Best time to visit Porto
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Porto
30 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Porto).
- 1
Porto to Lisbon Up to 4 Stops: Aveiro, Nazare, Fatima & Obidos - 2
Porto: Private tour in the Douro (1 to 4 people) on a boat just for you - 3
Private tasting in the Douro (1 to 7 people) on a yacht for yourself - 4
Transfer from Porto Airport to Porto City Hotels - 5
Douro Valley Private Wine and Food Tour From Porto - 6
Porto City Private Tour with Hotel Pickup - 7
Porto to Lisbon with stop Aveiro-Fátima-Coimbra-Tomar-Nazaré-Óbidos - 8
Private Tour from Porto : Douro Valley and Green Wines - 9
Douro Valley Small Group Tour from Porto: Wineries Lunch & Cruise - 10
Complete Douro Valley Wine Tour with Lunch, Wine Tastings and River Cruise - 11
Douro Valley Small Group Premium Wine Tour Lunch and Private Boat - 12
Douro Valley Premium Small-Group Tour: Wine, Lunch & Cruise - 13
Porto: Douro Small Group Boat Cruise with Port Wine and Snacks - 14
Douro Valley: Historical Sites, Wine Experience, Lunch & Cruise - 15
Port : 7 Bridges Cruise, local wine with Sunset Option - 16
Porto: Douro River Cruise in a small Group With Port Wine - 17
Pastel de Nata | Workshop from scratch | Porto's city center - 18
Braga & Guimarães Small Group Tour with Lunch & Tickets Included - 19
Douro Valley Half-Day Tour with Winery and Lunch From Porto - 20
4 Hour Traditional Portuguese Food and Wine Tour in Porto - 21
Porto : Douro River Cruise with Local Wine Tasting - 22
Porto: Yacht Small-Group Douro River Cruise & 6 Bridges w/ Drink - 23
Port : Charm Cruise 7 Bridges with Port, Sunset option - 24
Tile Painting and Cocktails in Downtown Porto - Cathedral - 25
Porto: Private Yacht Cruise with Local Wine, Snacks and 6 Bridges - 26
Discover Porto & Gaia Highlights by Private Tuk Tuk (2–4H) - 27
Porto PRIVATE TOUR With Locals: Highlights & Hidden Gems - 28
Private Douro Valley Wine Tour: 2 Wine Estates, Lunch and Cruise - 29
Port : Private Yacht Cruise with Local Wine, Snacks & 7 bridges - 30
Porto:Exciting 6 Bridges Speedboat Tour-Small Group and Port Wine
Last refreshed 2026-08-13.
Similar climatesAveiro95% · Braga93% · Coimbra92%
Other destinations with the most-alike year-round climate to Porto (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Porto's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 7–14 | 11 | 11 | 178 | 16.2 | 74% | 22 | 154 | 1 | Quiet | 5 |
| Feb | 9–16 | 13 | 10 | 146 | 14.6 | 71% | 22 | 169 | 2 | Moderate | 6 |
| Mar | 9–16 | 14 | 14 | 204 | 14.6 | 69% | 23 | 204 | 4 | Quiet | 5 |
| Apr | 11–18 | 16 | 12 | 171 | 14.3 | 69% | 21 | 239 | 5 | Quiet | 6 |
| May | 13–20 | 19 | 11 | 133 | 12.1 | 68% | 22 | 276 | 6 | Quiet | 7 |
| Jun | 15–22 | 21 | 9 | 113 | 12.6 | 72% | 20 | 286 | 7 | Moderate | 8 |
| Jul | 16–24 | 25 | 4 | 36 | 9.0 | 65% | 21 | 310 | 8 | Busy | 9 |
| Aug | 16–24 | 24 | 3 | 28 | 9.3 | 67% | 20 | 280 | 7 | Peak | 9 |
| Sep | 16–23 | 23 | 8 | 120 | 15.0 | 66% | 20 | 235 | 5 | Busy | 8 |
| Oct | 14–21 | 20 | 16 | 230 | 14.4 | 74% | 22 | 175 | 3 | Quiet | 6 |
| Nov | 11–17 | 16 | 14 | 188 | 13.4 | 75% | 21 | 152 | 2 | Quiet | 6 |
| Dec | 9–15 | 12 | 16 | 237 | 14.8 | 77% | 23 | 141 | 1 | Quiet | 4 |
UV Index in Porto by Month
UV index in Porto peaks at 8 (very high) in July, dropping to 1 (low) in January. July reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.
