December weather forecast
Exmouth, Australia

At an average high of 32.6°C (90.7°F) in December, Exmouth greets the peak summer heat, connoting the arrival of longer days, lively tourists and warm ocean currents. This month holds the record for the second warmest month of the city's year. The year concludes with an amplification in both the amount of rainfall and significant daylight hours as the city moves into the new year.

Temperature

As November transitions into December, the average high-temperature in Exmouth rests at a still hot 32.6°C (90.7°F), maintaining a close resemblance to the previous month. Exmouth experiences an average low-temperature reading of 24.5°C (76.1°F) throughout December.

Heat index

December's mean heat index is computed to be a very hot 37°C (98.6°F). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure of how hot it feels when the actual air humidity is factored in. This effect tends to be personal, with the weather perception differing among individuals due to variations in body mass, height, and exertion. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

The average relative humidity in December in Exmouth is 56%.

Rainfall

In Exmouth, in December, it is raining for 3.5 days, with typically 15mm (0.59") of accumulated precipitation. In Exmouth, Australia, during the entire year, the rain falls for 43.8 days and collects up to 141mm (5.55") of precipitation.

Sea temperature

In Exmouth, in December, the average water temperature is 26°C (78.8°F).
Note: For swimming, diving, and enjoying other water activities, the range of 25°C (77°F) to 29°C (84.2°F) in water temperature is considered ideal, offering pleasure for extended periods without discomfort.

Daylight

December has the longest days of the year, with an average of 13h and 24min of daylight.
On the first day of the month, sunrise is at 5:31 am and sunset at 6:53 pm. On the last day of December, sunrise is at 5:43 am and sunset at 7:10 pm AWST.

Sunshine

In Exmouth, the average sunshine in December is 11.9h.

UV index

The average daily maximum UV index in December in Exmouth is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index, 7 in December, converts into the following recommendations:
Fend off overexposure. Sun protection is vital. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Stay cautious! Sand and water reflections increase UV radiation potency.