April weather forecast
Karratha, Australia

April, like March, is another tropical autumn month in Karratha, Australia, with an average temperature varying between 27.3°C (81.1°F) and 32.8°C (91°F).

Temperature

April denotes a minimal variation in the average high-temperature to a still hot 32.8°C (91°F) from March's 34.2°C (93.6°F). Throughout the month of April, Karratha witnesses an average low-temperature of 27.3°C (81.1°F).

Heat index

April's mean heat index is estimated at a fiery hot 36°C (96.8°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are extremely significant for babies and toddlers. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When relative humidity is on the rise, it curtails evaporation, thereby reducing the heat elimination from the body and causing the feeling of being excessively hot. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

In April, the average relative humidity in Karratha is 50%.

Rainfall

In Karratha, Australia, during April, the rain falls for 5.3 days and regularly aggregates up to 9mm (0.35") of precipitation. Throughout the year, in Karratha, there are 43.5 rainfall days, and 203mm (7.99") of precipitation is accumulated.

Daylight

The average length of the day in April is 11h and 37min.
On the first day of the month, sunrise is at 6:19 am and sunset at 6:12 pm. On the last day of April, in Karratha, sunrise is at 6:29 am and sunset at 5:50 pm AWST.

Sunshine

The average sunshine in April is 8.5h.

UV index

The average daily maximum UV index in April in Karratha is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 7 in April translates into the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.