Data sources
INE, Statistics Portugal
CC BY 4.0. Fetched .
- What we take
- Monthly overnight stays per municipality (indicator 0010735).
- How we use it
- Average of each calendar month over 2023-2025, divided by the busiest month. That is the crowd index.
NASA POWER
Open, attribution required. Fetched .
- What we take
- Monthly climatology per city point: mean air temperature at 2 m and rainfall.
- How we use it
- Mean temperature, not the daily maximum. Comfort = temperature fit (17-24 °C best) x dryness.
Eurostat price level indices
CC BY 4.0. Fetched .
- What we take
- Price level of restaurants and hotels, EU27 = 100, latest year.
- How we use it
- Shown as the published index. Used for country comparison only, never as a city price.
Inside Airbnb
CC BY 4.0. Fetched .
- What we take
- Listed nightly prices in Porto city parishes, snapshot 2026-06-23.
- How we use it
- Median and quartiles per room type. These are Airbnb-style listings, not hotel rates.
Metro do Porto fares
Public price list, figures only. Fetched .
- What we take
- Official single, 24-hour and tour ticket prices.
- How we use it
- Read from the official page with a dated screenshot per price. No text copied.
Diário da República (DRE)
Official act, paraphrased. Fetched .
- What we take
- Article 135 of Decreto-Lei 10/2015: price lists and the couvert.
- How we use it
- Read in the act and in its consolidated version. Explained in plain English, not legal advice.
Sources per guide
eSIM for Portugal: Airalo and Yesim side by side
- Airalo, Portugal eSIM page. Public web page, facts only. Fetched 2026-10-01.
- Yesim, Portugal eSIM page. Public web page, facts only. Fetched 2026-10-01.
Porto menu decoder: what the words mean and what you can be charged
- Diário da República, Decreto-Lei n.º 10/2015. Official act, paraphrased here. Fetched 2026-09-30.
Portugal in March: Weather in 10 Cities, Ranked
- NASA POWER, monthly climatology (mean temperature, rain). NASA POWER data use policy (open, attribution required). Fetched 2026-09-30.
- NASA POWER, daily data 2015-2024 (daytime high, night low). NASA POWER data use policy (open, attribution required). Fetched 2026-10-01.
- NASA POWER methodology page (grid size). NASA POWER data use policy (open, attribution required). Fetched 2026-10-01.
- INE, Statistics Portugal, overnight stays (indicator 0010735). CC BY 4.0. Fetched 2026-09-30.
Things to do in Porto: the big sights and what they cost
- Palacio da Bolsa ticket page (Porto and North official booking). Public price list, figures only. Fetched 2026-09-30.
- Torre dos Clerigos ticket office. Public price list, figures only. Fetched 2026-09-30.
- Livraria Lello tickets. Public price list, figures only. Fetched 2026-09-30.
What a trip to Porto costs
- Inside Airbnb, Porto. CC BY 4.0. Fetched 2026-09-30.
- Metro do Porto fares. Public price list, figures only. Fetched 2026-09-30.
- Palacio da Bolsa ticket price (Porto and North official booking). Public price list, figures only. Fetched 2026-09-30.
- Torre dos Clerigos ticket office. Public price list, figures only. Fetched 2026-09-30.
- Livraria Lello ticket shop. Public price list, figures only. Fetched 2026-09-30.
- Lado B Cafe menu. Public price list, figures only. Fetched 2026-09-30.
- Casa Guedes Tradicional menu. Public price list, figures only. Fetched 2026-09-30.
- Cafe Majestic menu. Public price list, figures only. Fetched 2026-09-30.
- Eurostat price level indices. CC BY 4.0. Fetched 2026-09-30.
Where to stay in Porto: what a night costs in each parish
- Inside Airbnb, Porto. CC BY 4.0. Fetched 2026-09-30.