Adelaide is warmest in January, averaging 30° by day and 16° at night. The wettest month is June with 63 mm, and the year brings about 407 mm in total.
Month by month
| Month | High | Low | Rain | Sea | Daylight | Good for |
|---|---|---|---|---|---|---|
| January | 30° | 16° | 22 mm | 22° | 14.1 h | Beach weather |
| February | 29° | 16° | 6 mm | 22° | 13.3 h | Beach weather |
| March | 27° | 15° | 34 mm | 22° | 12.3 h | Beach weather |
| April | 22° | 12° | 30 mm | 20° | 11.1 h | Sightseeing |
| May | 18° | 10° | 43 mm | 17° | 10.2 h | Sightseeing |
| June | 15° | 7° | 63 mm | 15° | 9.7 h | Mild |
| July | 14° | 7° | 43 mm | 13° | 9.9 h | Mild |
| August | 16° | 7° | 47 mm | 13° | 10.7 h | Mild |
| September | 19° | 8° | 39 mm | 14° | 11.8 h | Sightseeing |
| October | 21° | 10° | 37 mm | 16° | 12.9 h | Sightseeing |
| November | 25° | 12° | 27 mm | 18° | 13.9 h | Sightseeing |
| December | 27° | 14° | 16 mm | 20° | 14.3 h | Beach weather |
High and low are average daily maximum and minimum, rain is typical monthly total, sea is the average surface temperature, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER and NOAA MUR — averages, not promises.
When to go
Beach weather: January, February, March and December — highs around 28°, nights no colder than 14°, and at most 34 mm of rain in a month. The sea sits at 20–22° then.
Walking the city: April, May, September, October and November — highs of 18–25° and no more than 43 mm of rain a month.