Shellharbour Temperature by Month
Shellharbour in New South Wales, Australia sees moderate seasonal temperature shifts, with daytime highs between 16°C (61°F) in July and 25°C (77°F) in January, averaging 21°C (70°F) annually. Explore the full monthly breakdown below.
Shellharbour Monthly Temperatures
In Shellharbour, seasonal changes bring about a moderate variation in temperatures. Nighttime lows range from 19°C (66°F) in January to 10°C (50°F) in July.
The chart below illustrates the average maximum day and minimum night temperatures in Shellharbour by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest.
The chart below shows the average temperature throughout the year:
Temperature: Shellharbour vs Australia
The map below shows the annual temperature across Australia. You can also select individual months if you want to compare a specific time of year.
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Shellharbour vs World: Temperature Compared
Shellharbour's average annual maximum temperature is 21°C (70°F). To put that in context, here's how it compares to a few well-known destinations:
Barcelona, Spain has an annual average of around 21°C (70°F), with warm summers and mild, fairly short winters.
Interlaken, Switzerland averages 8°C (46°F) a year, with cold winters and cool summers thanks to its Alpine setting.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Melbourne, Australia averages 20°C (68°F) annually — known for unpredictable weather, with four seasons sometimes happening in one day.
What Does the Temperature Feel Like in Shellharbour?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In Shellharbour, July is the coolest month, with average highs of 16°C (61°F) and humidity around 53% — considered moderate. In January, the warmest month, temperatures average 25°C (77°F) with 57% humidity — conditions that feel moderate. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Shellharbour's weather — including monthly rainfall, sunshine hours, and humidity — visit our Shellharbour climate page.
