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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Coast Pulse Hub Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Petersham today will follow the pattern shown in the live forecast above, with mild conditions and a chance of a shower typical for Sydney’s inner-west in late autumn.
What is the weather like in Petersham today?
Petersham sits in Sydney’s humid subtropical zone, so expect similar conditions to the city centre but slightly warmer inland. The live forecast above gives the specific temperature range and rain chance.
- Morning cloud often clears to a partly sunny afternoon, especially when a trough is offshore.
- Humidity tends to be moderate, with a sea breeze arriving from Botany Bay by early afternoon.
- Wind speeds are typically light, rarely exceeding 20 km/h, unless a southerly change is moving up the coast.
- For hourly breakdowns, refer to the petersham weather hourly data on the Bureau of Meteorology’s site.
How does Petersham’s weather compare to nearby suburbs?
Being only 6 km south-west of the CBD, Petersham often mirrors sydney weather but with slightly warmer afternoons and less coastal fog.
- Compared to penrith weather, Petersham is cooler and less prone to extreme heat, given its proximity to the coast.
- Manly weather tends to be breezier and more humid, while Petersham stays a degree or two warmer in winter due to the urban heat island effect.
- Radar coverage for petersham weather radar is provided by the Sydney radar at Terrey Hills, useful for tracking approaching showers.
Does Petersham get much rain?
Annual rainfall is around 1,200 mm, spread fairly evenly through the year. Summer thunderstorms can bring heavy falls, while winter is slightly drier but still sees regular light showers.
When is the hottest time of year in Petersham?
January is typically the hottest month, with average maximums near 27°C. Occasional heatwaves can push temperatures above 40°C, though these are less severe than in western suburbs like Penrith.
Is Petersham affected by coastal fog?
Fog is rare in Petersham. It occurs mainly in winter when cold air settles over the city, but the inner‑west often stays clear due to its slightly higher elevation and distance from the ocean.
For broader conditions, visit our Australia weather hub or check Sydney weather for the full metropolitan outlook. If you’re planning a trip west, compare with Penrith weather.