Best months in detail
July
9/1016–24°C · 4 rain days (36h) · 310 sun hours · 65% humidity · Busy crowd · UV 8 (very high)
August
9/1016–24°C · 3 rain days (28h) · 280 sun hours · 67% humidity · Peak crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)
September
8/1016–23°C · 8 rain days (120h) · 235 sun hours · 66% humidity · Busy crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 6 (high)
Every month
Show the other 9 months in detail
January
5/107–14°C (feels 11°C) · 11 rain days (178h) · 154 sun hours · 74% humidity · Quiet crowd · UV 1 (low)
February
6/109–16°C (feels 13°C) · 10 rain days (146h) · 169 sun hours · 71% humidity · Moderate crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
March
5/109–16°C (feels 14°C) · 14 rain days (204h) · 204 sun hours · 69% humidity · Quiet crowd · UV 4 (moderate) · sunniest 1 in 10 days reach 6 (moderate)
April
6/1011–18°C (feels 16°C) · 12 rain days (171h) · 239 sun hours · 69% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 8 (high)
May
7/1013–20°C (feels 19°C) · 11 rain days (133h) · 276 sun hours · 68% humidity · Quiet crowd · UV 6 (high) · sunniest 1 in 10 days reach 8 (very high)
June
8/1015–22°C · 9 rain days (113h) · 286 sun hours · 72% humidity · Moderate crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)
October
6/1014–21°C · 16 rain days (230h) · 175 sun hours · 74% humidity · Quiet crowd · UV 3 (moderate) · sunniest 1 in 10 days reach 5 (moderate)
November
6/1011–17°C (feels 16°C) · 14 rain days (188h) · 152 sun hours · 75% humidity · Quiet crowd · UV 2 (low)
December
4/109–15°C (feels 12°C) · 16 rain days (237h) · 141 sun hours · 77% humidity · Quiet crowd · UV 1 (low)
One night in June the whole city goes outside
On the night of 23 June, Porto holds the Festa de São João — one of Europe's largest and least touristic street parties. The entire city goes out. People carry plastic hammers and hit each other gently on the head, a tradition that replaced an older one involving garlic flowers; there are bonfires, grilled sardines, caldo verde, and a midnight fireworks display over the Douro, watched from the Ribeira and from the Gaia quayside beneath the port lodges.
It is not staged for visitors, which is precisely its appeal and also the practical warning: accommodation sells out well in advance, prices rise, and the city does not sleep. The following afternoon the rabelo boat race runs on the river.
Beyond that single date, Porto's climate is Atlantic rather than Mediterranean — wetter and cooler than Lisbon, with a real winter.
Sources: Portugal Confidential — Festas de São João , Visitar Porto — Festa de São João
What is the rainy season in Porto?
November to March, and it is genuinely wet — December averages about 170 mm, and Porto is markedly rainier than Lisbon or the Algarve because it sits on the Atlantic in the path of winter fronts. Summer is dry and mild rather than hot, with August peaking near 26C and July averaging only about 22 mm of rain.
Is 4 days in Porto too much?
No. Two days cover the historic centre and the port lodges across the river in Vila Nova de Gaia; a third gives you the Douro valley by train or boat; and a fourth reaches Guimarães or Braga. Porto rewards a slower pace than its size suggests — it is compact but steep, and the walking is more tiring than the distances imply.
What is the rainiest month in Porto?
