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Canada · 1991–2020

Best time to visit
Nanaimo.

July leads for comfortable weather in Nanaimo: typically 20.7°C by day, 15.4°C at night, with 21 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high20.7°C

Typical low15.4°C

Rain in July21 mm

Comfort

July

July · August · June

87climate match

Beach

August

August · July · June

60climate match

Outdoors

July

July · August · June

87climate match

The weakest month is January, scoring 5 against July’s 87 — days reach only 7.1°C, 17° 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

57.1° / 3.7°

Feb

107.5° / 3.9°

Mar

159.1° / 4.9°

Apr

3611.7° / 7°

May

5615.3° / 10.1°

Jun

7218.1° / 12.8°

Jul

8720.7° / 15.4°

Aug

8720.8° / 15.8°

Sep

6917.3° / 13.1°

Oct

3412.6° / 9.2°

Nov

89.2° / 5.9°

Dec

57.1° / 3.9°

Monthly climate evidence for Nanaimo — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 23 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	7.1°C	3.7°C	145 mm	16.3	6.9°C	8 h 38	5	Good coverage
February	7.5°C	3.9°C	85 mm	12.8	7.0°C	10 h 03	10	Strong coverage
March	9.1°C	4.9°C	87 mm	14	7.9°C	11 h 43	15	Strong coverage
April	11.7°C	7°C	55 mm	10.4	9.8°C	13 h 38	36	Strong coverage
May	15.3°C	10.1°C	45 mm	8.6	12.8°C	15 h 16	56	Strong coverage
June	18.1°C	12.8°C	38 mm	7.7	15.2°C	16 h 12	72	Strong coverage
July	20.7°C	15.4°C	21 mm	4.4	17.1°C	15 h 50	87	Strong coverage
August	20.8°C	15.8°C	24 mm	4	17.3°C	14 h 24	87	Strong coverage
September	17.3°C	13.1°C	49 mm	7.6	15.0°C	12 h 32	69	Strong coverage
October	12.6°C	9.2°C	95 mm	13.3	11.6°C	10 h 41	34	Strong coverage
November	9.2°C	5.9°C	139 mm	17.1	9.1°C	9 h 03	8	Strong coverage
December	7.1°C	3.9°C	140 mm	16.9	7.5°C	8 h 13	5	Strong coverage

Records at ENTRANCE ISLAND, 1987–2024
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.5°C29 Jan 2024	-9.0°C12 Jan 2024	44 mm28 Jan 2018	278 mm2006 · driest 57 mm in 2017	32
February	14.0°C2 Feb 1991	-10.5°C1 Feb 1989	53 mm1 Feb 1991	169 mm1999 · driest 24 mm in 1988	33
March	17.5°C29 Mar 2004	-4.0°C8 Mar 2002	58 mm9 Mar 2016	181 mm2016 · driest 9 mm in 2019	34
April	21.5°C18 Apr 2016	0.0°C19 Apr 2008	35 mm24 Apr 2015	107 mm2017 · driest 10 mm in 2016	32
May	26.0°C15 May 2023	4.0°C16 May 2017	32 mm15 May 2017	96 mm1997 · driest 1 mm in 2015	33
June	29.5°C26 Jun 2021	1.5°C8 Jun 2017	33 mm8 Jun 2006	84 mm1999 · driest 2 mm in 2015	33
July	29.0°C29 Jul 2022	10.0°C4 Jul 1989	23 mm5 Jul 1988	45 mm2007 · driest 0 mm in 2013	33
August	29.5°C10 Aug 1990	9.0°C5 Aug 2022	33 mm29 Aug 1991	104 mm1991 · driest 1 mm in 2011	32
September	26.0°C8 Sep 2011	6.0°C7 Sep 2022	41 mm18 Sep 2004	139 mm2021 · driest 2 mm in 2012	32
October	20.0°C3 Oct 2022	0.5°C28 Oct 1991	68 mm24 Oct 2023	199 mm2016 · driest 10 mm in 1987	32
November	16.5°C4 Nov 2023	-5.0°C27 Nov 2006	73 mm14 Nov 2021	317 mm2021 · driest 60 mm in 2014	32
December	17.0°C24 Dec 2005	-10.0°C27 Dec 2021	184 mm27 Dec 2022	622 mm2022 · driest 29 mm in 2013	33

Typical days per month at ENTRANCE ISLAND, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	3	5	1
February	0	2	3	<1
March	0	<1	3	<1
April	0	0	1	0
May	0	0	1	0
June	<1	0	1	0
July	2	0	<1	0
August	2	0	<1	0
September	<1	0	1	0
October	0	0	3	0
November	0	<1	5	<1
December	0	3	5	1

How often, not how much — every day in ENTRANCE ISLAND’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%	53%	15%	72%	6.0–8.5°C
February	0%	43%	8%	59%	6.0–8.6°C
March	0%	44%	8%	58%	8.0–10.3°C
April	<1%	34%	4%	46%	10.8–12.7°C
May	7%	28%	3%	32%	13.4–17.3°C
June	23%	25%	4%	31%	17.0–19.7°C
July	64%	14%	2%	12%	19.4–22.1°C
August	65%	13%	2%	9%	19.9–21.9°C
September	16%	24%	5%	29%	16.6–18.5°C
October	<1%	41%	9%	60%	11.9–13.9°C
November	0%	56%	16%	79%	8.0–10.3°C
December	0%	56%	16%	79%	5.3–8.2°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.

1988Each stripe is one year’s mean temperature against the 24-year average. Warmest: 2015. Coolest: 2009.2022

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 6085772
NOAA station: CA00102BFHH · ENTRANCE ISLAND
Station distance: 10.6 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 24 usable years
Daylight: Calculated from latitude 49.17°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 23 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 ENTRANCE ISLAND is what differs

Harewood→Departure Bay→Gabriola→Wellington→South End→East Wellington→

Or put two places side by side: Nanaimo vs Harewood

Best time to visitNanaimo.

July

August

July

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Nanaimo.

The whole year,
without the guesswork.

Nearby, measured,
and named.