VacationSelector
A cobbled street of painted houses in Old San Juan, San Juan
San JuanA cobbled street of painted houses in Old San Juan
Hanok houses in Bukchon, Seoul
SeoulHanok houses in Bukchon

Photos: San Juan by Mohan Nannapaneni, Pexels License; Seoul by 거열 박, Pexels License.

San Juan or Seoul?

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 San Juan for

  • beaches

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

Choose Seoul for

  • getting around
  • shopping
  • wellness

What lies behind each score is written up on Seoul’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. San Juan 84, Seoul 18: San Juan leads by 66 points.
Food & drink. San Juan 66, Seoul 84: Seoul leads by 18 points.
Culture & sights. San Juan 64, Seoul 75: Seoul leads by 11 points.
Nightlife. San Juan 70, Seoul 84: Seoul leads by 14 points.
Nature & outdoors. San Juan 74, Seoul 75: Seoul leads by 1 points.
Day trips. San Juan 52, Seoul 77: Seoul leads by 25 points.
Good for families. San Juan 58, Seoul 80: Seoul leads by 22 points.
Getting around. San Juan 38, Seoul 87: Seoul leads by 49 points.
Shopping & style. San Juan 50, Seoul 85: Seoul leads by 35 points.
Affordability. San Juan 38, Seoul 50: Seoul leads by 12 points.
Live music & performing arts. San Juan 55, Seoul 63: Seoul leads by 8 points.
Wellness & relaxation. San Juan 40, Seoul 75: Seoul leads by 35 points.
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What lies behind each score is written up on the two cities’ own pages: San Juan and Seoul.

Your match

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

San Juan
57match

Wins on beaches with your weighting.

Seoul
Best match
71match

Wins on getting around and shopping with your weighting.

What matters to you?

When should you go?

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

San Juan in July

32 °Cdaytime high
25 °Cnight-time low
153 mmrain in the month
9 hsunshine a day
28 °Csea
13 hdaylight a day

Seoul in July

29 °Cdaytime high
22 °Cnight-time low
422 mmrain in the month
4 hsunshine a day
21 °Csea
15 hdaylight a day

Daytime high, °C

0°10°20°30°40°JFMAMJJASOND

Rainfall in the month, mm

0100200300400500JFMAMJJASOND
San JuanSeoul

Temperature and rainfall are climate normals, averaged over the years shown. San Juan: 1991-2020 normals, San Juan / Int., Puerto Rico (12.8 km from centre). Seoul: 1991-2020 normals, Seoul (2.2 km from centre).

Before you go

MeasureSan JuanSeoul
Official languageSpanish, EnglishKorean, Korean Sign Language
CurrencyUS Dollar (USD)Won (KRW)
SocketsAB120 V, 60 HzCF220 V, 60 Hz
Driving sideRightRight
Time zoneUTC-4UTC+9
Emergency number911Police 112, ambulance 119, fire 119
Elevation3 m38 m
Main airportLuis Munoz Marin International Airport (SJU)12 km from centre59 non-stop destinationsIncheon International Airport (ICN)49 km from centre162 non-stop destinations
Public holidays this year21 days18 days

By the numbers

MeasureSan JuanSeoul
City population342,2599,668,465
People per km²2,84715,973
Museums within 10 km1881
UNESCO World Heritage sites within 50 km15
Swim season, months above 21 °C12 months2 months

Where else could you go?

Every comparison below shares a destination with this one, so you can follow San Juan or Seoul 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). Public holidays from Nager.Date (MIT). Exchange rates via Frankfurter, based on European Central Bank reference rates. 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. 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.