Karratha Weather and Climate
Climate Snapshot
Karratha's warmest month in 2024 was February, averaging 38.8 degrees. That gives Karratha an annual average daytime high of 34.0 degrees, 6.5 degrees warmer than the Western Australia mean.
Daytime highs peak at 38.8 degrees in February and bottom out with overnight lows of 15.7 degrees in July. That is a 23.1 degree spread from hottest afternoon to coldest night. Overnight minimums average 22.9 degrees across the year, 5.2 degrees warmer than the Western Australia average of 17.7.
Annual rainfall totals 181mm across 24 rain days, 68 percent drier than the Western Australia average. The wettest month is April at 61mm, and January is the driest at 0mm.
Rainfall varies dramatically through the year. The wettest month (April) gets over 999 times as much rain as the driest (January).
By our reckoning, July (8.4/10) is when the weather is at its finest, while January (1.0/10) is the toughest month to be outdoors.
Scroll down for the full month-by-month breakdown, or jump straight to July if you're picking the best time to visit Karratha.
Monthly Comfort Score
Our Comfort Score rates each month from 1 (tough) to 10 (ideal) based on temperature, humidity, rainfall, UV, and sunshine. How we calculate it
Annual Comfort Score: 3.8/10 - Ranked #199 of 213 Australian cities (national avg 6.2, WA avg 6.0)
Seasonal Overview
| Season | Avg Max °C | Avg Min °C | Total Rain mm | Comfort |
|---|---|---|---|---|
| Summer | 38.3 | 27.3 | 15 | 1.0 |
| Autumn | 33.9 | 23.3 | 88 | 3.8 |
| Winter | 28.2 | 16.6 | 41 | 7.9 |
| Spring | 35.8 | 24.3 | 36 | 2.6 |
Monthly Climate Averages
| Month | Max °C | Min °C | Rain mm | Rain Days | Solar MJ | Humidity % | Comfort |
|---|
Weather by Month
Detailed climate data, packing advice, and what to expect for each month in Karratha.
37.3°C, 0mm rain February
38.8°C, 6mm rain March
36.1°C, 20mm rain April
34.0°C, 61mm rain May
31.5°C, 7mm rain June
27.1°C, 28mm rain July
27.6°C, 0mm rain August
29.8°C, 13mm rain September
32.7°C, 33mm rain October
36.6°C, 0mm rain November
38.2°C, 3mm rain December
38.7°C, 10mm rain
Compare and Explore
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