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Mount Ommaney climate
Typical historical weather for Mount Ommaney, Australia, averaged across 10 years of hourly climate data. Pick a date for a specific day.
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Annual average
20.2°C
across all months
Warmest month
29.2°C
Jan average high
Coolest month
9°C
Jul average low
Annual rainfall
1061mm
total per year
Mount Ommaney is typically hottest in January and coolest in July, a swing of about 20.2°C across the year. About 44% of annual rainfall falls in the three wettest months (March is typically wettest, August 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 | 29.2°C · record 31.1–35.8°C | 21.1°C · record 15–19.4°C | 107mm | 14 | 75% | 2.8 m/s | 53% | 6.2 kWh/m² |
| Feb | 29.2°C · record 31.8–37.9°C | 20.9°C · record 16–20°C | 148mm | 14 | 76% | 3 m/s | 51% | 5.6 kWh/m² |
| Mar | 27.9°C · record 31–36.5°C | 20.1°C · record 13.3–18.7°C | 207mm | 17 | 79% | 2.8 m/s | 57% | 4.6 kWh/m² |
| Apr | 25.8°C · record 28–32.8°C | 16.3°C · record 9–14.9°C | 60mm | 10 | 76% | 2.6 m/s | 42% | 4.2 kWh/m² |
| May | 23.3°C · record 25.1–28.7°C | 13°C · record 3–11.7°C | 67mm | 8 | 76% | 2.5 m/s | 43% | 3.4 kWh/m² |
| Jun | 21.1°C · record 23.3–27.3°C | 9.8°C · record 3.3–6.6°C | 44mm | 6 | 75% | 2.6 m/s | 38% | 3.2 kWh/m² |
| Jul | 21.1°C · record 23.6–28.7°C | 9°C · record 2.8–4.8°C | 41mm | 6 | 73% | 2.6 m/s | 34% | 3.4 kWh/m² |
| Aug | 22.7°C · record 24.3–34.2°C | 9.6°C · record 3.3–5.9°C | 33mm | 5 | 70% | 2.5 m/s | 28% | 4.3 kWh/m² |
| Sep | 24.7°C · record 27.3–37.5°C | 12.6°C · record 6.3–9.6°C | 37mm | 6 | 69% | 2.7 m/s | 35% | 5.1 kWh/m² |
| Oct | 26.2°C · record 28.9–38.1°C | 16°C · record 8.6–13.2°C | 112mm | 11 | 73% | 2.8 m/s | 46% | 5.6 kWh/m² |
| Nov | 27.5°C · record 28.6–36.6°C | 17.8°C · record 9.3–16.3°C | 97mm | 12 | 71% | 2.8 m/s | 49% | 6.2 kWh/m² |
| Dec | 28.8°C · record 31.3–38.6°C | 19.9°C · record 13.8–17.3°C | 110mm | 13 | 74% | 2.8 m/s | 52% | 6.5 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 -0.2°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 +584.05mm per decade over the same period.
2025 (the most recent year on file) averaged 20.343957965450223°C, above the 9-year baseline of 20.17°C by 0.47 standard deviations.
Typical extremes per year
Rainy days
122.7 days
≥1.0mm rain
Heavy rain days
11.4 days
≥20mm rain
Extreme heat days
0 days
daily high ≥40°C
Frost days
0 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
38.6°C
16 December 2019
2019 was 0.98 SD above the 9-year average that year
Coldest day
2.8°C
15 July 2018
2018 was 0.55 SD below the 9-year average that year
Wettest day
291.1mm
9 March 2025
2025 was 0.47 SD above the 9-year average that year
Windiest day
7.7m/s
7 March 2025
2025 was 0.47 SD above the 9-year average that year
See the detail: Mount Ommaney on 9 March 2025.
Nearby cities
Brisbane
Same ERA5 grid cell
Sunnybank Hills
Same ERA5 grid cell
Calamvale
Same ERA5 grid cell
The Gap
Same ERA5 grid cell
Coorparoo
Same ERA5 grid cell
Carindale
Same ERA5 grid cell
Want a side-by-side view instead? Compare Mount Ommaney with another city.
Frequently asked questions about Mount Ommaney's climate
What is the hottest month in Mount Ommaney?
January is typically the warmest month in Mount Ommaney, with an average high of 29.2°C. July is typically the coolest, averaging 9°C overnight.
How much does it rain in Mount Ommaney?
Mount Ommaney gets about 1061mm of rain a year on average, with roughly 44% of it falling in the three wettest months (March is typically the wettest, August the driest).
How many extremely hot or cold days does Mount Ommaney have?
On average, Mount Ommaney sees about 0 day(s) a year at or above 40°C and about 0 day(s) at or below 0°C, based on 10 years of data.
Is Mount Ommaney getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about -0.2°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 Ommaney?
The hottest day on file is 16 December 2019 at 38.6°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 Ommaney — -27.500°, 153.000°, ERA5 grid cell center, 8.4 km from requested point
- Time zone
- Australia/Brisbane
- 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 (2026-07-18). Historical climate data for Mount Ommaney, Australia (-27.50°S, 153.00°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 Ommaney, Australia [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Mount Ommaney, Australia." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 18, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Mount Ommaney, Australia},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-18},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.