Coonamble climate
Typical historical weather for Coonamble, Australia, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Data last updated: 31 December 2025
Want today's actual conditions instead? See the current forecast for Coonamble. Planning a garden? See the gardening & growing season planner. Or browse the 365-day climate calendar.
Annual average
19.6°C
across all months
Warmest month
35.5°C
Jan average high
Coolest month
5.5°C
Jul average low
Annual rainfall
515mm
total per year
Coonamble is typically hottest in January and coolest in July, a swing of about 30°C across the year. About 35% of annual rainfall falls in the three wettest months (March is typically wettest, July 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 | 35.5°C · record 38.3°C–44.4°C | 22.5°C · record 13.3°C–23°C | 36mm | 5 | 44% | 4 m/s | 37% | 7.5 kWh/m² |
| Feb | 33.9°C · record 35.7°C–46.3°C | 20.7°C · record 11.7°C–18.1°C | 40mm | 4 | 45% | 4 m/s | 29% | 7 kWh/m² |
| Mar | 31°C · record 34°C–40.3°C | 18.9°C · record 8.8°C–16.6°C | 63mm | 6 | 53% | 3.8 m/s | 39% | 5.6 kWh/m² |
| Apr | 26.1°C · record 28.8°C–35.3°C | 13.6°C · record 2.7°C–12.1°C | 35mm | 3 | 57% | 3.3 m/s | 31% | 4.7 kWh/m² |
| May | 21°C · record 24.4°C–27.7°C | 9.1°C · record 0.9°C–6.1°C | 31mm | 4 | 67% | 3.3 m/s | 37% | 3.5 kWh/m² |
| Jun | 17.3°C · record 20.2°C–25.3°C | 6.1°C · record -1.1°C–2.5°C | 37mm | 5 | 73% | 3.2 m/s | 42% | 2.8 kWh/m² |
| Jul | 17.2°C · record 20.6°C–25.6°C | 5.5°C · record -2.3°C–1.8°C | 27mm | 4 | 70% | 3.4 m/s | 39% | 3.1 kWh/m² |
| Aug | 19.1°C · record 21.8°C–31.1°C | 6°C · record 0.1°C–2.9°C | 34mm | 4 | 63% | 3.5 m/s | 31% | 4.1 kWh/m² |
| Sep | 23.3°C · record 22°C–37.2°C | 9°C · record 1.6°C–4.7°C | 45mm | 5 | 53% | 3.9 m/s | 30% | 5.4 kWh/m² |
| Oct | 27°C · record 27°C–39.2°C | 13.2°C · record 4.8°C–11.2°C | 55mm | 5 | 51% | 3.9 m/s | 35% | 6.5 kWh/m² |
| Nov | 30.1°C · record 33.5°C–41.7°C | 16.5°C · record 7.1°C–13.6°C | 61mm | 6 | 46% | 4.2 m/s | 39% | 7.3 kWh/m² |
| Dec | 33.4°C · record 34.4°C–45.4°C | 19.4°C · record 8.6°C–15.8°C | 52mm | 6 | 43% | 3.9 m/s | 31% | 7.9 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 -0.8°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 +99.03mm per decade over the same period.
2025 (the most recent year on file) averaged 19.6°C, above the 9-year baseline of 19.5°C by 0.09 standard deviations.
Typical extremes per year
Rainy days
56.1 days
≥1.0mm rain
Heavy rain days
6.1 days
≥20mm rain
Extreme heat days
8.8 days
daily high ≥40°C
Frost days
1.5 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
46.3°C
12 February 2017
2017 was 0.44 SD above the 9-year average that year
Coldest day
-2.3°C
15 July 2018
2018 was 1.12 SD above the 9-year average that year
Wettest day
69mm
21 November 2021
2021 was 2.03 SD below the 9-year average that year
Windiest day
8.8m/s
4 October 2023
2023 was 0.33 SD above the 9-year average that year
See the detail: Coonamble on 21 November 2021.
Nearby cities
Frequently asked questions about Coonamble's climate
What is the hottest month in Coonamble?
January is typically the warmest month in Coonamble, with an average high of 35.5°C. July is typically the coolest, averaging 5.5°C overnight.
How much does it rain in Coonamble?
Coonamble gets about 515mm of rain a year on average, with roughly 35% of it falling in the three wettest months (March is typically the wettest, July the driest).
How many extremely hot or cold days does Coonamble have?
On average, Coonamble sees about 8.8 day(s) a year at or above 40°C and about 1.5 day(s) at or below 0°C, based on 10 years of data.
Is Coonamble getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about -0.77°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 Coonamble?
The hottest day on file is 12 February 2017 at 46.3°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
- Coonamble — -31.000°, 148.500°, ERA5 grid cell center, 11.8 km from requested point
- Time zone
- Australia/Sydney
- 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 (2026-07-21). Historical climate data for Coonamble, Australia (-31.00°S, 148.50°E), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Coonamble, Australia [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 21, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Coonamble, Australia." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 21, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Coonamble, Australia},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-21},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.