VacationSelector
The Aare at Unterseen, Interlaken, Interlaken
InterlakenThe Aare at Unterseen, Interlaken
A cobbled street of painted houses in Old San Juan, San Juan
San JuanA cobbled street of painted houses in Old San Juan

Photos: Interlaken by Roy Egloff, CC BY-SA 4.0, cropped; San Juan by Mohan Nannapaneni, Pexels License.

Interlaken or San Juan?

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 Interlaken for

  • getting around
  • day trips
  • nature and the outdoors

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

Choose San Juan for

  • culture and sights
  • nightlife
  • beaches

What lies behind each score is written up on San Juan’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. Interlaken 30, San Juan 84: San Juan leads by 54 points.
Food & drink. Interlaken 25, San Juan 66: San Juan leads by 41 points.
Culture & sights. Interlaken 8, San Juan 64: San Juan leads by 56 points.
Nightlife. Interlaken 15, San Juan 70: San Juan leads by 55 points.
Nature & outdoors. Interlaken 97, San Juan 74: Interlaken leads by 23 points.
Day trips. Interlaken 78, San Juan 52: Interlaken leads by 26 points.
Good for families. Interlaken 72, San Juan 58: Interlaken leads by 14 points.
Getting around. Interlaken 80, San Juan 38: Interlaken leads by 42 points.
Shopping & style. Interlaken 22, San Juan 50: San Juan leads by 28 points.
Affordability. Interlaken 8, San Juan 38: San Juan leads by 30 points.
Live music & performing arts. Interlaken 15, San Juan 55: San Juan leads by 40 points.
Wellness & relaxation. Interlaken and San Juan are level on 40.
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What lies behind each score is written up on the two cities’ own pages: Interlaken and San Juan.

Your match

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

Interlaken
41match

Wins on getting around and day trips with your weighting.

San Juan
Best match
57match

Wins on culture and sights and nightlife with your weighting.

What matters to you?

When should you go?

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

Interlaken in July

24 °Cdaytime high
14 °Cnight-time low
126 mmrain in the month
No recordsunshine a day
No seasea
15 hdaylight a day

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

Daytime high, °C

0°10°20°30°40°JFMAMJJASOND

Rainfall in the month, mm

050100150200JFMAMJJASOND
InterlakenSan Juan

Where the figures come from

Interlaken has no rain gauge within 25 km of the centre, so its rainfall comes from a gridded climate dataset read at the city rather than from a gauge further away.

Temperature and rainfall are climate normals, averaged over the years shown. Interlaken: 2005-2020 (rainfall 1991-2020) normals, Meiringen / Unterbach (19.3 km from centre). San Juan: 1991-2020 normals, San Juan / Int., Puerto Rico (12.8 km from centre).

Before you go

MeasureInterlakenSan Juan
Official languageFrench, German, Italian, RomanshSpanish, English
CurrencySwiss Franc (CHF)US Dollar (USD)
SocketsCJ230 V, 50 HzAB120 V, 60 Hz
Driving sideRightRight
Time zoneUTC+1, UTC+2 in summerUTC-4
Emergency number112911
Elevation571 m3 m
Main airportZürich Airport (ZRH)100 km from centre226 non-stop destinationsLuis Munoz Marin International Airport (SJU)12 km from centre59 non-stop destinations
Public holidays this year10 days21 days

By the numbers

MeasureInterlakenSan Juan
City population6,123342,259
People per km²1,4242,847
Museums within 10 km318
UNESCO World Heritage sites within 50 km21
Swim season, months above 21 °C-12 months

Where else could you go?

Every comparison below shares a destination with this one, so you can follow Interlaken or San Juan 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. Airport data from OurAirports (public domain). Tourism statistics from Eurostat, © European Union, reused under CC BY 4.0. 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. Sea surface temperature from NOAA OISST v2.1, NOAA Physical Sciences Laboratory. 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.