Sydney weather by month

Sydney is in the southern hemisphere, so the seasons are the reverse of the northern hemisphere's. Summer is December to February, winter June to August. Rain falls all year, more often from late summer into autumn, and winter spells can be long and wet too. From late spring through summer, hot dry winds from the interior can make midday heat jump, and UV is very strong. Winters are far milder than in northern Europe or the US Midwest, though mornings and evenings are cool. Bushfires mainly threaten spring and summer, so check fire alerts if you visit then.

Weighing daytime warmth against rain days, September to November came out as the easiest months. August and September was the quiet stretch with 7 rain days, against 12 in March.