VacationSelector
The Botanical Building, Balboa Park, San Diego
San DiegoThe Botanical Building, Balboa Park
A cobbled street of painted houses in Old San Juan, San Juan
San JuanA cobbled street of painted houses in Old San Juan

Photos: San Diego by Bernard Gagnon, CC BY-SA 3.0, cropped; San Juan by Mohan Nannapaneni, Pexels License.

San Diego 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 San Diego for

  • families
  • day trips
  • wellness

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

Choose San Juan for

  • nightlife
  • culture and sights
  • 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. San Diego 72, San Juan 84: San Juan leads by 12 points.
Food & drink. San Diego 62, San Juan 66: San Juan leads by 4 points.
Culture & sights. San Diego 50, San Juan 64: San Juan leads by 14 points.
Nightlife. San Diego 48, San Juan 70: San Juan leads by 22 points.
Nature & outdoors. San Diego 77, San Juan 74: San Diego leads by 3 points.
Day trips. San Diego 60, San Juan 52: San Diego leads by 8 points.
Good for families. San Diego 96, San Juan 58: San Diego leads by 38 points.
Getting around. San Diego and San Juan are level on 38.
Shopping & style. San Diego 44, San Juan 50: San Juan leads by 6 points.
Affordability. San Diego 26, San Juan 38: San Juan leads by 12 points.
Live music & performing arts. San Diego 56, San Juan 55: San Diego leads by 1 points.
Wellness & relaxation. San Diego 45, San Juan 40: San Diego leads by 5 points.
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What lies behind each score is written up on the two cities’ own pages: San Diego and San Juan.

Your match

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

Too close to call, 1 point apart

San Diego
56match

Wins on families and day trips with your weighting.

San Juan
57match

Wins on nightlife and culture and sights with your weighting.

What matters to you?

When should you go?

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

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

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
San DiegoSan Juan

Temperature and rainfall are climate normals, averaged over the years shown. San Diego: 1991-2020 normals, San Diego International Airport (2.8 km from centre). San Juan: 1991-2020 normals, San Juan / Int., Puerto Rico (12.8 km from centre).

Before you go

MeasureSan DiegoSan Juan
Official language-Spanish, English
CurrencyUS Dollar (USD)US Dollar (USD)
SocketsAB120 V, 60 HzAB120 V, 60 Hz
Driving sideRightRight
Time zoneUTC-8, UTC-7 in summerUTC-4
Emergency number911911
Elevation129 m3 m
Main airportSan Diego International Airport (SAN)3 km from centre87 non-stop destinationsLuis Munoz Marin International Airport (SJU)12 km from centre59 non-stop destinations
Public holidays this year13 days21 days

By the numbers

MeasureSan DiegoSan Juan
City population1,386,932342,259
People per km²1,4382,847
Museums within 10 km2618
UNESCO World Heritage sites within 50 km01
Swim season, months above 21 °C1 month12 months

Where else could you go?

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