Canada · 1991–2020

Best time to visit
Barrow Bay.

July leads for comfortable weather in Barrow Bay: typically 24°C by day, 13.5°C at night, with 71 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high24°C

Typical low13.5°C

Rain in July71 mm

Comfort

July

July · August · June

87climate match

Beach

July

July · August · June

52climate match

Outdoors

June

June · September · August

79climate match

The weakest month is January, scoring 5 against July’s 87 — days reach only -2.2°C, 26° 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

5-2.2° / -10°

Feb

5-1.8° / -10.4°

Mar

52.8° / -6.2°

Apr

1410.1° / 0.2°

May

4716.8° / 5.5°

Jun

7421.8° / 10.7°

Jul

8724° / 13.5°

Aug

8523.6° / 13°

Sep

6119.9° / 9.3°

Oct

2513.2° / 4.6°

Nov

56.7° / -0.5°

Dec

50.7° / -5.7°

Monthly climate evidence for Barrow Bay — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 15 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-2.2°C	-10°C	108 mm	18.6	3.3°C	9 h 08	5	Good coverage
February	-1.8°C	-10.4°C	77 mm	13.6	1.9°C	10 h 20	5	Good coverage
March	2.8°C	-6.2°C	65 mm	11	1.4°C	11 h 46	5	Good coverage
April	10.1°C	0.2°C	82 mm	10.4	2.3°C	13 h 25	14	Good coverage
May	16.8°C	5.5°C	81 mm	9.6	4.2°C	14 h 49	47	Good coverage
June	21.8°C	10.7°C	77 mm	8.5	9.6°C	15 h 35	74	Good coverage
July	24°C	13.5°C	71 mm	8.4	17.2°C	15 h 17	87	Good coverage
August	23.6°C	13°C	76 mm	7.7	19.7°C	14 h 04	85	Good coverage
September	19.9°C	9.3°C	96 mm	10.7	17.9°C	12 h 28	61	Good coverage
October	13.2°C	4.6°C	107 mm	14.4	13.0°C	10 h 53	25	Good coverage
November	6.7°C	-0.5°C	111 mm	15.8	8.5°C	9 h 29	5	Good coverage
December	0.7°C	-5.7°C	104 mm	17	5.5°C	8 h 47	5	Good coverage

Records at WIARTON A, 1947–2014
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.8°C25 Jan 1950	-36.4°C18 Jan 1977	48 mm31 Jan 1982	201 mm1997 · driest 40 mm in 1981	67
February	16.9°C26 Feb 2000	-34.8°C18 Feb 1979	49 mm21 Feb 1997	154 mm2006 · driest 21 mm in 1998	66
March	27.2°C21 Mar 2012	-30.7°C2 Mar 1980	47 mm17 Mar 1973	149 mm1998 · driest 8 mm in 2010	67
April	30.0°C28 Apr 1990	-17.8°C6 Apr 2003	48 mm10 Apr 2011	166 mm2013 · driest 15 mm in 1976	67
May	32.1°C30 May 2006	-5.0°C7 May 1966	62 mm23 May 2004	187 mm2004 · driest 12 mm in 1951	67
June	33.3°C26 Jun 1966	-1.6°C8 Jun 1977	68 mm23 Jun 1950	164 mm2010 · driest 6 mm in 1964	67
July	33.3°C18 Jul 1968	3.3°C5 Jul 1972	105 mm28 Jul 1969	201 mm1980 · driest 0 mm in 1989	68
August	35.0°C6 Aug 1947	1.7°C30 Aug 1965	73 mm20 Aug 1968	191 mm1967 · driest 18 mm in 1993	68
September	35.6°C3 Sep 1953	-3.4°C27 Sep 1989	89 mm12 Sep 1963	196 mm1986 · driest 13 mm in 2004	68
October	28.3°C1 Oct 1971	-7.2°C29 Oct 1965	69 mm15 Oct 1954	207 mm2013 · driest 16 mm in 1952	67
November	23.3°C1 Nov 1950	-18.0°C29 Nov 1995	46 mm10 Nov 1988	202 mm1989 · driest 25 mm in 1986	66
December	18.1°C5 Dec 2001	-26.6°C20 Dec 2004	46 mm6 Dec 1962	193 mm2008 · driest 32 mm in 1994	67

Typical days per month at WIARTON A, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	2	22
February	0	0	27	2	17
March	<1	0	26	2	10
April	<1	0	15	3	4
May	3	<1	2	3	<1
June	7	1	0	3	0
July	12	1	0	2	0
August	10	1	0	3	0
September	4	<1	<1	3	0
October	<1	0	4	4	1
November	0	0	16	4	9
December	0	0	26	3	18

How often, not how much — every day in WIARTON 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%	58%	7%	81%	-5.4–0.3°C
February	0%	47%	6%	64%	-5.5–0.7°C
March	<1%	35%	6%	48%	-0.6–4.4°C
April	5%	33%	7%	41%	7.0–12.3°C
May	20%	28%	8%	32%	13.9–19.0°C
June	45%	28%	8%	32%	19.6–23.3°C
July	68%	23%	7%	24%	22.3–26.0°C
August	63%	27%	9%	29%	21.5–25.0°C
September	31%	34%	11%	47%	17.8–21.6°C
October	9%	40%	10%	56%	10.8–15.5°C
November	<1%	50%	11%	74%	4.1–8.6°C
December	0%	57%	10%	79%	-2.6–2.7°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.

1948Each stripe is one year’s mean temperature against the 63-year average. Warmest: 2012. Coolest: 1978.2013

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5894284
NOAA station: CA006119500 · WIARTON A
Station distance: 25.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 23 usable years
Daylight: Calculated from latitude 44.96°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 15 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 WIARTON A is what differs

Wiarton→Lion's Head→Adamsville→Cape Croker→Centreville→Clay Hills→

Or put two places side by side: Barrow Bay vs Wiarton

Best time to visitBarrow Bay.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Barrow Bay.

The whole year,
without the guesswork.

Nearby, measured,
and named.