Lisbon · SummerMonth summary
Lisbon weather in August
✅ Excellent
🌡️ Temperature min / max
18°C – 28°C
🌧 Rainy days
2% of days
☀️ Sunshine
12.4h per day on average
🌊 🌊 Season
Summer
⭐ ⭐ Weather score
9.7/10
📅 📅 Best month
July (9.7/10)
Quick decision
Should you visit Lisbon in August?
✅ Excellent
✅ Yes if: you want to combine beach, sightseeing and hiking — versatile weather (28°C, little rain).
❌ No if: you want to avoid tourist crowds — this is the busiest period.
Our take: August is an excellent time to visit Lisbon. 28°C, 12.4h of sunshine — optimal conditions.
By trip type
Lisbon in August by trip type
- 🏙️ 🏙️ City break / culture : ✅ Good
- 🚶 🚶 Outdoor activities : ✅ Good
- 🏖️ Beach / swimming : ✅ Good
- 💰 💰 Budget : 💸 Peak season
Local context
What to expect in August
🎯 Ideal conditions for families — pleasant weather and outdoor activities accessible Summer in Lisbon brings pleasant temperatures (28°C) and long sunny days (12.4h of sunshine). Rain is virtually absent (2% of days) — ideal for planning without a backup. This is one of the best times of year to visit Lisbon.
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All months for Lisbon
Annual table
Month-by-month comparison
| Month | Min °C | Max °C | Rain % | Precip mm | Sun h/d | Score |
|---|---|---|---|---|---|---|
| ⛅ January | 9°C | 15°C | 26% | 2.2 | 8.5h | 7.0/10 |
| ⛅ February | 9°C | 16°C | 25% | 2.0 | 9.3h | 7.0/10 |
| ⛅ March | 10°C | 16°C | 34% | 2.4 | 10.4h | 7.0/10 |
| 🌤️ April | 12°C | 18°C | 33% | 2.3 | 11.7h | 7.2/10 |
| 🌤️ May | 14°C | 22°C | 15% | 1.3 | 13.0h | 8.5/10 |
| 🌤️ June | 16°C | 24°C | 13% | 0.5 | 13.4h | 8.9/10 |
| ☀️ July | 18°C | 27°C | 3% | 0.1 | 13.3h | 9.7/10 |
| ☀️ August | 18°C | 28°C | 2% | 0.0 | 12.4h | 9.7/10 |
| ☀️ September | 17°C | 26°C | 13% | 1.0 | 11.0h | 8.7/10 |
| 🌤️ October | 16°C | 23°C | 28% | 2.4 | 9.7h | 7.7/10 |
| ⛅ November | 12°C | 18°C | 36% | 3.0 | 8.7h | 7.0/10 |
| ⛅ December | 10°C | 16°C | 28% | 2.7 | 8.2h | 7.0/10 |
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, Lisbon averages 28°C, 2% rainy days and 12.4h of sunshine per day. Overall weather score: 9.7/10.
See methodology →
Comparison
August vs July (best month)
The best month is July (score 9.7/10). Difference:
- 🌡️ Max temperature : -1°C
- 🌧 Rainy days : +1%
- ☀️ Sunshine : +0.9h/day
FAQ
FAQ — Lisbon in August
Is August a good time to visit Lisbon?
August is an excellent time to visit Lisbon (score 9.7/10). With 28°C, 12.4h of sunshine and 2% rain, conditions are very favourable.
What to do in Lisbon in August?
With 28°C and 12.4h of sunshine, all outdoor activities are possible: hiking, sightseeing and terraces.
Accommodation
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Activities & tours
Activities and tours in Lisbon
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