Australia
Adelaide in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Adelaide in August is climatically mixed. The average daily high is around 15 °C, and the sea is about 13 °C. With about 12 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
43/100 · #10
Warmth
#10
Dryness
#10
Sun
#9
Sea warmth
#12
Published best categories: none
Adelaide · AugustPhoto: Maggas at English Wikipedia · Public domainClimate facts
- Average high
- 15 °C
- Average low
- 7 °C
- Sea
- 13 °C
- Rainy days (est.)
- 12 rainy days (est.)
- Sun (est.)
- 4 h/day
- Humidity
- 76 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| July | 14 | 6 | 12 | 62 | 3.2 | 80 | 2.5 | 13 | 37 |
| August (selected) | 15 | 7 | 12 | 53 | 4.3 | 76 | 2.6 | 13 | 43 |
| September | 18 | 8 | 9 | 50 | 5.9 | 72 | 2.6 | 14 | 58 |
How do the previous and next months compare?
Baseline: August (43/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| July | -6 | -1.1 °C | -0.2 °C | +0.7 | +9.3 mm | -1.1 h | +3.5 % | -0.1 m/s | +0.4 °C |
| September | +15 | +2.6 °C | +1.3 °C | -2.3 | -2.8 mm | +1.6 h | -4.7 % | ±0 m/s | +0.9 °C |
All twelve months in context

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Useful next decisions
Frequently asked questions
How warm is Adelaide in August?
The average daily high is around 15 °C, with an average daily low of about 7 °C.
Can you swim in Adelaide in August?
The sea is about 13 °C (cold).
Does it rain a lot in Adelaide in August?
The curated estimate is about 12 rainy days per month, not a directly measured long-term average. Total precipitation averages around 53 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Adelaide?
By the climate score, January, February, March and December are the strongest months for Adelaide. For a beach trip: January, February, March and December. August is not among them.