Canada · 1991–2020

Best time to visit
Orillia.

August leads for comfortable weather in Orillia: typically 25°C by day, 14.9°C at night, with 100 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high25°C

Typical low14.9°C

Rain in August100 mm

Comfort

August

August · June · July

82climate match

Beach

July

July · August · June

63climate match

Outdoors

September

September · May · June

81climate match

The weakest month is January, scoring 5 against August’s 82 — days reach only -3.5°C, 27° 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

5-3.5° / -11.7°

Feb

5-2.4° / -11.6°

Mar

53.2° / -6.1°

Apr

1510.5° / 0.3°

May

5318.3° / 7.2°

Jun

8023.4° / 12.9°

Jul

8026.1° / 15.9°

Aug

8225° / 14.9°

Sep

7120.8° / 11.1°

Oct

2913° / 4.8°

Nov

56.3° / -0.9°

Dec

50° / -7°

Monthly climate evidence for Orillia — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.5°C	-11.7°C	113 mm	15.2	9 h 10	5	Good coverage
February	-2.4°C	-11.6°C	88 mm	11.9	10 h 21	5	Good coverage
March	3.2°C	-6.1°C	72 mm	10.9	11 h 46	5	Good coverage
April	10.5°C	0.3°C	86 mm	10.5	13 h 24	15	Good coverage
May	18.3°C	7.2°C	92 mm	10.2	14 h 47	53	Good coverage
June	23.4°C	12.9°C	96 mm	9.2	15 h 32	80	Good coverage
July	26.1°C	15.9°C	86 mm	8.3	15 h 14	80	Good coverage
August	25°C	14.9°C	100 mm	9.1	14 h 03	82	Good coverage
September	20.8°C	11.1°C	81 mm	8.9	12 h 28	71	Strong coverage
October	13°C	4.8°C	90 mm	12	10 h 54	29	Strong coverage
November	6.3°C	-0.9°C	98 mm	13	9 h 31	5	Strong coverage
December	0°C	-7°C	106 mm	14.1	8 h 50	5	Good coverage

Records at ORILLIA BRAIN, 1992–2024
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	12.5°C8 Jan 2008	-35.5°C16 Jan 1994	57 mm11 Jan 2020	205 mm1997 · driest 34 mm in 2018	26
February	13.5°C9 Feb 2024	-30.0°C13 Feb 2016	40 mm6 Feb 2008	160 mm2017 · driest 20 mm in 1994	27
March	24.0°C30 Mar 1998	-31.5°C3 Mar 2003	39 mm24 Mar 2016	187 mm2016 · driest 17 mm in 1999	25
April	32.0°C16 Apr 2002	-13.0°C5 Apr 2018	50 mm3 Apr 2009	205 mm2024 · driest 23 mm in 2001	26
May	32.5°C31 May 2011	-3.5°C9 May 2020	75 mm23 May 2004	214 mm2004 · driest 28 mm in 2021	26
June	34.5°C30 Jun 2018	1.0°C15 Jun 2021	71 mm29 Jun 1996	179 mm2010 · driest 36 mm in 2018	27
July	35.0°C5 Jul 2018	7.0°C3 Jul 1995	105 mm19 Jul 2007	175 mm2007 · driest 29 mm in 2001	27
August	36.0°C1 Aug 2006	5.5°C31 Aug 2006	66 mm16 Aug 2016	169 mm2020 · driest 19 mm in 2021	27
September	34.0°C9 Sep 2002	-2.5°C30 Sep 1993	61 mm10 Sep 2000	147 mm1996 · driest 16 mm in 2018	28
October	29.0°C4 Oct 2023	-7.0°C31 Oct 2020	56 mm5 Oct 1995	155 mm2006 · driest 18 mm in 2000	28
November	24.0°C10 Nov 2020	-19.0°C13 Nov 2019	52 mm2 Nov 1999	231 mm1995 · driest 38 mm in 2016	28
December	19.0°C16 Dec 2021	-32.0°C20 Dec 2004	59 mm25 Dec 2022	195 mm2016 · driest 35 mm in 1997	24

Typical days per month at ORILLIA BRAIN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	4	14
February	0	0	26	3	11
March	0	0	26	2	8
April	<1	<1	16	3	5
May	4	<1	2	3	<1
June	11	3	0	3	0
July	21	5	0	2	0
August	16	2	0	3	0
September	6	<1	<1	3	0
October	<1	0	5	3	2
November	0	0	17	3	7
December	0	0	27	4	12

How often, not how much — every day in ORILLIA BRAIN’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%	48%	13%	66%	-6.3–-0.7°C
February	0%	43%	9%	58%	-5.5–0.3°C
March	<1%	35%	7%	50%	1.4–5.6°C
April	7%	36%	10%	48%	8.3–12.8°C
May	30%	32%	10%	42%	16.2–21.0°C
June	58%	31%	11%	35%	21.7–25.4°C
July	70%	28%	8%	32%	24.2–28.2°C
August	68%	29%	10%	31%	23.0–27.0°C
September	43%	29%	9%	36%	18.8–22.6°C
October	9%	39%	9%	59%	11.1–15.1°C
November	1%	44%	11%	63%	3.0–9.6°C
December	0%	46%	14%	64%	-3.6–2.9°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 6094325
NOAA station: CA006115811 · ORILLIA BRAIN
Station distance: 1.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 44.61°, mid-month, sunrise to sunset including refraction. Not a station measurement.
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 ORILLIA BRAIN is what differs

Amigo Beach→Patrick Fogarty Catholic Secondary School→Ardtrea→Atherley→Bass Lake Park→Baywood Park→

Or put two places side by side: Orillia vs Amigo Beach

Best time to visitOrillia.