December weather forecast
Port Hedland, Australia

December, the first month of the summer in Port Hedland, is a torrid month, with an average temperature ranging between max 35.3°C (95.5°F) and min 28.3°C (82.9°F).

Temperature

Port Hedland experiences a transition to a sweltering 35.3°C (95.5°F) in average high-temperatures with the arrival of December, not greatly differing from November's 34.9°C (94.8°F). Throughout the month of December, Port Hedland reports a steady low-temperature average of 28.3°C (82.9°F).

Heat index

December's average heat index is estimated at a blistering 43°C (109.4°F). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical 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 critical to babies and toddlers. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Port Hedland, the average relative humidity in December is 54%.

Rainfall

In December, in Port Hedland, Australia, the rain falls for 6.2 days. Throughout December, 18mm (0.71") of precipitation is accumulated. Throughout the year, there are 51.3 rainfall days, and 264mm (10.39") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature in Port Hedland is 28.4°C (83.1°F).
Note: For activities such as swimming and diving, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

The month with the longest days is December, with an average of 13h and 18min of daylight.
On the first day of the month, sunrise is at 5:16 am and sunset at 6:32 pm. On the last day of December, sunrise is at 5:28 am and sunset at 6:49 pm AWST.

Sunshine

The average sunshine in December in Port Hedland is 11.9h.

UV index

The months with the highest UV index in Port Hedland are January through March, October through December, with an average maximum UV index of 8. A UV Index estimate of 8 to 10 represents a very high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In December, an average UV index of 8 transforms into the following instructions:
Always be cautious. Skin and eyes can be affected swiftly without protection. 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. Watch out! Reflections from sand and water can surge UV radiation exposure.