San Luis Obispo in August
9.1out of 10
Yes, a good time to go
Warm and comfortable: highs around 23°C. Very dry: about 0 rainy days.
23°CAvg high
15°CAvg low
0Rainy days (0 mm)
13:20 hDaylight
06:27Sunrise · 19:47 Sunset
Why this score
- Warm and comfortable: highs around 23°C
- Very dry: about 0 rainy days
What to wear and pack
- T-shirts and light layers
How reliable is the forecast?
Rainfall in August is fairly consistent from year to year (0.3 days). Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 16°C | 9°C | 99 mm | 7 | – | – | 7.1 |
| February | 16°C | 9°C | 94 mm | 8 | – | – | 7.0 |
| March | 17°C | 10°C | 70 mm | 7 | – | – | 7.4 |
| April | 18°C | 10°C | 26 mm | 3 | – | – | 7.9 |
| May | 19°C | 12°C | 10 mm | 1 | – | – | 8.4 |
| June | 21°C | 13°C | 2 mm | 0 | – | – | 8.8 |
| July | 22°C | 15°C | 1 mm | 0 | – | – | 9.0 |
| August | 23°C | 15°C | 0 mm | 0 | – | – | 9.1 |
| September | 23°C | 15°C | 1 mm | 0 | – | – | 9.0 |
| October | 21°C | 14°C | 19 mm | 2 | – | – | 8.8 |
| November | 18°C | 11°C | 34 mm | 4 | – | – | 8.0 |
| December | 16°C | 9°C | 76 mm | 6 | – | – | 7.2 |
Frequently asked questions
How hot is San Luis Obispo in August?
Daytime highs average 23°C and nights about 15°C.
When is the best time to visit San Luis Obispo?
The best months are August, July, September, June.