Complete Douro Valley Wine Tour with Lunch, Wine Tastings and River Cruise
4.921,225 reviews10h
from €89
Check availabilityBest months
June, July, and August
Warmest month
August, 26°C
Wettest month
December, 158 mm
Porto weather by month
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 14°C / 6°C | 118 mm · 9 days | Fair |
| February | 16°C / 7°C | 93 mm · 8 days | Fair |
| March | 17°C / 9°C | 102 mm · 8 days | Fair |
| April | 19°C / 10°C | 89 mm · 7 days | Fair |
| May | 21°C / 12°C | 58 mm · 6 days | Great |
| June | 23°C / 15°C | 42 mm · 3 days | Great |
| July | 25°C / 15°C | 21 mm · 3 days | Great |
| August | 26°C / 16°C | 11 mm · 2 days | Great |
| September | 24°C / 15°C | 64 mm · 4 days | Great |
| October | 22°C / 13°C | 142 mm · 9 days | Great |
| November | 17°C / 9°C | 149 mm · 10 days | Wet |
| December | 15°C / 7°C | 158 mm · 12 days | Wet |
Porto by season
Spring
Spring is delightful, with mild temperatures, blooming jacaranda trees, and fewer crowds than peak summer. Days are sunny and perfect for exploring on foot.
- + Pleasant weather (15-20°C)
- + Lower accommodation prices
- + Festivals like Queima das Fitas in May
- − Some rain showers possible
- − Ocean water still quite cold for swimming
Summer
Warm, sunny, and vibrant, with long days perfect for river cruises and beach trips. This is peak tourist season, with a lively festival atmosphere, especially during São João in June.
- + Hot, dry weather (avg 25°C)
- + Long daylight hours
- + Major festivals and street parties
- − Crowded at major attractions
- − Higher prices for flights and hotels
Autumn
A golden, serene season. The summer crowds dissipate, the weather remains mild into October, and the Douro Valley vineyards turn beautiful shades of red and yellow.
- + Warm, sunny September
- + Beautiful fall colors in the Douro
- + Grape harvest (vindima) season
- − Increasing chance of rain from November
- − Shorter days
Winter
Cool, damp, and atmospheric. While not cold by northern European standards, it's the quietest and cheapest time to visit. The city feels local, and the port wine lodges are cozy.
- + Lowest tourist crowds and prices
- + Authentic local atmosphere
- + Perfect weather for port tasting by a fireplace
- − Chilly and rainy days (avg 12°C)
- − Some outdoor attractions less appealing
Porto month by month
Porto in January
FairIn January, Porto averages highs of 14°C and lows of 6°C, with about 9 rainy days and 118 mm of rain. Expect mixed weather, with comfortable spells.
Porto in February
FairIn February, Porto averages highs of 16°C and lows of 7°C, with about 8 rainy days and 93 mm of rain. Expect mixed weather, with comfortable spells.
Porto in March
FairIn March, Porto averages highs of 17°C and lows of 9°C, with about 8 rainy days and 102 mm of rain. Expect mixed weather, with comfortable spells.
Porto in April
FairIn April, Porto averages highs of 19°C and lows of 10°C, with about 7 rainy days and 89 mm of rain. Expect mixed weather, with comfortable spells.
Porto in May
GreatIn May, Porto averages highs of 21°C and lows of 12°C, with about 6 rainy days and 58 mm of rain. It is one of the most comfortable months for sightseeing.
Porto in June
GreatIn June, Porto averages highs of 23°C and lows of 15°C, with about 3 rainy days and 42 mm of rain. It is one of the most comfortable months for sightseeing.
Porto in July
GreatIn July, Porto averages highs of 25°C and lows of 15°C, with about 3 rainy days and 21 mm of rain. It is one of the most comfortable months for sightseeing.
Porto in August
GreatIn August, Porto averages highs of 26°C and lows of 16°C, with about 2 rainy days and 11 mm of rain. It is one of the most comfortable months for sightseeing.
Porto in September
GreatIn September, Porto averages highs of 24°C and lows of 15°C, with about 4 rainy days and 64 mm of rain. It is one of the most comfortable months for sightseeing.
Porto in October
GreatIn October, Porto averages highs of 22°C and lows of 13°C, with about 9 rainy days and 142 mm of rain. It is one of the most comfortable months for sightseeing.
Porto in November
WetIn November, Porto averages highs of 17°C and lows of 9°C, with about 10 rainy days and 149 mm of rain. It is one of the wetter months, so keep indoor plans in reserve.
Porto in December
WetIn December, Porto averages highs of 15°C and lows of 7°C, with about 12 rainy days and 158 mm of rain. It is one of the wetter months, so keep indoor plans in reserve.
Top tours and experiences in Porto
The tours and tickets travellers book most, with ratings and reviews from Viator.
Douro Valley: Historical Sites, Wine Experience, Lunch & Cruise
4.86,878 reviews10h
from €85
Check availability
Douro Valley Small Group Tour: 2 Wineries, Lunch & River Cruise
4.95,895 reviews9h
from €89
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All things to do in Porto →
Tours and prices from Viator, a Tripadvisor company. Prices change with your dates. We may earn a commission if you book, at no extra cost to you.
Plan your Porto trip
Best time to visit Porto: FAQ
What is the best month to visit Porto?+
June is the most comfortable month on average, with highs of 23°C. July and August are close behind.
What is the rainiest month in Porto?+
December is the wettest month, with about 158 mm of rain.
How hot does Porto get?+
August is the warmest month, with average highs of 26°C and lows of 16°C. The coldest nights come in January, averaging 6°C.
Averages for 2006–2025 from the PORTO weather station (4 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.