September weather forecast
Hamilton Island, Australia

The onset of spring in September brings about a pleasant evolution in weather for Hamilton Island. September stands out proudly boasting the least rainfall at 18mm (0.71"). The increased sunshine and daylight hours bring new life to the island’s green cover. The warm sea temperature entices many to relish water-based activities. It's an ideal time to witness the spectacular mix of both terrestrial and marine life.

Temperature

September in Hamilton Island begins with an average high-temperature of a still moderately hot 26°C (78.8°F), reflecting close similarity to the preceding month. During the nights in September, the temperature averages to a refreshing 17°C (62.6°F).

Rainfall

September is the month with the least rainfall. Rain falls for 4 days and accumulates 18mm (0.71") of precipitation.

Sea temperature

In September, the average sea temperature in Hamilton Island, Australia, is 23°C (73.4°F).
Note: Cold sensitivities vary, but with the right amount of sunshine, a gentle breeze, and a warm day, a swim in 23°C (73.4°F) waters might be just right. Remember, Olympic swimmers are used to waters between 25°C (77°F) and 28°C (82.4°F).

Daylight

In Hamilton Island, the average length of the day in September is 11h and 59min.
On the first day of September in Hamilton Island, Australia, sunrise is at 6:12 am and sunset at 5:55 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 6:02 pm AEST.

Sunshine

The average sunshine in September in Hamilton Island, Australia, is 9h.

UV index

In September, the average daily maximum UV index in Hamilton Island is 10. A UV Index estimate of 8 to 10 represents a very high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: A typical high UV index of 10 in September suggests the following recommendations:
Always prioritize safety measures. Rapid harm can befall unprotected skin and eyes. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. For optimal sun protection, use sunscreen of no less than 30 SPF. This not only prevents sunburn but also reduces radiation damage. Be wary! Reflections from sand and water make UV radiation more intense.