Karratha in May
May is right in the heart of autumn for Karratha, and the weather has a definite personality this time of year.
Daytime highs average 31.5 degrees, dropping to 20.1 degrees overnight. That's a 11-degree swing between day and night. The warmth sticks around even after dark.
At 31.5 degrees, May sits 2.5 degrees below the annual average of 34.0 degrees.
You're looking at 7mm of rain across 1 days in a typical May. That's barely a sprinkle.
Sunshine-wise, May delivers around 17.7 MJ/m2 of daily solar radiation. UV sits in the very high category. You'll want SPF 50+ and a decent hat.
At 5.6/10 on the Comfort Score, May is middle of the road.
Packing tip: bring loose cotton or linen gear, and SPF 50+ sunscreen and a hat.
Check the data table below for the full picture, or compare Karratha in May with another destination.
May at a Glance
Temperature Range
Daily temperature range in May. The bar shows the typical spread between overnight lows and afternoon highs.
What to Pack
- Cotton or linen fabrics to stay cool
- Sunscreen (SPF 30+) and sunglasses for UV protection
Coming From Overseas?
How May in Karratha stacks up against major cities around the world.
About 14 degrees warmer and considerably drier.
About 8 degrees warmer and considerably drier.
About 8 degrees warmer and considerably drier.
How May Compares
Karratha's monthly climate at a glance. May is highlighted.
| Month | Max | Min | Rain | Comfort |
|---|---|---|---|---|
| Jan | 37.3 | 26.6 | 0mm | 1.0 |
| Feb | 38.8 | 27.4 | 6mm | 1.0 |
| Mar | 36.1 | 26.8 | 20mm | 2.1 |
| Apr | 34.0 | 23.1 | 61mm | 3.7 |
| May | 31.5 | 20.1 | 7mm | 5.6 |
| Jun | 27.1 | 16.7 | 28mm | 8.3 |
| Jul | 27.6 | 15.7 | 0mm | 8.4 |
| Aug | 29.8 | 17.4 | 13mm | 6.9 |
| Sep | 32.7 | 22.1 | 33mm | 5.0 |
| Oct | 36.6 | 23.8 | 0mm | 1.9 |
| Nov | 38.2 | 26.9 | 3mm | 1.0 |
| Dec | 38.7 | 27.8 | 10mm | 1.0 |