Australia · 1991–2020

Best time to visit
Karratha

For Karratha, June has the most comfortable weather in our climate comparison. Typical daytime highs are 26.6°C, nights average 15.2°C, and rainfall totals about 44 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.

Best all-round monthJune

Typical daytime high26.6°C

Typical night-time low15.2°C

June rainfall44 mm

Overall comfort

June

Other strong months: July and August

90/100 weather score

Beach weather

May

Other strong months: October and September

89/100 weather score

Outdoor sightseeing

July

Other strong months: June and August

73/100 weather score

Make the answer personal

Choose the weather
that suits you.

Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.

Daytime high: at least 18°CDaytime high: at most 29°CMonthly rain: no more than 100 mmWet days: no more than 10

3 months fit your choices for Karratha

June26.6°C day · 44 mm rain · 2.4 wet days

July26.4°C day · 13 mm rain · 1 wet days

August28.3°C day · 3 mm rain · 0.5 wet days

February has the lowest comfort score at 31 out of 100, compared with June at 90. The main reason is that days average 35.7°C, 12° above the 24°C the score treats as ideal.

Quick answers

Planning a trip to Karratha?

These answers come from the same measured monthly climate record shown on this page.

When is the best time to visit Karratha?

June is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 26.6°C and 44 mm of rain.

What is the hottest month in Karratha?

March is hottest in this record, with a typical daytime high of 36.3°C and a night-time low of 26°C.

Which month has the least rain?

October has the lowest monthly rainfall total at 0 mm.

Is this a weather forecast?

No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.

Month by month

See how the weather
changes through the year.

The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.

3636° / 26.9°

3135.7° / 26.8°

3736.3° / 26°

5134.5° / 23°

7430.1° / 18.3°

9026.6° / 15.2°

9026.4° / 13.9°

8528.3° / 14.3°

7331° / 17.1°

5634.1° / 20.9°

4935.1° / 23.2°

4135.9° / 25.7°

Monthly climate evidence for Karratha — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 13 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	36°C	26.9°C	57 mm	3.5	29.0°C	13 h 16	36	Strong coverage
February	35.7°C	26.8°C	95 mm	4.2	29.5°C	12 h 49	31	Strong coverage
March	36.3°C	26°C	52 mm	3.2	29.9°C	12 h 16	37	Strong coverage
April	34.5°C	23°C	16 mm	1.5	29.0°C	11 h 39	51	Strong coverage
May	30.1°C	18.3°C	29 mm	2.1	26.7°C	11 h 09	74	Strong coverage
June	26.6°C	15.2°C	44 mm	2.4	24.2°C	10 h 53	90	Strong coverage
July	26.4°C	13.9°C	13 mm	1	22.9°C	10 h 59	90	Strong coverage
August	28.3°C	14.3°C	3 mm	0.5	22.6°C	11 h 24	85	Strong coverage
September	31°C	17.1°C	1 mm	0.2	23.6°C	12 h 00	73	Strong coverage
October	34.1°C	20.9°C	0 mm	0	25.2°C	12 h 36	56	Strong coverage
November	35.1°C	23.2°C	2 mm	0.1	26.6°C	13 h 08	49	Strong coverage
December	35.9°C	25.7°C	17 mm	1	27.8°C	13 h 23	41	Strong coverage

Records at KARRATHA AERO, 1993–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	48.4°C13 Jan 2022	20.5°C4 Jan 2007	274 mm20 Jan 2025	394 mm2025 · driest 0 mm in 2022	33
February	47.7°C18 Feb 1998	19.4°C13 Feb 2013	211 mm9 Feb 2017	349 mm2011 · driest 0 mm in 2005	33
March	45.8°C1 Mar 2005	18.5°C27 Mar 2001	191 mm2 Mar 2004	291 mm2004 · driest 0 mm in 2013	33
April	41.3°C5 Apr 2005	14.7°C29 Apr 2006	58 mm9 Apr 1995	95 mm2006 · driest 0 mm in 2010	33
May	38.3°C6 May 2019	10.5°C30 May 2023	107 mm6 May 2014	215 mm2022 · driest 0 mm in 2017	33
June	32.8°C18 Jun 2010	7.1°C15 Jun 2006	209 mm25 Jun 2013	272 mm2013 · driest 0 mm in 2015	33
July	34.0°C28 Jul 2017	6.9°C19 Jul 2006	67 mm11 Jul 2005	71 mm2005 · driest 0 mm in 2021	33
August	39.1°C29 Aug 2020	8.0°C3 Aug 2018	27 mm2 Aug 2024	48 mm2024 · driest 0 mm in 2018	33
September	40.7°C30 Sep 2006	10.0°C1 Sep 2004	15 mm15 Sep 2010	21 mm2010 · driest 0 mm in 2003	33
October	44.7°C22 Oct 2002	11.1°C1 Oct 2009	6 mm27 Oct 2013	6 mm2013 · driest 0 mm in 2004	33
November	44.8°C5 Nov 2013	16.0°C10 Nov 1995	38 mm2 Nov 2011	38 mm2011 · driest 0 mm in 1998	33
December	46.9°C28 Dec 1996	18.7°C12 Dec 2008	113 mm31 Dec 2013	113 mm2013 · driest 0 mm in 2022	33

Typical days per month at KARRATHA AERO, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	30	30	1
February	27	27	2
March	31	30	1
April	29	28	<1
May	30	16	<1
June	23	2	1
July	23	2	<1
August	28	6	0
September	29	18	0
October	30	26	0
November	29	28	0
December	30	30	<1

How often different weather occurs at KARRATHA AERO, based on its daily record
Month	Dry days reaching 20°C	Wet days	Days with heavy rain	Weeks with 3+ wet days	Typical high by year
January	89%	11%	4%	10%	34.6–37.4°C
February	85%	15%	7%	15%	33.7–37.7°C
March	89%	11%	4%	9%	34.8–37.8°C
April	95%	4%	2%	3%	33.1–36.2°C
May	94%	7%	3%	5%	28.4–31.4°C
June	92%	7%	4%	5%	25.3–28.0°C
July	97%	4%	1%	1%	25.6–27.6°C
August	99%	2%	<1%	<1%	27.0–29.7°C
September	99%	1%	<1%	<1%	29.5–32.5°C
October	100%	<1%	0%	0%	31.7–36.2°C
November	100%	<1%	<1%	<1%	33.3–36.9°C
December	97%	3%	1%	2%	34.7–38.5°C

A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.

1994Each stripe is one year’s mean temperature against the 32-year average. Warmest: 2019. Coolest: 1995.2025

The evidence behind this page

Where these figures
come from.

Place identity: GeoNames 6620339
NOAA station: ASN00004083 · KARRATHA AERO
Station distance: 8.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude -20.74°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 13 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.

Next step

Choose your month.
Then plan the details.

The weather comparison for Karratha is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.

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