Mt Gambier Weather: 7-Day Forecast, Hourly & Climate Info

If you’ve got plans in Mount Gambier this week, you’ll want to know whether to pack an umbrella or leave it behind. The city sits in South Australia’s Lower South East, where the weather can shift between sunshine and showery spells within hours, and the official BOM forecast shows partly cloudy conditions with highs reaching the high 20s°C and northerly winds at 15 to 25 km/h.

Today’s Conditions: Partly cloudy · Expected High: High 20s°C · Winds: Northerly 15 to 25 km/h · Forecast Source: Bureau of Meteorology

This table summarizes key details from the primary official source for Mount Gambier weather.

What is the coldest month in Mount Gambier?

Understanding Mount Gambier’s seasonal extremes helps travelers decide when to visit. While the current week shows cool overnight temperatures, the city experiences its coldest conditions during the winter months, typically June through August.

Winter temperature averages

Winter nights in Mount Gambier regularly drop below 5°C, with July and August seeing average minimums around 4–6°C. Frost is common in low-lying areas surrounding the city, particularly during calm, clear nights when radiative cooling is strongest. Daytime highs during winter average 13–15°C, meaning visitors should pack warm layers even on sunny winter days.

Historical lows from BOM data

The Bureau of Meteorology’s historical record for Mount Gambier shows that temperatures have dipped below freezing on select winter mornings, though such events are infrequent and short-lived. The city’s coastal proximity moderates extremes compared to inland areas of South Australia, preventing the severe cold seen in higher-altitude regions. The verified forecast for Thursday shows a minimum of 5°C (Bureau of Meteorology), illustrating that even late autumn can bring nippy overnight conditions.

How hot is it in Mount Gambier?

Mount Gambier’s summers bring genuinely warm conditions, though the city rarely experiences the extreme heat that grips South Australia’s interior. For visitors planning outdoor activities, understanding summer peaks helps with scheduling and hydration.

Summer highs

January and February typically deliver the warmest conditions, with maximum temperatures averaging 25–28°C. Heatwaves can push readings above 35°C for short periods, particularly when northerly winds draw hot air from the outback. However, sea breezes from the Southern Ocean often provide relief during afternoon hours, especially near the city center. The current forecast period shows highs ranging from 16°C (Monday) to 20°C (Saturday), reflecting late autumn conditions rather than summer extremes.

Annual temperature range

Across a full year, Mount Gambier typically records minimums between 4–12°C and maximums between 13–28°C. The verified forecast data shows this week’s range spans 5°C to 20°C (Bureau of Meteorology), sitting comfortably within the expected seasonal band. UV Index values of 8 (Very High) (Bureau of Meteorology) during this forecast period indicate sun protection is essential year-round, not just in summer.

Mt Gambier Weather 7 Day Forecast

The Bureau of Meteorology issues official forecasts for Mount Gambier under product ID S11004, providing daily precis and detailed 3-hourly breakdowns. Here is the current seven-day outlook based on the most recent BOM release.

Day-by-day outlook

This table presents the official BOM day-by-day forecast for Mount Gambier.

The rain probability rises steadily from a slim 10% on Thursday to an 80% chance by Sunday, according to the Bureau of Meteorology’s official forecast. Sunday could deliver 1–8 mm of rainfall if current models hold, making it the wettest day of the current forecast window.

BOM detailed forecast

Beyond the daily precis, the BOM detailed forecast page offers 3-hourly temperature, wind, and precipitation breakdowns. This granularity is particularly useful for planning specific activities like hiking in the Blue Lake region or visiting the Mount Gambier Botanic Garden. The Bureau of Meteorology’s detailed forecast also confirms no active weather warnings for South Australia, meaning there are no immediate severe weather threats.

Mount Gambier weather tomorrow

For short-notice planning, Weatherzone’s next-48-hours page provides specific hourly projections. At 3:30 AM on Monday, Weatherzone recorded 11.9°C with 94% humidity under mostly cloudy skies and just a 9% chance of rain (Weatherzone). By 6:30 AM that same day, the temperature had dropped to 11.1°C with a 5% rain probability. These granular readings help morning commuters and early risers decide on clothing and travel timing.

Mt gambier weather hourly

AccuWeather’s current-hour reading shows 71°F (approximately 22°C) with a RealFeel of 70°F under hazy sunshine and just 4% precipitation chance (AccuWeather). The 9 AM forecast places RealFeel Shade at 54°F with 92% cloud cover and 87% humidity, illustrating how cloud and humidity dramatically affect how warm it actually feels. By 6 PM, cloud cover drops to 39%, providing a notably clearer sky for evening activities.

Mount Gambier Extended Forecasts

Beyond the BOM seven-day outlook, several secondary sources provide extended forecasts that can help with longer-term planning. These services aggregate model data and present it with varying degrees of reliability.

10 and 14 day outlooks

Secondary providers like AccuWeather and The Weather Chaser offer forecasts extending beyond the BOM seven-day window. AccuWeather’s extended data includes RealFeel Shade temperatures and hourly breakdowns that complement the official daily precis. The AccuWeather hourly forecast page shows current RealFeel temperatures and cloud cover percentages, useful for understanding how the air will actually feel outside the standard high/low range. The Weather Chaser also provides 7-day hourly predictions for Mount Gambier Town (The Weather Chaser).

Mt Gambier Weather Radar and Hourly

For those needing real-time or near-real-time data, radar imagery and hourly forecasts offer a more granular view than daily summaries. These tools are especially valuable during rapidly changing weather or when monitoring approaching cold fronts.

Hourly temperature updates

AccuWeather provides granular hourly temperature data including RealFeel readings that account for humidity and cloud cover. At 9 AM, the RealFeel Shade was 54°F with 87% humidity and 92% cloud cover, demonstrating how overcast conditions can make temperatures feel noticeably cooler than the actual reading. By 6 PM, conditions shift to 39% cloud cover with 76% humidity, offering a clearer evening sky for outdoor activities.

Live radar from BOM

The Bureau of Meteorology operates a dedicated radar and observation station for the Lower South East region, accessible via the Bureau of Meteorology’s Mount Gambier location page. This page provides both current radar imagery and a text-based hourly table showing past observations and short-range forecasts. The radar is particularly useful for identifying approaching rain bands that could affect plans in the next few hours. Weatherzone also confirms no fire danger rating currently listed for Mount Gambier (Weatherzone), meaning fire weather concerns are minimal for now.

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