Australia · 1991–2020

Best time to visit
Portland.

January leads for comfortable weather in Portland: typically 20.8°C by day, 14.7°C at night, with 33 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJanuary

Typical high20.8°C

Typical low14.7°C

Rain in January33 mm

Comfort

January

January · February · March

88climate match

Beach

February

February · January · March

58climate match

Outdoors

March

March · January · February

89climate match

The weakest month is July, scoring 34 against January’s 88 — days reach only 13.8°C, 10° 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

8820.8° / 14.7°

Feb

8820.7° / 15.2°

Mar

8219.9° / 14°

Apr

7018.2° / 12.3°

May

5216.2° / 10.8°

Jun

4014.4° / 9°

Jul

3413.8° / 8.4°

Aug

3614.5° / 8.6°

Sep

4915.9° / 9.4°

Oct

6217.3° / 10.5°

Nov

7118.4° / 12.1°

Dec

7819.4° / 13.1°

Monthly climate evidence for Portland — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 4 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	20.8°C	14.7°C	33 mm	4.5	17.5°C	14 h 33	88	Strong coverage
February	20.7°C	15.2°C	27 mm	3.6	17.9°C	13 h 36	88	Strong coverage
March	19.9°C	14°C	35 mm	6.3	17.3°C	12 h 27	82	Strong coverage
April	18.2°C	12.3°C	46 mm	8	16.4°C	11 h 09	70	Strong coverage
May	16.2°C	10.8°C	75 mm	12.8	15.9°C	10 h 05	52	Strong coverage
June	14.4°C	9°C	90 mm	13.7	15.5°C	9 h 31	40	Strong coverage
July	13.8°C	8.4°C	99 mm	15.3	14.8°C	9 h 44	34	Strong coverage
August	14.5°C	8.6°C	101 mm	16.7	14.1°C	10 h 39	36	Strong coverage
September	15.9°C	9.4°C	75 mm	12.5	13.8°C	11 h 54	49	Strong coverage
October	17.3°C	10.5°C	52 mm	9.3	14.2°C	13 h 10	62	Strong coverage
November	18.4°C	12.1°C	44 mm	6.7	15.1°C	14 h 16	71	Strong coverage
December	19.4°C	13.1°C	42 mm	5.8	16.2°C	14 h 49	78	Strong coverage

Records at CAPE NELSON LIGHTHOUSE, 1995–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	36.5°C13 Jan 2016	6.6°C3 Jan 2009	74 mm14 Jan 2011	145 mm2011 · driest 0 mm in 2019	31
February	36.0°C2 Feb 1999	8.1°C21 Feb 2017	47 mm25 Feb 2016	64 mm2016 · driest 0 mm in 2009	31
March	33.0°C10 Mar 2002	7.5°C11 Mar 2012	41 mm22 Mar 2017	62 mm2017 · driest 8 mm in 2024	31
April	32.5°C20 Apr 2019	5.8°C30 Apr 2009	38 mm21 Apr 2017	97 mm2014 · driest 9 mm in 1997	31
May	28.3°C9 May 2013	3.0°C27 May 2000	54 mm3 May 2014	173 mm2007 · driest 20 mm in 2024	31
June	21.0°C5 Jun 1998	2.9°C16 Jun 2007	53 mm14 Jun 2014	157 mm2004 · driest 42 mm in 2020	31
July	20.0°C25 Jul 2007	1.4°C21 Jul 2005	39 mm3 Jul 2021	197 mm2021 · driest 37 mm in 2020	31
August	25.2°C27 Aug 2007	2.3°C18 Aug 2004	49 mm14 Aug 2013	243 mm2013 · driest 37 mm in 1998	30
September	29.3°C30 Sep 2023	3.0°C25 Sep 1998	39 mm23 Sep 1998	135 mm2016 · driest 24 mm in 2015	30
October	33.4°C18 Oct 2017	3.5°C21 Oct 1996	46 mm23 Oct 2013	112 mm2020 · driest 6 mm in 2015	30
November	32.8°C29 Nov 2003	4.8°C4 Nov 2003	56 mm4 Nov 2007	87 mm2007 · driest 11 mm in 2006	30
December	34.6°C6 Dec 2007	5.7°C30 Dec 2013	57 mm1 Dec 2024	108 mm2024 · driest 9 mm in 2021	31

Typical days per month at CAPE NELSON LIGHTHOUSE, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	4	2	<1
February	3	1	<1
March	3	<1	1
April	2	<1	1
May	<1	0	2
June	0	0	3
July	0	0	3
August	0	0	3
September	<1	0	2
October	3	<1	1
November	3	<1	1
December	3	1	1

How often, not how much — every day in CAPE NELSON LIGHTHOUSE’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	47%	14%	3%	11%	19.6–22.1°C
February	47%	13%	2%	10%	19.2–21.8°C
March	32%	21%	3%	22%	18.6–21.2°C
April	21%	28%	4%	36%	16.6–19.5°C
May	9%	40%	7%	54%	15.4–17.4°C
June	<1%	47%	9%	69%	13.7–15.1°C
July	<1%	50%	10%	76%	13.2–14.4°C
August	4%	54%	9%	74%	13.5–15.4°C
September	12%	42%	7%	59%	14.9–17.5°C
October	18%	31%	4%	39%	16.1–18.3°C
November	21%	23%	4%	23%	16.7–19.5°C
December	29%	18%	4%	14%	17.9–20.7°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.

1996Each stripe is one year’s mean temperature against the 30-year average. Warmest: 2013. Coolest: 1996.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2152667
NOAA station: ASN00090184 · CAPE NELSON LIGHTHOUSE
Station distance: 10.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude -38.35°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 4 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 CAPE NELSON LIGHTHOUSE is what differs

Portland West→

Or put two places side by side: Portland vs Portland West

Best time to visitPortland.