San Francisco · SummerMonth summary
San Francisco weather in August
✅ Good
🌡️ Temperature min / max
14°C – 19°C
🌧 Rainy days
1% of days
☀️ Sunshine
12.1h per day on average
🌊 🌊 Season
Summer
⭐ ⭐ Weather score
8.0/10
📅 📅 Best month
June (8.0/10)
Quick decision
Should you visit San Francisco in August?
✅ Good
✅ Yes if: you want long sunny days and outdoor activities.
❌ No if: you want to avoid summer crowds — this is peak tourist season.
Our take: August is a good time to visit San Francisco. June remains slightly better (+0.0 pts).
By trip type
San Francisco in August by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ❌ Not recommended
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in August
🎯 Grapes ripening — wine tours and outdoor tasting terraces In August, San Francisco sees 19°C during the day with 12.1h of sunshine per day. Rain is virtually absent (1% of days) — ideal for planning without a backup. A good balance between weather and crowds, even if June (8.0/10) remains theoretically better.
Browse by month
All months for San Francisco
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 8°C | 14°C | 34% | 4.1 | 8.0h | 5.4/10 |
| ⛅ February | 8°C | 14°C | 29% | 3.4 | 9.4h | 6.4/10 |
| ⛅ March | 9°C | 14°C | 36% | 3.3 | 10.6h | 6.4/10 |
| ⛅ April | 10°C | 15°C | 15% | 1.1 | 11.9h | 7.2/10 |
| ⛅ May | 11°C | 16°C | 8% | 0.6 | 12.9h | 7.5/10 |
| 🌤️ June | 12°C | 18°C | 1% | 0.0 | 13.7h | 8.0/10 |
| 🌤️ July | 13°C | 18°C | 0% | 0.0 | 13.0h | 7.9/10 |
| 🌤️ August | 14°C | 19°C | 1% | 0.0 | 12.1h | 8.0/10 |
| 🌤️ September | 14°C | 20°C | 4% | 0.1 | 11.3h | 8.0/10 |
| 🌤️ October | 13°C | 19°C | 10% | 1.0 | 9.9h | 7.6/10 |
| ⛅ November | 10°C | 16°C | 23% | 2.1 | 8.8h | 7.0/10 |
| ⛅ December | 8°C | 13°C | 32% | 4.3 | 8.0h | 5.3/10 |
Ideal
Fair
Challenging climate
◀ Current month · Source Open-Meteo · 10 years
📊 Data source
Data based on 10 years of ERA5 records via Open-Meteo, with ECMWF seasonal adjustment. In August, San Francisco averages 19°C, 1% rainy days and 12.1h of sunshine per day. Overall weather score: 8.0/10.
See methodology →
Comparison
August vs June (best month)
The best month is June (score 8.0/10). Difference:
- 🌡️ Max temperature : -1°C
- 🌧 Rainy days : +0%
- ☀️ Sunshine : +1.6h/day
FAQ
FAQ — San Francisco in August
Is August a good time to visit San Francisco?
August is an excellent time to visit San Francisco (score 8.0/10). With 19°C, 12.1h of sunshine and 1% rain, conditions are very favourable.
What to do in San Francisco in August?
With 19°C and 12.1h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
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Activities & tours
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