Karratha in Winter
In winter (June, July and August), Karratha sees average daytime highs around 24°C and overnight lows near 19°C, with 46 mm of rain over about 5 wet days across the season. It is the coldest season of the year and the 3rd-wettest season.
Across winter, daytime highs hold fairly steady around 24°C. The sky is clear or mostly clear about 82% of the time across winter, and the air most often feels dry.
Winter is Karratha's best season of the year to visit on our travel score. For the whole year in context, see Karratha's year-round climate.
- Avg daytime high
- 24°C
- coldest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 46 mm
- 5 wet days
- Avg wind
- 19 km/h
- Travel score
- 9.2
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Karratha in Winter
Across winter, daytime highs hold fairly steady around 24°C.
A typical winter day in Karratha reaches about 24°C and drops to 19°C overnight. The warmest of the three months is August, the coolest July.
How winter really feels in Karratha
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Karratha weather by month
How the three winter months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 32° / 27° | 45 | 3.9 | 13.1 | 5.0 |
| Feb | 32° / 28° | 81 | 4.9 | 12.7 | 4.8 |
| Mar | 32° / 28° | 68 | 3.4 | 12.1 | 4.8 |
| Apr | 31° / 26° | 25 | 1.7 | 11.5 | 5.8 |
| May | 28° / 22° | 25 | 2.6 | 11 | 7.8 |
| Jun | 25° / 19° | 31 | 2.7 | 10.8 | 8.7 |
| Jul | 24° / 18° | 12 | 1.3 | 10.9 | 9.3 |
| Aug | 25° / 19° | 3 | 0.5 | 11.3 | 9.5 |
| Sep | 27° / 20° | 2 | 0.2 | 11.9 | 9.1 |
| Oct | 29° / 23° | 1 | 0.2 | 12.5 | 7.7 |
| Nov | 30° / 25° | 1 | 0.2 | 13 | 6.8 |
| Dec | 31° / 26° | 20 | 1.2 | 13.2 | 5.8 |
Cloud cover in Winter
The sky is clear or mostly clear about 82% of the time across winter.
Chance of precipitation in Winter
Karratha gets around 46 mm of rain over 5 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 19 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 48 min in early June to 11 h 36 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 4.8 kWh/m².
Hazard calendar for Karratha
None of Karratha's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Karratha sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is winter a good time to visit Karratha?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is one of the better times to visit Karratha for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Karratha in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Karratha sees daytime highs around 24°C and nights near 19°C. Worth packing: light clothes and sun protection. About 5 days see rain.
Sea temperature near Karratha in Winter
The nearest coast averages about 23°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 13 km away) is warmest in March at about 30°C and coldest in August near 23°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 29 | 30 | 30 | 29 | 27 | 24 | 23 | 23 | 24 | 25 | 27 | 28 |
| Comfort | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Refreshing | Refreshing | Refreshing | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 29 | Tropical |
| Feb | 30 | Tropical |
| Mar | 30 | Tropical |
| Apr | 29 | Tropical |
| May | 27 | Warm |
| Jun | 24 | Warm |
| Jul | 23 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 24 | Refreshing |
| Oct | 25 | Warm |
| Nov | 27 | Warm |
| Dec | 28 | Warm |
UV index in Karratha in Winter
Clear-sky midday UV across winter averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Karratha peaks around December 23 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 7 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 15 | 14 | 13 | 10 | 8 | 7 | 7 | 8 | 10 | 12 | 13 | 15 |
| Level | Extreme | Extreme | Extreme | Very high | Very high | High | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 13 | Extreme |
| Apr | 10 | Very high |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 7 | Very high |
| Aug | 8 | Very high |
| Sep | 10 | Extreme |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 15 | Extreme |
Air quality in Karratha in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Karratha is worst in December — around 49 µg/m³ PM2.5 (poor), about 7.0× the cleanest month (July, 7 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 43 | 31 | 23 | 11 | 9 | 8 | 7 | 7 | 11 | 20 | 32 | 49 |
| Level | Poor | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 43 | Poor |
| Feb | 31 | Moderate |
| Mar | 23 | Moderate |
| Apr | 11 | Good |
| May | 9 | Good |
| Jun | 8 | Good |
| Jul | 7 | Good |
| Aug | 7 | Good |
| Sep | 11 | Good |
| Oct | 20 | Moderate |
| Nov | 32 | Moderate |
| Dec | 49 | Poor |
Where is Karratha?
Karratha sits at 20.7°S, 116.8°E, 20 m above sea level, in Australia. The nearest listed city is Port Hedland, 190 km away.
Topography around Karratha
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Karratha.
Within 3 km, the terrain around Karratha has only modest variations in elevation — a maximum elevation change of 123 m around an average of 23 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 170 m; within 80 km, significant variations in elevation — a maximum elevation change of 377 m.
The land around Karratha is covered by grassland (54%) within 3 km, grassland (51%) and water (31%) within 16 km, and grassland (48%) and water (44%) within 80 km.
Australia travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type I
- 230 V · 50 Hz
- Prices
- ≈ 90% of US
- price level, 2025
- GDP per capita
- $65,130
- 2025
- Happiness
- 6.9 / 10
- World Happiness, 2025
- Homicide rate
- 0.9
- per 100k, 2023
- Road deaths
- 4.9
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Karratha (-20.7376°, 116.8463°, elevation 20 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.