VacationSelector
Rabelo boats on the Douro and the Ribeira, Porto
PortoRabelo boats on the Douro and the Ribeira
The Botanical Building, Balboa Park, San Diego
San DiegoThe Botanical Building, Balboa Park

Photos: Porto by Jakub Hałun, CC BY 4.0, cropped; San Diego by Bernard Gagnon, CC BY-SA 3.0, cropped.

Porto or San Diego?

Our verdict in twelve categories, each scored against the same fixed benchmark cities, and the climate month by month, so you can choose for your trip.

Choose Porto for

  • prices
  • getting around
  • day trips

What lies behind each score is written up on Porto’s own page.

Choose San Diego for

  • families
  • beaches
  • nature and the outdoors

What lies behind each score is written up on San Diego’s own page.

Scoreboard

Twelve categories on one fixed scale from 0 to 100. The shaded stretch is the gap between the two.

Beaches & swimming. Porto 40, San Diego 72: San Diego leads by 32 points.
Food & drink. Porto 70, San Diego 62: Porto leads by 8 points.
Culture & sights. Porto 68, San Diego 50: Porto leads by 18 points.
Nightlife. Porto 65, San Diego 48: Porto leads by 17 points.
Nature & outdoors. Porto 64, San Diego 77: San Diego leads by 13 points.
Day trips. Porto 79, San Diego 60: Porto leads by 19 points.
Good for families. Porto 52, San Diego 96: San Diego leads by 44 points.
Getting around. Porto 66, San Diego 38: Porto leads by 28 points.
Shopping & style. Porto 52, San Diego 44: Porto leads by 8 points.
Affordability. Porto 62, San Diego 26: Porto leads by 36 points.
Live music & performing arts. Porto 52, San Diego 56: San Diego leads by 4 points.
Wellness & relaxation. Porto 34, San Diego 45: San Diego leads by 11 points.
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What lies behind each score is written up on the two cities’ own pages: Porto and San Diego.

Your match

Pick a travel style or drag the sliders, and both match scores follow your weighting.

Porto
Best match
59match

Wins on prices and getting around with your weighting.

San Diego
56match

Wins on families and beaches with your weighting.

What matters to you?

When should you go?

Pick your month. The climate figures are measured averages, not a forecast.

Porto in July

25 °Cdaytime high
16 °Cnight-time low
22 mmrain in the month
10 hsunshine a day
17 °Csea
15 hdaylight a day

San Diego in July

24 °Cdaytime high
19 °Cnight-time low
2 mmrain in the month
No recordsunshine a day
20 °Csea
14 hdaylight a day

Daytime high, °C

0°10°20°30°JFMAMJJASOND

Rainfall in the month, mm

050100150200JFMAMJJASOND
PortoSan Diego

Temperature and rainfall are climate normals, averaged over the years shown. Porto: 1991-2020 normals, Porto / Serra Do Pilar (2.1 km from centre). San Diego: 1991-2020 normals, San Diego International Airport (2.8 km from centre).

Before you go

MeasurePortoSan Diego
Official languagePortuguese-
CurrencyEuro (EUR)US Dollar (USD)
SocketsCF230 V, 50 HzAB120 V, 60 Hz
Driving sideRightRight
Time zoneUTC, UTC+1 in summerUTC-8, UTC-7 in summer
Emergency number112911
Elevation104 m129 m
Main airportFrancisco de Sá Carneiro Airport (OPO)12 km from centre134 non-stop destinationsSan Diego International Airport (SAN)3 km from centre87 non-stop destinations
Public holidays this year14 days13 days

By the numbers

MeasurePortoSan Diego
City population273,4761,386,932
People per km²6,6061,438
Museums within 10 km4226
UNESCO World Heritage sites within 50 km30
Swim season, months above 21 °CNone1 month

Where else could you go?

Every comparison below shares a destination with this one, so you can follow Porto or San Diego somewhere new.

Browse every destination

Sources

Structured data from Wikidata (CC0). Weather data by Meteostat. Meteorological data provided by NOAA, DWD and others. Rainfall where no rain gauge is within 25 km is from the TerraClimate 1991-2020 climatology (Abatzoglou et al. 2018, Scientific Data), read at the city. Sea surface temperature from NOAA OISST v2.1, NOAA Physical Sciences Laboratory. Airport data from OurAirports (public domain). Tourism statistics from Eurostat, © European Union, reused under CC BY 4.0. Public holidays from Nager.Date (MIT). Non-stop route lists from the "Airlines and destinations" tables on English Wikipedia airport articles, by Wikipedia contributors, reused under CC BY-SA 4.0. Currency from the ISO 4217 register maintained by SIX, cross-checked against country data from GeoNames (CC BY 4.0). Price level from World Bank open data (PPP conversion factor for private consumption and official exchange rate), CC BY 4.0. Time zones from GeoNames (CC BY 4.0); clock offsets computed from the IANA time zone database. Exchange rates via Frankfurter, based on European Central Bank reference rates. Daylight hours computed from each destination's latitude using the NOAA solar position algorithm.

Category scores are our editorial verdict under rubric v3, each placed against the same fixed benchmark cities; the climate figures are measured. How the scores are set. Snapshot generated 2026-10-31. Daily budgets are estimates from country price levels.