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Weather extremes

How extreme does Karratha's weather get?

The hottest, coldest, wettest and snowiest days Karratha has recorded — the outer limits of what its weather can do, and how far they sit beyond a normal day.

Based on 50+ years of daily weather observations (1972–present), from the Karratha Aero station 8 km away. Updated through May 2026 — an all-time extreme only changes when a more extreme day actually occurs, so some dates are old. That is normal, not stale data.

The four kinds of extreme

The hottest, coldest, wettest and snowiest single days Karratha has recorded — each shown against what a normal day that time of year looks like.

🔥 Hottest day
119°F Jan 21, 2003

That is about 22°F hotter than a normal January afternoon in Karratha (typical high near 97°F).

The three most extreme on record

1 119°F Jan 21, 2003
2 119°F Jan 13, 2022
3 118°F Feb 18, 1998
❄️ Coldest night
44°F Jul 19, 2006

About 13°F colder than a normal July night in Karratha (typical low near 57°F).

The three most extreme on record

1 44°F Jul 19, 2006
2 45°F Jun 14, 2006
3 45°F Jun 15, 2006
🌧️ Most rain in one day
10.80 in Jan 20, 2025

More rain in a single day than Karratha usually gets in the whole month of January (typical January total about 2.2 in).

The three most extreme on record

1 10.80 in Jan 20, 2025recent
2 8.36 in Jan 10, 2006
3 8.29 in Feb 9, 2017

How hot and cold it gets, month by month

The shaded band is the normal range of daily temperatures for each month. The dots show the most extreme it has ever been — so you can see how far beyond a normal day the records really sit.

30°50°70°90°110°130° all-time high 119°F JanFebMarAprMayJunJulAugSepOctNovDec
normal range of daily temperatureshottest ever recordedcoldest ever recorded

Karratha's record heat sits well above even a hot day for the season — January's 119°F is about 22°F beyond a normal hot afternoon. Its record cold is just as far below a normal winter night — the dots mark how rare each extreme really is.

In plain terms

In a normal year, Karratha's warmest days reach the high 90s°F and its coldest nights drop to the high 50s°F. But across the record it has gone as high as 119°F and as low as 44°F. A single day has delivered over 11 inches of rain. Those are the outer edges worth knowing if you are moving here, planning a trip, or thinking about a house.
Methodology & sources

Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Karratha Aero, a weather station, about 8 km from the city centre. The underlying daily records come from NOAA's global station network.

How we build these numbers →