Karratha weather in January
In January, Karratha sees average daytime highs of 32°C and overnight lows near 27°C, with 45 mm of rain across 3.9 wet days and about 13.1 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.
Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 72% of the time in January, and the air most often feels oppressive.
Daylight stretches from about 13 h 12 min at the start of January to 12 h 54 min by month's end. Set against the rest of the year, January is Karratha's 9th-clearest and 4th-windiest month. For the whole year in context, see Karratha's year-round climate.
- Daytime high
- 32°
- 2nd warmest
- Overnight low
- 27°
- 10th coldest
- Rainfall
- 45 mm
- 3.9 wet days
- Daylight
- 13 h 06 min
- 5:48 AM – 6:56 PM
- Cloud cover
- 31%
- 9th clearest
- Wind
- 20 km/h
- 4th windiest
- Solar energy
- 7.64 kWh/m²
- Travel score
- 5.0
- out of 10
Karratha is town in Western Australia.
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 32°C through the month.
A typical January day in Karratha reaches about 32°C in the afternoon and slips back to 27°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 35°C. Set against its neighbours, January runs on par with December and on par with February.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Avg low (°C) | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 32 | 27 |
| 2 | 32 | 27 |
| 3 | 32 | 27 |
| 4 | 32 | 27 |
| 5 | 32 | 27 |
| 6 | 32 | 27 |
| 7 | 32 | 27 |
| 8 | 32 | 27 |
| 9 | 32 | 27 |
| 10 | 32 | 27 |
| 11 | 32 | 27 |
| 12 | 32 | 27 |
| 13 | 32 | 28 |
| 14 | 32 | 28 |
| 15 | 32 | 28 |
| 16 | 32 | 28 |
| 17 | 32 | 28 |
| 18 | 32 | 28 |
| 19 | 32 | 28 |
| 20 | 32 | 28 |
| 21 | 32 | 28 |
| 22 | 32 | 28 |
| 23 | 32 | 28 |
| 24 | 32 | 28 |
| 25 | 32 | 27 |
| 26 | 32 | 27 |
| 27 | 32 | 27 |
| 28 | 32 | 27 |
| 29 | 32 | 27 |
| 30 | 32 | 27 |
| 31 | 32 | 27 |
How January really feels in Karratha
Once humidity and wind are folded in, January averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Karratha weather by month
How January compares with the rest of the year at a glance. January is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.
| 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 January
The sky is clear or mostly clear about 72% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 7% of January, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to cloud over as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 87 | 87 | 86 | 86 | 85 | 85 | 85 | 84 | 84 | 83 | 83 | 81 | 81 | 80 | 79 | 78 | 77 | 76 | 75 | 74 | 73 | 73 | 73 | 73 | 72 | 72 | 72 | 72 | 71 | 71 | 71 |
| Cloudier (%) | 13 | 13 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 17 | 17 | 19 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 29 | 29 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 87 | 13 |
| 2 | 87 | 13 |
| 3 | 86 | 14 |
| 4 | 86 | 14 |
| 5 | 85 | 15 |
| 6 | 85 | 15 |
| 7 | 85 | 15 |
| 8 | 84 | 16 |
| 9 | 84 | 16 |
| 10 | 83 | 17 |
| 11 | 83 | 17 |
| 12 | 81 | 19 |
| 13 | 81 | 19 |
| 14 | 80 | 20 |
| 15 | 79 | 21 |
| 16 | 78 | 22 |
| 17 | 77 | 23 |
| 18 | 76 | 24 |
| 19 | 75 | 25 |
| 20 | 74 | 26 |
| 21 | 73 | 27 |
| 22 | 73 | 27 |
| 23 | 73 | 27 |
| 24 | 73 | 27 |
| 25 | 72 | 28 |
| 26 | 72 | 28 |
| 27 | 72 | 28 |
| 28 | 72 | 28 |
| 29 | 71 | 29 |
| 30 | 71 | 29 |
| 31 | 71 | 29 |
Chance of precipitation in January
Karratha gets around 45 mm of rain over 3.9 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 12% and peaks near 16% on the wettest days. The odds climb toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 |