December, at around 170 mm — Porto is markedly wetter than southern Portugal, sitting on the Atlantic coast in the path of winter fronts. July is driest at about 22 mm. This is why the city is green year-round and why an umbrella is worth packing outside high summer.
What is the best month to visit Porto?
May, June or September. August peaks near 26C and brings the heaviest crowds, while the shoulder months keep warm, largely dry weather with far more room in the port lodges and along the Ribeira. September also catches the tail of the grape harvest in the Douro.
Which is better, Porto or Lisbon?
Porto is smaller, steeper and more compact, with the port lodges across the river and easy access to the Douro Valley. Lisbon is larger and more varied, with better nightlife and the coast at Cascais and Sintra nearby. Porto suits a long weekend; Lisbon sustains a longer stay.
Is Porto rainy all winter?
Wet rather than relentlessly rainy. December through February carry the bulk of the year's rainfall, but it arrives in bands with bright spells between, and temperatures stay mild with January lows around 6C. Winter is the cheapest season and the port lodges are far quieter.
How many days do you need in Porto?
Three. One for the Ribeira, the São Bento tiles and the bookshops; one for Vila Nova de Gaia and the port lodges across the river; and one for a Douro Valley trip by train or boat, which is what most visitors remember longest. Add a fourth if you want Guimarães or Braga, both under an hour away by train.
What is Porto best known for?
Port wine, which is aged in the lodges across the river at Vila Nova de Gaia and named for the city that shipped it. Beyond that: the tiled façades and the São Bento station hall, the Dom Luís I iron bridge, and the Ribeira waterfront — the whole historic centre is UNESCO-listed.
Is Porto prettier than Lisbon?
Porto is more concentrated — a steep, tiled river gorge where the good views are constant and the centre is small enough to walk. Lisbon is bigger and more varied, with wider vistas and more range in its neighbourhoods. Many visitors find Porto the more immediately photogenic and Lisbon the more rewarding over a longer stay.
What are the top things to do in Porto?
Cross the Dom Luís I bridge on the upper deck for the view, tour a port lodge in Gaia with a tasting, see the São Bento station tiles and the Livraria Lello bookshop, and take a Douro Valley trip by train or boat. Ride tram 1 along the river to Foz for the Atlantic at the river mouth.
Frequently asked questions about visiting Porto
When is the best time to visit Porto?
July is the highest-scoring month (9/10 on the Holiday Climate Index). Typical conditions: 16–24°C (4 rainy days). The top three months by score are July, August, September.
What is the worst time to visit Porto?
December is the lowest-scoring month (4/10). Typical conditions: 9–15°C (16 rainy days).
When are crowds lowest in Porto?
Search-interest seasonality (Google Trends 2021-2025) is lowest in December and peaks in August. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Porto have good weather but fewer tourists?
May (climate 7/10, crowd index 28) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Porto by month?
UV peaks at 8 (very high) in July and is lowest in January at 1 (low). Monthly peak values: Jan 1, Feb 2, Mar 4, Apr 5, May 6, Jun 7, Jul 8, Aug 7, Sep 5, Oct 3, Nov 2, Dec 1. July reach very high or extreme levels — apply SPF 50+, wear a hat and protective clothing, and limit direct sun between 11:00 and 17:00.
What is the UV index in Porto in July?
July is the peak UV month in Porto, with a daily-peak UV index of 8 (very high). At this level, sunburn can occur in under 20 minutes on unprotected fair skin. Apply SPF 50+, wear protective clothing and a hat, and avoid direct midday sun (11:00–17:00).
How high can UV get in Porto on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 7 (high), but the top 10% of days reach UV 9 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: February, March, April, May, June, August, September, October. Plan sun protection for the worst case, not the average.
Is air quality in Porto bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 10 months: January, February, March, April, June, August, September, October, November, December. The worst month is February with a typical-day mean of 15 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 29 µg/m³ (unhealthy) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.