Home / Glenunga / 31 December 2018
Glenunga
Australia · 31 December 2018
← 30 December 20181 January 2019 →
Average
19.7°C
low 12.7°C · high 28.3°C
Rainfall
0mm
dry day
Wind
2.8m/s
daily average
Humidity
58.1%
daily average
Cloud
3%
cover
Pressure
1012hPa
daily average
The temperature ranged from 12.7°C around 05:00 to 28.3°C around 15:00. No measurable rain was recorded during the day.
How unusual was this day?
Compared against the same 135 calendar days (±7 days) across the other 9 years on file.
High temperature
67th percentile
Low temperature
42th percentile
Rainfall
73th percentile
Wind
32th percentile
A percentile of 100 means this was the hottest/wettest/windiest of the comparable days on file; 50 is right in the middle. This window's average temperature was 20.1°C, versus 19.7°C on this specific day.
Sun & daylight
Sunrise
06:03
Sunset
20:32
Day length
14h 29m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — Australia/Adelaide.
Cumulative rainfall through the day.
| Local time | UTC | Temp | Feels | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 13:30 | 14.6°C | 12.6°C | 0 | 2.9 | SSE | 74 | 1013 |
| 01:00 | 14:30 | 13.5°C | 11.4°C | 0 | 3 | SSE | 80 | 1012 |
| 02:00 | 15:30 | 13.5°C | 11.7°C | 0 | 2.8 | SSE | 82 | 1012 |
| 03:00 | 16:30 | 13.4°C | 11.9°C | 0 | 2.6 | SSE | 84 | 1012 |
| 04:00 | 17:30 | 12.7°C | 11.3°C | 0 | 2.4 | SSE | 88 | 1012 |
| 05:00 | 18:30 | 12.7°C | 11.4°C | 0 | 2.3 | SSE | 89 | 1012 |
| 06:00 | 19:30 | 13°C | 12°C | 0 | 2 | SE | 90 | 1013 |
| 07:00 | 20:30 | 13.1°C | 12°C | 0 | 2.2 | SSE | 88 | 1013 |
| 08:00 | 21:30 | 19.1°C | 19°C | 0 | 1.1 | SE | 65 | 1013 |
| 09:00 | 22:30 | 20.2°C | 20°C | 0 | 1.2 | S | 60 | 1013 |
| 10:00 | 23:30 | 23.8°C | 23.3°C | 0 | 1.7 | S | 49 | 1012 |
| 11:00 | 00:30 | 25.5°C | 24.8°C | 0 | 1.8 | S | 42 | 1012 |
| 12:00 | 01:30 | 26.1°C | 25.3°C | 0 | 1.7 | S | 40 | 1011 |
| 13:00 | 02:30 | 27.9°C | 26.9°C | 0 | 1.8 | SSW | 35 | 1011 |
| 14:00 | 03:30 | 27.9°C | 26.6°C | 0 | 2.1 | SSW | 34 | 1010 |
| 15:00 | 04:30 | 28.3°C | 26.5°C | 0 | 2.7 | SSW | 33 | 1010 |
| 16:00 | 05:30 | 26.5°C | 24°C | 0 | 3.6 | SSW | 34 | 1009 |
| 17:00 | 06:30 | 26.2°C | 23°C | 0 | 4.6 | S | 36 | 1010 |
| 18:00 | 07:30 | 25.3°C | 21.1°C | 0 | 5.5 | S | 35 | 1011 |
| 19:00 | 08:30 | 24.8°C | 20.4°C | 0 | 5.4 | S | 33 | 1012 |
| 20:00 | 09:30 | 18.3°C | 14.1°C | 0 | 4.8 | SSE | 46 | 1013 |
| 21:00 | 10:30 | 17.2°C | 13.8°C | 0 | 3.7 | SSE | 49 | 1014 |
| 22:00 | 11:30 | 14.4°C | 11.7°C | 0 | 3.1 | SSE | 63 | 1014 |
| 23:00 | 12:30 | 14.5°C | 12.3°C | 0 | 2.6 | SSE | 66 | 1014 |
Nearby cities
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Data 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
- Glenunga — -35.000°, 138.750°, ERA5 grid cell center, 11.6 km from requested point
- Time zone
- Australia/Adelaide
- What's shown here
- The hourly and daily record for 31 December 2018 specifically — not a monthly average. See the Glenunga climate overview for typical conditions.
- 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 (2026-07-20). Historical climate data for Glenunga, Australia (-35.00°S, 138.75°E), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Glenunga, Australia [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 20, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Glenunga, Australia." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 20, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Glenunga, Australia},
year = {2026},
note = {Derived from ERA5 (Hersbach et al., 2023), Copernicus Climate Change Service. Accessed 2026-07-20},
url = {https://www.pastclimate.com/}
}Notice something wrong with this data? Report a data issue.