| Rain chance (%) | |
|---|---|
| 1 | 7 |
| 2 | 7 |
| 3 | 8 |
| 4 | 8 |
| 5 | 9 |
| 6 | 9 |
| 7 | 9 |
| 8 | 9 |
| 9 | 10 |
| 10 | 10 |
| 11 | 10 |
| 12 | 10 |
| 13 | 11 |
| 14 | 11 |
| 15 | 11 |
| 16 | 12 |
| 17 | 12 |
| 18 | 13 |
| 19 | 13 |
| 20 | 14 |
| 21 | 14 |
| 22 | 14 |
| 23 | 15 |
| 24 | 15 |
| 25 | 15 |
| 26 | 15 |
| 27 | 15 |
| 28 | 15 |
| 29 | 16 |
| 30 | 16 |
| 31 | 16 |
Humidity in January
Most of January feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the oppressive band about 43% of days. Sticky, muggy-or-worse air turns up on roughly 95% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Comfortable (%) | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Humid (%) | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 2 |
| Muggy (%) | 21 | 20 | 19 | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 |
| Oppressive (%) | 47 | 47 | 48 | 49 | 49 | 49 | 49 | 48 | 48 | 47 | 46 | 45 | 43 | 42 | 41 | 40 | 39 | 38 | 38 | 38 | 38 | 38 | 38 | 39 | 39 | 40 | 41 | 41 | 42 | 43 | 43 |
| Miserable (%) | 25 | 26 | 27 | 28 | 28 | 29 | 30 | 32 | 33 | 34 | 36 | 37 | 39 | 40 | 41 | 42 | 43 | 44 | 44 | 44 | 44 | 44 | 44 | 44 | 43 | 43 | 42 | 42 | 41 | 41 | 41 |
| Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|
| 1 | 2 | 6 | 21 | 47 | 25 |
| 2 | 2 | 6 | 20 | 47 | 26 |
| 3 | 1 | 6 | 19 | 48 | 27 |
| 4 | 1 | 5 | 17 | 49 | 28 |
| 5 | 1 | 5 | 16 | 49 | 28 |
| 6 | 1 | 5 | 16 | 49 | 29 |
| 7 | 1 | 5 | 15 | 49 | 30 |
| 8 | 1 | 5 | 14 | 48 | 32 |
| 9 | 1 | 5 | 14 | 48 | 33 |
| 10 | 0 | 5 | 14 | 47 | 34 |
| 11 | 0 | 5 | 13 | 46 | 36 |
| 12 | 0 | 5 | 13 | 45 | 37 |
| 13 | 0 | 5 | 13 | 43 | 39 |
| 14 | 0 | 5 | 13 | 42 | 40 |
| 15 | 0 | 5 | 13 | 41 | 41 |
| 16 | 0 | 5 | 13 | 40 | 42 |
| 17 | 0 | 5 | 13 | 39 | 43 |
| 18 | 0 | 5 | 14 | 38 | 44 |
| 19 | 0 | 5 | 14 | 38 | 44 |
| 20 | 0 | 4 | 14 | 38 | 44 |
| 21 | 0 | 4 | 14 | 38 | 44 |
| 22 | 0 | 4 | 14 | 38 | 44 |
| 23 | 0 | 4 | 14 | 38 | 44 |
| 24 | 0 | 4 | 14 | 39 | 44 |
| 25 | 0 | 4 | 14 | 39 | 43 |
| 26 | 0 | 3 | 14 | 40 | 43 |
| 27 | 0 | 3 | 14 | 41 | 42 |
| 28 | 0 | 3 | 14 | 41 | 42 |
| 29 | 0 | 3 | 14 | 42 | 41 |
| 30 | 0 | 3 | 14 | 43 | 41 |
| 31 | 0 | 2 | 13 | 43 | 41 |
Wind in January
Winds average 20 km/h in January.
Across January, daily wind ranges from about 20 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Feels | breezy | breezy | breezy | breezy | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy | breezy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 20 | breezy |
| 2 | 20 | breezy |
| 3 | 20 | breezy |
| 4 | 20 | breezy |
| 5 | 20 | light breeze |
| 6 | 20 | light breeze |
| 7 | 20 | light breeze |
| 8 | 20 | light breeze |
| 9 | 20 | light breeze |
| 10 | 20 | light breeze |
| 11 | 20 | light breeze |
| 12 | 20 | light breeze |
| 13 | 20 | light breeze |
| 14 | 20 | light breeze |
| 15 | 20 | light breeze |
| 16 | 20 | light breeze |
| 17 | 20 | light breeze |
| 18 | 20 | light breeze |
| 19 | 20 | breezy |
| 20 | 20 | breezy |
| 21 | 20 | breezy |
| 22 | 20 | breezy |
| 23 | 20 | breezy |
| 24 | 20 | breezy |
| 25 | 20 | breezy |
| 26 | 20 | breezy |
| 27 | 20 | breezy |
| 28 | 20 | breezy |
| 29 | 20 | breezy |
| 30 | 20 | breezy |
| 31 | 20 | breezy |
Sunrise & sunset in January
Daylight runs from about 13 h 12 min at the start of January to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 18 minutes over January. Sunrise moves from 5:39 AM to 5:58 AM, and sunset from 6:53 PM to 6:54 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.2 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.1 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.9 |
