United States · 1991–2020

Best time to visit
Swampscott.

June leads for comfortable weather in Swampscott: typically 23.9°C by day, 14.1°C at night, with 105 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high23.9°C

Typical low14.1°C

Rain in June105 mm

Comfort

June

June · September · August

83climate match

Beach

July

July · August · June

70climate match

Outdoors

May

May · September · October

77climate match

The weakest month is January, scoring 5 against June’s 83 — days reach only 2.8°C, 21° 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

52.8° / -6.2°

Feb

54° / -5.1°

Mar

57.3° / -1.5°

Apr

2913.5° / 3.7°

May

5818.8° / 8.8°

Jun

8323.9° / 14.1°

Jul

7327.3° / 17.4°

Aug

7826.6° / 16.9°

Sep

8122.9° / 13.2°

Oct

4416.8° / 7.4°

Nov

1910.9° / 2.3°

Dec

55.9° / -2.6°

Monthly climate evidence for Swampscott — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 11 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	2.8°C	-6.2°C	95 mm	9.1	4.9°C	9 h 23	5	Strong coverage
February	4°C	-5.1°C	87 mm	7.5	3.3°C	10 h 29	5	Strong coverage
March	7.3°C	-1.5°C	119 mm	8.8	3.5°C	11 h 48	5	Strong coverage
April	13.5°C	3.7°C	110 mm	9.6	5.8°C	13 h 18	29	Strong coverage
May	18.8°C	8.8°C	90 mm	9.8	10.1°C	14 h 35	58	Strong coverage
June	23.9°C	14.1°C	105 mm	9.2	14.7°C	15 h 16	83	Strong coverage
July	27.3°C	17.4°C	88 mm	8.2	18.2°C	15 h	73	Strong coverage
August	26.6°C	16.9°C	83 mm	7.1	18.8°C	13 h 54	78	Strong coverage
September	22.9°C	13.2°C	90 mm	7.5	17.0°C	12 h 26	81	Strong coverage
October	16.8°C	7.4°C	126 mm	8.9	13.5°C	10 h 59	44	Strong coverage
November	10.9°C	2.3°C	104 mm	8.9	10.2°C	9 h 42	19	Strong coverage
December	5.9°C	-2.6°C	118 mm	9.5	7.5°C	9 h 05	5	Strong coverage

Records at MARBLEHEAD, 1984–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	21.7°C7 Jan 2007	-22.8°C16 Jan 2004	102 mm1 Jan 1995	248 mm1995 · driest 17 mm in 1989	41
February	22.2°C22 Feb 2018	-28.9°C4 Feb 2023	73 mm13 Feb 1993	206 mm2008 · driest 7 mm in 2023	41
March	32.8°C31 Mar 1998	-16.1°C9 Mar 2007	101 mm22 Mar 2001	419 mm2010 · driest 17 mm in 2006	41
April	34.4°C29 Apr 2009	-7.8°C5 Apr 1995	125 mm2 Apr 2004	318 mm2004 · driest 19 mm in 1999	41
May	36.1°C4 May 2001	-3.3°C9 May 2017	142 mm14 May 2006	417 mm2006 · driest 16 mm in 2015	40
June	38.3°C25 Jun 2025	1.7°C1 Jun 2020	80 mm8 Jun 2013	280 mm2013 · driest 1 mm in 1999	41
July	38.3°C23 Jul 2011	7.2°C1 Jul 1988	77 mm25 Jul 1990	263 mm2021 · driest 22 mm in 1997	40
August	36.1°C9 Aug 2022	5.6°C29 Aug 2019	79 mm11 Aug 1990	245 mm2011 · driest 14 mm in 2017	40
September	36.1°C9 Sep 2015	0.6°C22 Sep 2020	110 mm2 Sep 2021	217 mm1999 · driest 29 mm in 2016	42
October	28.9°C10 Oct 2011	-10.6°C31 Oct 2020	105 mm23 Oct 2014	292 mm2005 · driest 10 mm in 1994	42
November	26.7°C7 Nov 2024	-14.4°C24 Nov 1989	119 mm15 Nov 1995	260 mm2018 · driest 23 mm in 2001	41
December	25.0°C7 Dec 1998	-22.2°C29 Dec 2017	81 mm12 Dec 1992	226 mm2008 · driest 31 mm in 1988	42

Typical days per month at MARBLEHEAD, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	26	3	4
February	0	0	23	3	4
March	<1	0	19	4	2
April	1	<1	5	4	<1
May	5	<1	<1	3	0
June	14	4	0	3	0
July	23	8	0	3	0
August	22	6	0	3	0
September	9	2	0	3	0
October	1	0	1	4	<1
November	<1	0	11	4	<1
December	0	0	21	4	2

How often, not how much — every day in MARBLEHEAD’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	<1%	29%	11%	34%	-0.5–5.6°C
February	<1%	26%	11%	30%	0.5–6.4°C
March	2%	28%	12%	33%	5.3–9.5°C
April	10%	31%	11%	38%	11.6–15.5°C
May	32%	31%	10%	37%	16.8–20.7°C
June	60%	30%	10%	37%	22.0–25.9°C
July	71%	28%	10%	26%	25.3–28.8°C
August	76%	23%	9%	24%	25.4–28.0°C
September	60%	25%	9%	29%	21.5–24.1°C
October	19%	28%	11%	32%	15.4–18.4°C
November	4%	29%	11%	35%	9.2–13.5°C
December	<1%	30%	13%	36%	2.9–8.3°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.

1985Each stripe is one year’s mean temperature against the 35-year average. Warmest: 1999. Coolest: 2019.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4952468
NOAA station: USC00194502 · MARBLEHEAD
Station distance: 5.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 42.47°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 11 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 MARBLEHEAD is what differs

Lynn→Peabody→South Peabody→Salem→Marblehead→Nahant→

Or put two places side by side: Swampscott vs Lynn

Best time to visitSwampscott.

June

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Swampscott.

The whole year,
without the guesswork.

Nearby, measured,
and named.