May weather forecastKarratha, Australia
May
Weather in May
May, the last month of the autumn in Karratha, is another warm month, with an average temperature ranging between max 28.8°C (83.8°F) and min 23.4°C (74.1°F).Temperature
As April shifts into May, a minor alteration in temperatures is observed, with average highs reducing from a hot 32.8°C (91°F) to a warm 28.8°C (83.8°F). During May, the average low-temperature is 23.4°C (74.1°F).Heat index
For most parts of May, the heat index is estimated at 29°C (84.2°F). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.Factoring in the heat index, values are geared towards shaded areas with light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
In May, the average relative humidity is 47%.Rainfall
In Karratha, in May, it is raining for 4.1 days, with typically 13mm (0.51") of accumulated precipitation. In Karratha, during the entire year, the rain falls for 43.5 days and collects up to 203mm (7.99") of precipitation.Daylight
In Karratha, the average length of the day in May is 11h and 8min.On the first day of the month, sunrise is at 6:29 am and sunset at 5:49 pm. On the last day of May, sunrise is at 6:41 am and sunset at 5:39 pm AWST.
Sunshine
In May, the average sunshine is 7.3h.UV index
May through August, with an average maximum UV index of 6, are months with the lowest UV index in Karratha. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 6 during May leads to these instructions:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Karratha, Australia
- Average high temperature in May: 28.8°C
The warmest month (with the highest average high temperature) is March (34.2°C).
The month with the lowest average high temperature is July (25.7°C).
- Average low temperature in May: 23.4°C
The month with the highest average low temperature is March (28.9°C).
The coldest month (with the lowest average low temperature) is July (19.8°C).
Average pressure in May
Karratha, Australia
- Average pressure in May: 1014.7mbar
The month with the highest atmospheric pressure is July (1016.9mbar).
The month with the lowest atmospheric pressure is January (1005mbar).
Average wind speed in May
Karratha, Australia
- Average wind speed in May: 19.6km/h
The windiest month (with the highest average wind speed) is November (21.8km/h).
The calmest month (with the lowest average wind speed) is April (17.1km/h).
Average humidity in May
Karratha, Australia
- Average humidity in May: 47%
The month with the highest relative humidity is January (62%).
The months with the lowest relative humidity are July, August, September and October (46%).
Average rainfall in May
Karratha, Australia
- Average rainfall in May: 13mm
The wettest month (with the highest rainfall) is February (67mm).
The driest months (with the least rainfall) are August, September and October (1mm).
Average rainfall days in May
Karratha, Australia
- Average rainfall days in May: 4.1 days
The month with the highest number of rainy days is January (9.3 days).
The month with the least rainy days is October (0.5 days).
Average daylight in May /
Average sunshine in May
Karratha, Australia
- Average daylight in May: 11h and 6min
The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).
- Average sunshine in May: 7h and 18min
The month with the most sunshine is November (Average sunshine: 12h and 18min).
The month with the least sunshine is June (Average sunshine: 7h and 12min).
Average sunshine days in May
Karratha, Australia
- Average sunshine days in May: 26.7 days
The month with the most sunshine days is August (30 days).
The month with the least sunshine days is January (20.5 days).
Average UV index in May
Karratha, Australia
- Average UV index in May: 6
The months with the highest UV index are February, March, October and December (UV index 8).
The months with the lowest UV index are May, June, July and August (UV index 6).
Average cloud cover in May
Karratha, Australia
- Average cloud cover in May: 14
The month with the most cloud cover is January (Cloud cover 19).
The month with the least cloud cover is September (Cloud cover 3).
Average visibility in May
Karratha, Australia
- Average visibility in May: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).





