Home / Perth / 18 January 2018
Perth
Australia · 18 January 2018
← 17 January 201819 January 2018 →
Average
22°C
low 19.6° · high 25.6°
Rainfall
0.5mm
dry day
Wind
6m/s
daily average
Humidity
72.8%
daily average
Cloud
70%
cover
Pressure
1012hPa
daily average
The temperature ranged from 19.6°C around 05:00 to 25.6°C around 16:00. 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
27th percentile
Low temperature
58th percentile
Rainfall
92th percentile
Wind
70th 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 24°C, versus 22°C on this specific day.
Sun & daylight
Sunrise
05:28
Sunset
19:25
Day length
13h 57m
Hour by hour
Temperature (line) and hourly rainfall (bars), local time — Australia/Perth.
Cumulative rainfall through the day.
| Local time | UTC | Temp °C | Feels °C | Rain mm | Wind m/s | Dir | Humidity % | Pressure hPa |
|---|---|---|---|---|---|---|---|---|
| 00:00 | 16:00 | 20.5 | 18.5 | 0.06 | 7.3 | SSW | 90 | 1009 |
| 01:00 | 17:00 | 20.1 | 18 | 0.06 | 7.3 | SSW | 90 | 1009 |
| 02:00 | 18:00 | 20 | 18 | 0.05 | 7 | SSW | 90 | 1009 |
| 03:00 | 19:00 | 19.9 | 18 | 0.05 | 6.7 | S | 88 | 1009 |
| 04:00 | 20:00 | 19.7 | 17.6 | 0.05 | 6.6 | S | 87 | 1010 |
| 05:00 | 21:00 | 19.6 | 17.6 | 0.06 | 6.5 | S | 86 | 1011 |
| 06:00 | 22:00 | 19.8 | 17.8 | 0.07 | 6.2 | S | 83 | 1012 |
| 07:00 | 23:00 | 19.9 | 17.5 | 0.04 | 6.5 | S | 81 | 1012 |
| 08:00 | 00:00 | 19.9 | 17.4 | 0.02 | 6.7 | S | 81 | 1013 |
| 09:00 | 01:00 | 20.2 | 17.8 | 0 | 6.5 | SSE | 78 | 1013 |
| 10:00 | 02:00 | 21.1 | 18.9 | 0 | 6.1 | SSE | 74 | 1013 |
| 11:00 | 03:00 | 21.7 | 19.8 | 0 | 5.6 | SSE | 71 | 1013 |
| 12:00 | 04:00 | 23.2 | 21.6 | 0 | 5 | SSE | 62 | 1013 |
| 13:00 | 05:00 | 24.3 | 23.1 | 0 | 4.4 | SSE | 58 | 1013 |
| 14:00 | 06:00 | 24.9 | 23.6 | 0 | 4.4 | S | 55 | 1013 |
| 15:00 | 07:00 | 25.5 | 23.6 | 0 | 4.9 | S | 52 | 1012 |
| 16:00 | 08:00 | 25.6 | 23.2 | 0 | 5.6 | SSW | 51 | 1012 |
| 17:00 | 09:00 | 25.5 | 23 | 0 | 6.1 | SSW | 55 | 1012 |
| 18:00 | 10:00 | 24.6 | 22.4 | 0 | 6.5 | SSW | 62 | 1012 |
| 19:00 | 11:00 | 23.2 | 21.6 | 0 | 5.8 | SSW | 69 | 1012 |
| 20:00 | 12:00 | 22.7 | 21.8 | 0 | 5.2 | S | 74 | 1013 |
| 21:00 | 13:00 | 22.4 | 21.2 | 0 | 5.4 | SSE | 74 | 1014 |
| 22:00 | 14:00 | 21.9 | 19.5 | 0 | 6 | SE | 68 | 1014 |
| 23:00 | 15:00 | 21.4 | 18.5 | 0 | 6.2 | SE | 65 | 1015 |
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
- Perth — -32.000°, 115.750°, ERA5 grid cell center, 11.8 km from requested point
- Time zone
- Australia/Perth
- What's shown here
- The hourly and daily record for 18 January 2018 specifically — not a monthly average. See the Perth 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 (2026-07-17). Historical climate data for Perth, Australia (-32.00°S, 115.75°E), derived from ERA5 (Hersbach et al., 2023, Copernicus Climate Change Service). Retrieved from https://www.pastclimate.com/
PastClimate. (2026). Historical climate data for Perth, Australia [Data set]. Derived from ERA5 (Copernicus Climate Change Service). Retrieved July 17, 2026, from https://www.pastclimate.com/
"Historical Climate Data for Perth, Australia." PastClimate, derived from ERA5 (Copernicus Climate Change Service), July 17, 2026, www.pastclimate.com.
@misc{pastclimate,
author = {PastClimate},
title = {Historical climate data for Perth, 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.