7°C24 Oct 2003	45 mm31 Oct 2001	136 mm2017 · driest 3 mm in 2015	31
November	15.0°C12 Nov 2022	-25.6°C29 Nov 2010	31 mm1 Nov 2016	109 mm2016 · driest 19 mm in 1999	31
December	12.8°C20 Dec 2015	-31.6°C24 Dec 2001	22 mm12 Dec 1999	111 mm1999 · driest 13 mm in 1995	31

Typical days per month at SVANBERGA_A, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	25	<1
February	0	0	24	<1
March	0	0	25	<1
April	0	0	17	<1
May	<1	0	6	1
June	3	<1	<1	2
July	8	<1	0	2
August	5	<1	0	2
September	<1	0	2	1
October	0	0	9	1
November	0	0	16	1
December	0	0	22	<1

How often, not how much — every day in SVANBERGA_A’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%	33%	2%	44%	-2.0–2.5°C
February	0%	29%	1%	33%	-2.3–3.4°C
March	0%	22%	2%	22%	1.7–8.1°C
April	2%	21%	1%	24%	8.2–11.9°C
May	17%	25%	3%	27%	13.8–17.1°C
June	43%	28%	6%	33%	17.4–22.2°C
July	60%	29%	5%	35%	20.3–25.3°C
August	54%	29%	6%	35%	19.7–23.5°C
September	15%	28%	5%	34%	15.2–18.9°C
October	<1%	31%	5%	41%	7.8–12.4°C
November	0%	37%	4%	50%	2.1–6.9°C
December	0%	37%	3%	52%	-1.9–4.7°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.

1996Each stripe is one year’s mean temperature against the 29-year average. Warmest: 2020. Coolest: 2010.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2708426
NOAA station: SWE00139134 · SVANBERGA_A
Station distance: 24.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 24 usable years
Daylight: Calculated from latitude 60.05°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 17 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 SVANBERGA_A is what differs

Norrtälje→Nykvarn→Rimbo→Skänninge→Älmsta→Knutby→

Or put two places side by side: Hallstavik vs Norrtälje

Best time to visitHallstavik.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Hallstavik.

The whole year,
without the guesswork.

Nearby, measured,
and named.