Canada · 1991–2020

Best time to visit
Chatham.

June leads for comfortable weather in Chatham: typically 25.7°C by day, 15.3°C at night, with 71 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJune

Typical high25.7°C

Typical low15.3°C

Rain in June71 mm

Comfort

June

June · September · August

84climate match

Beach

July

July · August · June

74climate match

Outdoors

May

May · September · October

80climate match

The weakest month is January, scoring 5 against June’s 84 — days reach only -0.3°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

5-0.3° / -6.9°

Feb

51.5° / -6°

Mar

56.4° / -2°

Apr

2813.4° / 3.4°

May

6320.2° / 9.7°

Jun

8425.7° / 15.3°

Jul

7227.8° / 17.6°

Aug

7826.7° / 17.1°

Sep

8323.1° / 13.1°

Oct

4916° / 7.5°

Nov

168.9° / 2°

Dec

52.7° / -3.1°

Monthly climate evidence for Chatham — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 32 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-0.3°C	-6.9°C	60 mm	10.3	1.8°C	9 h 23	5	Good coverage
February	1.5°C	-6°C	65 mm	8.2	0.7°C	10 h 29	5	Good coverage
March	6.4°C	-2°C	59 mm	9.5	1.3°C	11 h 48	5	Good coverage
April	13.4°C	3.4°C	93 mm	11.2	4.5°C	13 h 18	28	Good coverage
May	20.2°C	9.7°C	91 mm	11.1	10.5°C	14 h 34	63	Good coverage
June	25.7°C	15.3°C	71 mm	8.6	17.8°C	15 h 16	84	Good coverage
July	27.8°C	17.6°C	80 mm	8.1	22.9°C	15 h	72	Good coverage
August	26.7°C	17.1°C	68 mm	7.9	23.6°C	13 h 54	78	Good coverage
September	23.1°C	13.1°C	76 mm	8.1	21.3°C	12 h 26	83	Good coverage
October	16°C	7.5°C	72 mm	9.3	16.1°C	10 h 59	49	Good coverage
November	8.9°C	2°C	69 mm	9.3	10.3°C	9 h 43	16	Good coverage
December	2.7°C	-3.1°C	61 mm	10.5	5.3°C	9 h 05	5	Good coverage

Records at CHATHAM WPCP, 1983–2019
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.0°C7 Jan 2008	-27.0°C19 Jan 1994	38 mm17 Jan 2006	101 mm1993 · driest 8 mm in 2015	31
February	19.0°C26 Feb 2000	-23.5°C10 Feb 1994	160 mm20 Feb 2018	212 mm2018 · driest 8 mm in 2007	29
March	25.0°C30 Mar 1998	-22.0°C3 Mar 2003	35 mm13 Mar 1997	119 mm1985 · driest 2 mm in 2018	28
April	30.0°C25 Apr 1990	-8.0°C5 Apr 1995	126 mm6 Apr 2016	165 mm2016 · driest 20 mm in 2008	28
May	33.0°C28 May 2012	-2.5°C3 May 1986	52 mm11 May 2018	139 mm2017 · driest 17 mm in 1999	31
June	38.5°C25 Jun 1988	1.5°C25 Jun 1986	66 mm27 Jun 1983	154 mm1996 · driest 5 mm in 2007	30
July	37.5°C7 Jul 1988	6.0°C1 Jul 1986	86 mm29 Jul 1983	256 mm1983 · driest 8 mm in 2001	31
August	36.5°C8 Aug 2001	6.0°C28 Aug 1986	67 mm14 Aug 1985	184 mm1985 · driest 19 mm in 1996	29
September	33.5°C8 Sep 2002	1.5°C28 Sep 1991	85 mm6 Sep 1990	228 mm1996 · driest 22 mm in 2015	26
October	32.0°C8 Oct 2007	-4.5°C31 Oct 1988	57 mm5 Oct 1995	143 mm2001 · driest 27 mm in 2005	28
November	24.0°C4 Nov 2015	-10.0°C10 Nov 1986	32 mm10 Nov 1995	175 mm1985 · driest 22 mm in 1997	27
December	19.0°C6 Dec 1998	-23.0°C22 Dec 1989	34 mm16 Dec 2000	134 mm1990 · driest 2 mm in 2010	29

Typical days per month at CHATHAM WPCP, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	23	2	6
February	0	0	21	2	4
March	0	0	19	2	3
April	<1	0	7	3	<1
May	6	1	0	2	0
June	16	5	0	2	0
July	22	7	0	2	0
August	21	5	0	2	0
September	11	2	0	3	0
October	2	<1	1	2	0
November	0	0	10	2	<1
December	0	0	20	2	4

How often, not how much — every day in CHATHAM WPCP’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%	34%	5%	41%	-3.4–3.2°C
February	0%	28%	7%	32%	-1.7–3.8°C
March	2%	30%	6%	43%	3.8–8.5°C
April	11%	37%	9%	50%	11.2–15.3°C
May	35%	35%	9%	45%	17.4–23.1°C
June	63%	29%	9%	35%	23.9–27.2°C
July	75%	25%	8%	26%	25.9–29.9°C
August	75%	25%	8%	22%	24.7–28.4°C
September	53%	29%	10%	32%	21.3–24.8°C
October	15%	30%	7%	36%	13.8–17.3°C
November	1%	33%	9%	43%	6.3–11.0°C
December	0%	34%	7%	44%	-1.9–5.9°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.

1984Each stripe is one year’s mean temperature against the 22-year average. Warmest: 1998. Coolest: 1989.2006

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5920457
NOAA station: CA006131415 · CHATHAM WPCP
Station distance: 4.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 18 usable years
Daylight: Calculated from latitude 42.41°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 32 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 CHATHAM WPCP is what differs

Tilbury→Appledore→Bagnall→Baldoon→Bear Line→Bradley→

Or put two places side by side: Chatham vs Tilbury

Best time to visitChatham.

June

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Chatham.

The whole year,
without the guesswork.

Nearby, measured,
and named.