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January is the hottest month annually in Sydney with the average high temperature hitting 79°F (26°C). The average low temperature is at 66°F (19°C). Meanwhile, it’s the perfect month to head out for beach or lake trips with sea temperatures at 73°F (23°C).
In February, the high and low temperatures stay the same at 79°F (26°C) and 66°F (19°C) respectively.
March is the wettest month on record annually with a precipitation average of 164 mm. The average high temperature decreases to 77°F (25°C) as fall arrives and the average low temperature goes down to 64°F (18°C).
Sydney Weather in April: The climate continues to cool in April with the average high temperature decreasing to 73°F (23°C). The average high temperature also sees numbers decreasing further to 59°F (15°C).
In May, the average high and average low temperatures range between 68°F (20°C) and 54°F (12°C). Additionally, the precipitation rates lower to 101 mm.
June sees the average high temperature decreasing to 64°F (18°C) for the first month of winter in Sydney. Similarly, the average low temperature drops by the same amount to 50°F (10°C).
In July, the average high and the average low temperatures measure in at 63°F (17°C) and 46°F (8°C) respectively making it the coldest month of the year for Sydney. It’s also the driest month annually with just 65 mm of rainfall.
Sydney Weather in August: As the last month of winter, August brings in temperatures just a tad bit warmer than the previous month. High temperature averages come in at 64°F (18°C) while the low temperature average sees a 2-degree increase to 48°F (9°C).
September marks the beginning of spring in Sydney which comes with 65 mm worth of light rain showers. The average high temperature rises to 68°F (20°C) while the average low temperature jumps to 54°F (12°C).
In October, temperatures continue its upward trend with the average high temperature hitting 72°F (22°C). The average low temperature also increases to 57°F (14°C).
November sees a dramatic increase in rainfall with precipitation averages jumping to 116 mm. Meanwhile, there are small shifts upward in temperatures with the average high and average low temperatures measuring in at 75°F (24°C) and 61°F (16°C) respectively.
Sydney Weather in December: It’s a beautiful sunny start to Sydney’s summer in December with 9 hours of daily sunshine – the highest for the year. The average low temperature and average high temperatures range between 64°F (18°C) and 79°F (26°C).
Generally, the best times of the year to visit Sydney are between September and November as well as March through May. During these months, the tourist crowds are a bit more manageable. As the shoulder seasons, these months also have some great deals on airfare and accommodations. Adventure seekers will have a great time in March through May as winter approaches. The cooler temperatures make outdoor activities much more bearable and the city is also a little less occupied.