Portugal Porto Weather in August — Climate Guide
August in Porto is very-high
August is very-high for Porto.
Peak month. Foz beach peak. Hotels at maximum. Cellars busy.
Travel score
Porto August Weather Stats
Avg High
26°C
Avg Low
15°C
Rainy Days
3
25mm total
Sunshine
9h
Daily avg
Humidity
70%
moderate
UV Index
9
Very high
Wind
8 km/h
Gusts 20
Sea Temp
19°C
swimming peak
Crowds
Very busy
At attractions
August Sunrise & Sunset
Air Quality
PM2.5
12 μg/m³
PM10
22 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
27°C
Nighttime
16°C
Humidity and wind affect how the actual temperature feels.
Wind
8 km/h
Max gust 20 km/h
Activities Recommended for August
August Travel Pros & Cons
Pros
- 26°C warm summer
- Foz beach peak
- Long days
Cons
- European holidays surge
- Hotels at peak
- Tourist crush
August Events & Festivals
- European summer holidays peak
Porto in August — Full Picture
Peak month. Foz beach peak. Hotels at maximum. Cellars busy.
What to Wear & What to Pack
Like July. Hot summer.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
18.3°C
9.3°C
10.3/mo
Summer (Jun·Jul·Aug)
Current24.7°C
14.3°C
4/mo
Autumn (Sep·Oct·Nov)
20.7°C
11.7°C
9.7/mo
Winter (Dec·Jan·Feb)
14.3°C
6.3°C
12.7/mo
Porto Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 14° | 6° | 13d·150mm | 4h | 80% | 2 | Quiet | Low season | |
| 15° | 6° | 12d·110mm | 5h | 78% | 3 | Quiet | Low season | |
| 17° | 8° | 11d·90mm | 6h | 75% | 5 | Moderate | Shoulder | |
| April (Best) | 18° | 9° | 11d·90mm | 7h | 73% | 6 | Busy | Peak |
| May (Best) | 20° | 11° | 9d·80mm | 8h | 70% | 7 | Busy | Peak |
| June (Best) | 23° | 13° | 6d·40mm | 9h | 70% | 8 | Very busy | Peak |
| July (Best) | 25° | 15° | 3d·20mm | 10h | 70% | 9 | Very busy | Peak |
| August (Best) | 26° | 15° | 3d·25mm | 9h | 70% | 9 | Very busy | Peak |
| September (Best) | 24° | 14° | 6d·60mm | 8h | 73% | 7 | Very busy | Peak |
| 21° | 12° | 11d·100mm | 6h | 78% | 5 | Moderate | Shoulder | |
| 17° | 9° | 12d·130mm | 4h | 80% | 3 | Quiet | Low season | |
| 14° | 7° | 13d·150mm | 4h | 80% | 2 | Moderate | Shoulder |
View Other Months
Porto August Hotel Picks
Frequently Asked Questions
Is August a good time to visit Porto?
Porto in August is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Porto in August?
Porto August averages a high of 26°C and a low of 15°C.
Does it rain much in Porto in August?
Porto August averages 25mm of rainfall over about 3 rainy days.
What should I wear in Porto in August?
Like July. Hot summer.
What time are sunrise and sunset in Porto in August?
Porto August sunrise is 06:50 and sunset is 20:30, with 13h 40min of daylight.
What's the air quality like in Porto in August?
Porto August air quality (AQI) averages 35, rated Good. PM2.5 averages 12μg/m³.
What activities are recommended in Porto in August?
In August, Porto is great for Foz beach, Cellars, Douro Valley.
Is August peak season in Porto?
Porto August crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Porto
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.