| Sunrise (AM) | 5:39 | 5:39 | 5:40 | 5:40 | 5:41 | 5:42 | 5:42 | 5:43 | 5:43 | 5:44 | 5:45 | 5:45 | 5:46 | 5:47 | 5:47 | 5:48 | 5:49 | 5:49 | 5:50 | 5:51 | 5:51 | 5:52 | 5:52 | 5:53 | 5:54 | 5:54 | 5:55 | 5:56 | 5:56 | 5:57 | 5:58 |
| Sunset (PM) | 6:53 | 6:53 | 6:54 | 6:54 | 6:54 | 6:54 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:56 | 6:55 | 6:55 | 6:55 | 6:55 | 6:55 | 6:54 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.2 | 5:39 | 6:53 |
| 2 | 13.2 | 5:39 | 6:53 |
| 3 | 13.2 | 5:40 | 6:54 |
| 4 | 13.2 | 5:40 | 6:54 |
| 5 | 13.2 | 5:41 | 6:54 |
| 6 | 13.2 | 5:42 | 6:54 |
| 7 | 13.2 | 5:42 | 6:55 |
| 8 | 13.2 | 5:43 | 6:55 |
| 9 | 13.2 | 5:43 | 6:55 |
| 10 | 13.2 | 5:44 | 6:55 |
| 11 | 13.2 | 5:45 | 6:55 |
| 12 | 13.2 | 5:45 | 6:55 |
| 13 | 13.2 | 5:46 | 6:56 |
| 14 | 13.2 | 5:47 | 6:56 |
| 15 | 13.1 | 5:47 | 6:56 |
| 16 | 13.1 | 5:48 | 6:56 |
| 17 | 13.1 | 5:49 | 6:56 |
| 18 | 13.1 | 5:49 | 6:56 |
| 19 | 13.1 | 5:50 | 6:56 |
| 20 | 13.1 | 5:51 | 6:56 |
| 21 | 13.1 | 5:51 | 6:56 |
| 22 | 13.1 | 5:52 | 6:56 |
| 23 | 13.1 | 5:52 | 6:56 |
| 24 | 13.0 | 5:53 | 6:56 |
| 25 | 13.0 | 5:54 | 6:56 |
| 26 | 13.0 | 5:54 | 6:55 |
| 27 | 13.0 | 5:55 | 6:55 |
| 28 | 13.0 | 5:56 | 6:55 |
| 29 | 13.0 | 5:56 | 6:55 |
| 30 | 13.0 | 5:57 | 6:55 |
| 31 | 12.9 | 5:58 | 6:54 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 7.64 kWh/m².
For context, solar energy here swings from a low near 4.19 kWh/m² to a high of 8.16 kWh/m² in November across the year — January's 7.64 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 8.0 | 8.0 | 8.0 | 7.9 | 7.9 | 7.9 | 7.9 | 7.8 | 7.8 | 7.8 | 7.8 | 7.7 | 7.7 | 7.7 | 7.6 | 7.6 | 7.6 | 7.5 | 7.5 | 7.5 | 7.5 | 7.4 | 7.4 | 7.4 | 7.4 | 7.3 | 7.3 | 7.3 | 7.3 | 7.3 | 7.3 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 8.0 | Intense |
| 2 | 8.0 | Intense |
| 3 | 8.0 | Intense |
| 4 | 7.9 | Intense |
| 5 | 7.9 | Intense |
| 6 | 7.9 | Intense |
| 7 | 7.9 | Intense |
| 8 | 7.8 | Intense |
| 9 | 7.8 | Intense |
| 10 | 7.8 | Intense |
| 11 | 7.8 | Intense |
| 12 | 7.7 | Intense |
| 13 | 7.7 | Intense |
| 14 | 7.7 | Intense |
| 15 | 7.6 | Intense |
| 16 | 7.6 | Intense |
| 17 | 7.6 | Intense |
| 18 | 7.5 | Intense |
| 19 | 7.5 | Intense |
| 20 | 7.5 | Intense |
| 21 | 7.5 | Intense |
| 22 | 7.4 | Intense |
| 23 | 7.4 | Intense |
| 24 | 7.4 | Intense |
| 25 | 7.4 | Intense |
| 26 | 7.3 | Intense |
| 27 | 7.3 | Intense |
| 28 | 7.3 | Intense |
| 29 | 7.3 | Intense |
| 30 | 7.3 | Intense |
| 31 | 7.3 | Intense |
Hazard calendar for Karratha
In January, Karratha sits inside its cyclone season. The full year is below, with each hazard's peak months called out.
Karratha sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is January a good time to visit Karratha?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit Karratha for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Karratha in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Karratha sees daytime highs around 32°C and nights near 27°C. Pack light clothes and sun protection. Worth having: a windbreaker. About 4 days see rain.
Sea temperature near Karratha in January
The nearest coast averages about 29°C in January — 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 January
Clear-sky midday UV in January peaks around 15 (very high — sun protection essential). 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 January
Average fine-particle pollution (PM2.5) through the year — so you can see where January 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).