Climate Insights for Great Keppel Isla

The climate in Great Keppel Isla is warm and mild. The average annual temperature is 23°C and approximately 1064mm of precipitation falls per year. March is the wettest month, receiving around 166mm of rainfall. Great Keppel Isla is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: February, January, March. The coldest months are July, August, June, when temperatures can drop to 18°C.

Great Keppel Isla has relatively stable temperatures year-round, staying within a 9°C range. The warmest month is February, when average highs reach 27°C and the mean temperature sits around 26°C. July is the coolest month, with minimum temperatures around 18°C and an average of 20°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between April and May, with a 2°C shift in average temperatures.

Great Keppel Isla is a moderately rainy area, receiving approximately 1064mm of precipitation annually, which averages out to around 89mm per month. The wettest month is March, averaging 166mm of rainfall. February and January also tend to see above-average precipitation. The driest month is September, with just 21mm. That's 146mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Great Keppel Isla is moderately windy, with an average annual wind speed of 30km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 33km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in August, with average winds dropping to 26km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 7km/h between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 27km/h in winter, 28km/h in spring, 31km/h in summer, 32km/h in autumn.

It is currently autumn in Great Keppel Isla, which began on March 20, 2026. Great Keppel Isla is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in February at around 27°C, while the coldest stretch bottoms out in July near 18°C. Winter is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Great Keppel Isla is during May, June, July, August, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 58mm per month. By contrast, February can be uncomfortably hot with temperatures reaching 27°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Great Keppel Isla based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.