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Mount Coolum climate
Typical historical weather for Mount Coolum, Australia, averaged across 10 years of hourly climate data. Pick a date for a specific day.
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Annual average
20.8°C
across all months
Warmest month
28.6°C
Jan average high
Coolest month
10.8°C
Jul average low
Annual rainfall
1051mm
total per year
Mount Coolum is typically hottest in January and coolest in July, a swing of about 17.8°C across the year. About 40% 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 | 28.6°C · record 30.3–37.1°C | 21.9°C · record 17.3–21.2°C | 116mm | 15 | 77% | 2.9 m/s | 54% | 6.1 kWh/m² |
| Feb | 28.5°C · record 31.7–36.4°C | 21.8°C · record 17.8–21.3°C | 139mm | 15 | 78% | 3.3 m/s | 52% | 5.6 kWh/m² |
| Mar | 27.5°C · record 30–33.2°C | 21.1°C · record 15.4–19.4°C | 168mm | 20 | 82% | 3 m/s | 59% | 4.7 kWh/m² |
| Apr | 25.4°C · record 27.3–31.2°C | 17.7°C · record 10.6–16.8°C | 78mm | 14 | 80% | 3 m/s | 44% | 4.2 kWh/m² |
| May | 23°C · record 24.8–29.3°C | 14.5°C · record 5.7–12.2°C | 77mm | 13 | 79% | 2.8 m/s | 45% | 3.4 kWh/m² |
| Jun | 21.1°C · record 23.1–26.9°C | 11.5°C · record 4.3–8.1°C | 50mm | 7 | 77% | 2.7 m/s | 38% | 3.2 kWh/m² |
| Jul | 21°C · record 23.4–28.7°C | 10.8°C · record 4.4–7.1°C | 45mm | 7 | 75% | 2.6 m/s | 34% | 3.4 kWh/m² |
| Aug | 22.6°C · record 25.6–31.5°C | 11.3°C · record 4.1–8.1°C | 29mm | 6 | 72% | 2.6 m/s | 30% | 4.3 kWh/m² |
| Sep | 24.4°C · record 27.4–35.2°C | 14°C · record 7.7–11°C | 31mm | 7 | 71% | 2.9 m/s | 37% | 5.2 kWh/m² |
| Oct | 25.9°C · record 29.7–37.7°C | 17.1°C · record 9.6–14.4°C | 117mm | 10 | 75% | 2.9 m/s | 47% | 5.7 kWh/m² |
| Nov | 27.4°C · record 28–36.8°C | 19°C · record 10.8–17.7°C | 89mm | 11 | 73% | 3 m/s | 50% | 6.3 kWh/m² |
| Dec | 28.4°C · record 30.1–38.3°C | 20.9°C · record 15.9–19.4°C | 113mm | 14 | 76% | 3 m/s | 55% | 6.4 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 -0.17°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 +302.32mm per decade over the same period.
2025 (the most recent year on file) averaged 20.91041259765627°C, above the 9-year baseline of 20.74°C by 0.53 standard deviations.
Typical extremes per year
Rainy days
136.9 days
≥1.0mm rain
Heavy rain days
10.4 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
38.3°C
16 December 2019
2019 was 0.99 SD above the 9-year average that year
Coldest day
4.1°C
22 August 2018
2018 was 0.73 SD below the 9-year average that year
Wettest day
127.8mm
5 January 2016
2016 was 0.51 SD above the 9-year average that year
Windiest day
7.2m/s
22 February 2019
2019 was 0.99 SD above the 9-year average that year
See the detail: Mount Coolum on 5 January 2016.
Nearby cities
Tewantin
Same ERA5 grid cell
Noosaville
Same ERA5 grid cell
Coolum Beach
Same ERA5 grid cell
Bli Bli
Same ERA5 grid cell
Noosa Heads
Same ERA5 grid cell
Peregian Springs
Same ERA5 grid cell
Want a side-by-side view instead? Compare Mount Coolum with another city.
Frequently asked questions about Mount Coolum's climate
What is the hottest month in Mount Coolum?
January is typically the warmest month in Mount Coolum, with an average high of 28.6°C. July is typically the coolest, averaging 10.8°C overnight.
How much does it rain in Mount Coolum?
Mount Coolum gets about 1051mm of rain a year on average, with roughly 40% 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 Coolum have?
On average, Mount Coolum 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 Coolum getting warmer?
Across the 10 years on file (2016–2025), the annual average temperature has moved by about -0.17°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 Coolum?
The hottest day on file is 16 December 2019 at 38.3°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
- Mount Coolum — -26.500°, 153.000°, ERA5 grid cell center, 11.7 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 Coolum, Australia (-26.50°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 Coolum, Australia [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 18, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Mount Coolum, 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 Coolum, 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.