Climate averages 1991–2020
Adelaide weather
in January.
A warm, fairly dry month: the warmest and one of the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Adelaide: daytime highs average 27.7°C and nights cool to about 16.6°C. By daytime temperature it is the warmest month of the year.
Expect about 19 mm of rain on roughly 3 days, which makes January a fairly dry month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 14 h 12 min on an average January day.
The nearest other city in this atlas is Adelaide Hills (10 km away). In January its highs average 26.4°C, 1.3°C cooler than Adelaide, with 21 mm of rain.
Among the 32 cities listed in Australia, Adelaide ranks 15th of 32 for the warmest January highs and 4th of 32 for the driest January (rainfall, lowest first). The mean January high of those 32 cities is 27.2°C; Adelaide is 0.4°C warmer than that mean.
From January to February, average highs fall by 0.2°C to 27.5°C, and monthly rainfall stays at 19 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Adelaide climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 27.7°C16.6°C | 16.6°C | 19 | 3.3 | 14.214 h |
| February | 27.5°C16.8°C | 16.8°C | 19 | 2.7 | 13.413 h |
| March | 24.8°C15.2°C | 15.2°C | 19 | 3.5 | 12.312 h |
| April | 21.2°C13.2°C | 13.2°C | 36 | 5.6 | 11.211 h |
| May | 17.4°C11.0°C | 11.0°C | 52 | 8.3 | 10.310 h |
| June | 14.5°C9.0°C | 9.0°C | 61 | 9.6 | 9.810 h |
| July | 13.7°C8.2°C | 8.2°C | 64 | 10.4 | 10.010 h |
| August | 14.6°C8.3°C | 8.3°C | 58 | 10.8 | 10.811 h |
| September | 17.0°C9.7°C | 9.7°C | 53 | 9.8 | 11.812 h |
| October | 20.1°C11.2°C | 11.2°C | 35 | 6.4 | 12.913 h |
| November | 23.1°C13.3°C | 13.3°C | 30 | 5.3 | 13.914 h |
| December | 25.3°C15.0°C | 15.0°C | 25 | 4.8 | 14.414 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Adelaide Hills in JanuaryAustralia · 10 kmHigh 26.4°C · Low 14.3°C · 21 mm rain
- Bendigo in JanuaryAustralia · 551 kmHigh 28.4°C · Low 15.3°C · 38 mm rain
- Ballarat in JanuaryAustralia · 555 kmHigh 24.7°C · Low 12.3°C · 45 mm rain
- Geelong in JanuaryAustralia · 627 kmHigh 24.0°C · Low 14.8°C · 37 mm rain
- Melbourne in JanuaryAustralia · 654 kmHigh 25.5°C · Low 14.7°C · 49 mm rain
- Canberra in JanuaryAustralia · 958 kmHigh 26.7°C · Low 14.3°C · 48 mm rain
- Sydney in JanuaryAustralia · 1162 kmHigh 25.6°C · Low 19.5°C · 73 mm rain
- Newcastle, Australia in JanuaryAustralia · 1235 kmHigh 26.1°C · Low 20.2°C · 76 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Adelaide) is explained once on the Adelaide year overview and on the Sources, method and limits page.