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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Coast Current Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
You should check the live forecast above to see today’s expected conditions, but the main story for Campbelltown is the steady north-easterly breeze that often builds during summer afternoons, making the apparent temperature feel several degrees cooler than the actual air temperature.
What drives the afternoon sea breeze near Campbelltown?
Campbelltown sits roughly 50 kilometres inland from the coast, so on most warm days a sea breeze from the south-east pushes into the region by early afternoon. This breeze can drop the temperature by 3–5°C within an hour and tends to last until dusk. For anyone planning outdoor activities, the weather in campbelltown tomorrow will likely follow a similar pattern if the synoptic setup is stable.
How reliable are the hourly and 10‑day forecasts here?
The campbelltown weather hourly forecasts from the Bureau of Meteorology are most accurate for the next 12 to 18 hours because convective showers or inland thunderstorms can develop quickly. The weather in campbelltown 10 days outlook gives a useful trend – for example, whether a southerly change will arrive on the weekend – but day‑to‑day details beyond day 5 should be treated as a guide only.
Why does Campbelltown feel so much cooler than Penrith on the same summer day?
The east‑south‑east sea breeze reaches Campbelltown earlier and stronger than Penrith because of its position near the valley opening. Penrith is further west and more sheltered, so it often stays 2–4°C hotter.
Is the “apparent temperature” in the live forecast the same as feels‑like?
Yes. The Bureau of Meteorology’s apparent temperature accounts for wind chill, humidity and radiation. On Campbelltown’s breezy afternoons the apparent temperature can be 4–6°C lower than the reading on a standard thermometer.
When is the best time to water the garden during a warm spell?
Early morning, before the sun is high and the sea breeze picks up. Watering in the evening can encourage fungal issues because the humidity often stays elevated after the breeze eases.
Sources
For broader NSW conditions, visit our Australia weather hub or the dedicated Sydney Weather page. If severe storms are possible, check the Severe Weather Warning section.