Canada · 1991–2020

Best time to visit
Derrynane.

August leads for comfortable weather in Derrynane: typically 23.9°C by day, 12.9°C at night, with 85 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortAugust

Typical high23.9°C

Typical low12.9°C

Rain in August85 mm

Comfort

August

August · July · June

85climate match

Beach

July

July · August · June

53climate match

Outdoors

September

September · June · May

85climate match

The weakest month is January, scoring 5 against August’s 85 — days reach only -3.7°C, 28° 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

5-3.7° / -11°

Feb

5-3° / -11.3°

Mar

52.3° / -6.6°

Apr

1410° / -0.3°

May

5117.5° / 6.3°

Jun

7722.5° / 11.4°

Jul

8424.8° / 13.6°

Aug

8523.9° / 12.9°

Sep

6820.3° / 9.5°

Oct

3112.9° / 4°

Nov

55.4° / -1.5°

Dec

5-0.6° / -6.8°

Monthly climate evidence for Derrynane — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.7°C	-11°C	74 mm	14.3	9 h 14	5	Good coverage
February	-3°C	-11.3°C	64 mm	12.2	10 h 24	5	Good coverage
March	2.3°C	-6.6°C	63 mm	9.6	11 h 47	5	Good coverage
April	10°C	-0.3°C	74 mm	10.3	13 h 22	14	Good coverage
May	17.5°C	6.3°C	82 mm	9.1	14 h 43	51	Good coverage
June	22.5°C	11.4°C	83 mm	8.8	15 h 27	77	Strong coverage
July	24.8°C	13.6°C	86 mm	7.4	15 h 10	84	Strong coverage
August	23.9°C	12.9°C	85 mm	7.6	14 h	85	Strong coverage
September	20.3°C	9.5°C	76 mm	7.8	12 h 27	68	Good coverage
October	12.9°C	4°C	73 mm	10.4	10 h 55	31	Strong coverage
November	5.4°C	-1.5°C	75 mm	11.7	9 h 35	5	Good coverage
December	-0.6°C	-6.8°C	70 mm	12.5	8 h 55	5	Good coverage

Records at MOUNT FOREST (AUT), 1992–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	12.5°C13 Jan 2005	-31.1°C21 Jan 2005	25 mm17 Jan 2017	118 mm2017 · driest 22 mm in 2021	34
February	13.7°C26 Feb 2000	-31.5°C16 Feb 2015	63 mm12 Feb 2011	113 mm2011 · driest 23 mm in 2012	33
March	25.7°C21 Mar 2012	-29.5°C3 Mar 2003	37 mm24 Mar 2016	156 mm2016 · driest 19 mm in 2001	33
April	26.8°C15 Apr 2023	-15.4°C5 Apr 2016	35 mm12 Apr 2014	140 mm2024 · driest 0 mm in 2002	33
May	31.9°C29 May 2006	-6.2°C8 May 2020	95 mm12 May 2000	213 mm2000 · driest 0 mm in 2002	32
June	32.9°C27 Jun 2005	0.2°C6 Jun 1998	81 mm22 Jun 2017	245 mm2017 · driest 1 mm in 2002	32
July	32.9°C13 Jul 2005	4.1°C2 Jul 2007	71 mm13 Jul 2023	193 mm2010 · driest 0 mm in 2002	32
August	33.7°C8 Aug 2001	3.4°C26 Aug 2017	71 mm21 Aug 2018	196 mm2018 · driest 0 mm in 2002	31
September	31.8°C6 Sep 2007	-1.9°C22 Sep 1999	80 mm22 Sep 2021	197 mm2021 · driest 0 mm in 1995	30
October	28.1°C5 Oct 2025	-6.2°C18 Oct 2009	47 mm11 Oct 2006	164 mm2001 · driest 0 mm in 2002	30
November	22.0°C9 Nov 2020	-18.6°C29 Nov 1995	47 mm29 Nov 2011	132 mm2008 · driest 0 mm in 1995	31
December	15.7°C6 Dec 1998	-27.4°C20 Dec 2004	30 mm27 Dec 2023	135 mm2008 · driest 0 mm in 1996	33

Typical days per month at MOUNT FOREST (AUT), 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	27	2
February	0	0	26	2
March	<1	0	26	2
April	<1	0	17	2
May	3	<1	3	2
June	9	1	0	2
July	15	3	0	3
August	11	1	0	2
September	5	<1	<1	2
October	<1	0	6	2
November	0	0	18	2
December	0	0	27	2

How often, not how much — every day in MOUNT FOREST (AUT)’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%	44%	5%	57%	-6.7–-0.6°C
February	0%	42%	6%	60%	-6.7–0.6°C
March	<1%	33%	7%	45%	0.0–6.5°C
April	6%	36%	9%	51%	8.3–12.7°C
May	27%	30%	9%	37%	15.1–20.9°C
June	52%	30%	9%	35%	20.9–24.6°C
July	68%	25%	10%	28%	22.4–27.0°C
August	67%	26%	9%	28%	21.8–25.2°C
September	41%	26%	8%	31%	18.1–22.4°C
October	10%	34%	7%	43%	11.4–15.1°C
November	<1%	39%	7%	60%	1.8–8.6°C
December	0%	42%	7%	60%	-3.7–2.6°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.

1995Each stripe is one year’s mean temperature against the 29-year average. Warmest: 2012. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5938112
NOAA station: CA006145504 · MOUNT FOREST (AUT)
Station distance: 13.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 43.95°, 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 MOUNT FOREST (AUT) is what differs

Mount Forest→Harriston→Calderwood→Clare→Cotswold→Damascus→

Or put two places side by side: Derrynane vs Mount Forest

Best time to visitDerrynane.