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Mount Gambier climate
Typical historical weather for Mount Gambier, Australia, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for Mount Gambier. Planning a garden? See the gardening & growing season planner.
Annual average
13.8°C
across all months
Warmest month
25.3°C
Jan average high
Coolest month
6.7°C
Jun average low
Annual rainfall
655mm
total per year
Mount Gambier is typically hottest in January and coolest in June, a swing of about 18.6°C across the year. About 38% of annual rainfall falls in the three wettest months (July is typically wettest, February driest).
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
| Month | Avg high | Avg low | Rainfall | Wet days | Humidity | Wind | Cloud | Solar |
|---|---|---|---|---|---|---|---|---|
| Jan | 25.3°C · record 35.6–43.7°C | 12.6°C · record 6.4–10.3°C | 29mm | 4 | 67% | 3.9 m/s | 54% | 7.3 kWh/m² |
| Feb | 24.2°C · record 30.9–39.4°C | 12.4°C · record 3.6–8.6°C | 20mm | 4 | 68% | 4 m/s | 54% | 6.2 kWh/m² |
| Mar | 23°C · record 25.4–40.3°C | 11.8°C · record 2.9–8.8°C | 28mm | 6 | 71% | 3.7 m/s | 57% | 4.9 kWh/m² |
| Apr | 19.7°C · record 23.8–33.4°C | 10°C · record 1.6–6.2°C | 34mm | 7 | 74% | 3.5 m/s | 65% | 3.2 kWh/m² |
| May | 16°C · record 19.2–25.8°C | 8.3°C · record 0.6–5.6°C | 62mm | 11 | 79% | 4 m/s | 65% | 2.3 kWh/m² |
| Jun | 13.4°C · record 15.4–19.7°C | 6.7°C · record -1.5–4.3°C | 65mm | 13 | 83% | 3.9 m/s | 68% | 1.8 kWh/m² |
| Jul | 13.1°C · record 15.4–18.3°C | 6.7°C · record -1–5.1°C | 88mm | 15 | 83% | 4.4 m/s | 67% | 2 kWh/m² |
| Aug | 14.1°C · record 17.7–22.6°C | 6.9°C · record 0–2.1°C | 83mm | 15 | 80% | 4.4 m/s | 65% | 2.8 kWh/m² |
| Sep | 15.4°C · record 18.7–28.7°C | 7.3°C · record -0.2–3°C | 81mm | 14 | 78% | 4.5 m/s | 67% | 3.9 kWh/m² |
| Oct | 17.7°C · record 23.7–33.4°C | 8°C · record 2.1–5°C | 71mm | 12 | 76% | 4.3 m/s | 65% | 5.2 kWh/m² |
| Nov | 19.9°C · record 29–36°C | 9.6°C · record 2.6–6.6°C | 57mm | 10 | 73% | 4.1 m/s | 67% | 6.3 kWh/m² |
| Dec | 22.4°C · record 33–44.7°C | 10.7°C · record 2.5–7.4°C | 36mm | 6 | 69% | 4.1 m/s | 59% | 7.2 kWh/m² |
"Avg high"/"Avg low" is the mean daily high/low for that month, averaged across every year on file. The "record" figure alongside it is a different statistic — the single hottest (or coldest) hour ever recorded during that month across all years — so it can sit above or below the average and does not describe the average's year-to-year spread. A "wet day" is any day with at least 1.0mm of rain.
Year to year
Annual average temperature, 2016–2025.
Across these 10 years, the annual average has moved by about -0.09°C per decade. That’s a short window for a reliable long-term climate trend — treat it as indicative, not definitive.
Annual rainfall has moved by about -207.99mm per decade over the same period.
2025 (the most recent year on file) averaged 13.853411001266434°C, above the 9-year baseline of 13.74°C by 0.51 standard deviations.
Typical extremes per year
Rainy days
117.5 days
≥1.0mm rain
Heavy rain days
1.9 days
≥20mm rain
Extreme heat days
0.7 days
daily high ≥40°C
Frost days
0.8 days
daily low ≤0°C
Averaged across 10 years on file. Thresholds match PastClimate's data pipeline definitions — see data & sources.
Records on file
Ranked across 10 years of data currently on file (2016–2025).
Hottest day
44.7°C
20 December 2019
2019 was 0.42 SD below the 9-year average that year
Coldest day
-1.5°C
23 June 2019
2019 was 0.42 SD below the 9-year average that year
Wettest day
37mm
24 February 2016
2016 was 0.11 SD above the 9-year average that year
Windiest day
9.9m/s
1 September 2024
2024 was 0.42 SD above the 9-year average that year
See the detail: Mount Gambier on 24 February 2016.
Nearby cities
Millicent
52.1 km away
Naracoorte
83.4 km away
Portland
86.1 km away
Hamilton
109.9 km away
Port Fairy
142.7 km away
Koroit
142.7 km away
Want a side-by-side view instead? Compare Mount Gambier with another city.
Frequently asked questions about Mount Gambier's climate
What is the hottest month in Mount Gambier?
January is typically the warmest month in Mount Gambier, with an average high of 25.3°C. June is typically the coolest, averaging 6.7°C overnight.
How much does it rain in Mount Gambier?
Mount Gambier gets about 655mm of rain a year on average, with roughly 38% of it falling in the three wettest months (July is typically the wettest, February the driest).
How many extremely hot or cold days does Mount Gambier have?
On average, Mount Gambier sees about 0.7 day(s) a year at or above 40°C and about 0.8 day(s) at or below 0°C, based on 10 years of data.
Is Mount Gambier getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about -0.09°C per decade. That's a short window for a reliable long-term climate trend — treat it as indicative, not definitive.
What is the hottest day on record for Mount Gambier?
The hottest day on file is 20 December 2019 at 44.7°C, out of 10 year(s) searched.
Data & provenance
↓ Download monthly CSVData source & coverage — ERA5 reanalysis, 2016–2025 (10 years)details
- Source
- ERA5 reanalysis, accessed via the Copernicus Climate Change Service (C3S) Climate Data Store
- Data type
- Reanalysis — a physically consistent reconstruction combining a forecast model with historical observations, not a live station reading or a forecast
- Coverage
- 2016–2025 (10 years) for Australia
- Location
- Mount Gambier — -37.750°, 140.750°, ERA5 grid cell center, 9.5 km from requested point
- Time zone
- Australia/Adelaide
- What's shown here
- Monthly and annual averages, and dated extreme-value records, derived from an hourly base record.
- Spatial resolution
- 0.25° (~25 km) distributed grid — ERA5's native model resolution is finer; this is the publicly distributed regridded product
- Version / refreshed
- Methodology v2026.07 · data last refreshed December 31, 2025
- Limitations
- A model reconstruction, not a station observation — hyper-local extremes (a single storm cell, an urban heat pocket) can differ from a nearby gauge. See the full methodology.
- Attribution
- Generated using Copernicus Climate Change Service information
Cite this data
PastClimate (2026-07-17). Historical climate data for Mount Gambier, Australia (-37.75°S, 140.75°E), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Mount Gambier, Australia [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Mount Gambier, Australia." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Mount Gambier, Australia},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-17},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.