VacationSelector
Cardiff Castle, Cardiff
CardiffCardiff Castle
The Winchester Mystery House, San Jose
San JoseThe Winchester Mystery House

Photos: Cardiff by Tevfik Teker, CC BY 3.0, cropped; San Jose by Roxanna Salceda, CC BY-SA 2.0, cropped.

Cardiff or San Jose?

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 Cardiff for

  • getting around
  • prices
  • culture and sights

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

Choose San Jose for

  • food and drink
  • families
  • day trips

What lies behind each score is written up on San Jose’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. Cardiff and San Jose are level on 30.
Food & drink. Cardiff 45, San Jose 56: San Jose leads by 11 points.
Culture & sights. Cardiff 58, San Jose 36: Cardiff leads by 22 points.
Nightlife. Cardiff 50, San Jose 33: Cardiff leads by 17 points.
Nature & outdoors. Cardiff 70, San Jose 72: San Jose leads by 2 points.
Day trips. Cardiff 72, San Jose 78: San Jose leads by 6 points.
Good for families. Cardiff 58, San Jose 65: San Jose leads by 7 points.
Getting around. Cardiff 66, San Jose 30: Cardiff leads by 36 points.
Shopping & style. Cardiff 50, San Jose 48: Cardiff leads by 2 points.
Affordability. Cardiff 46, San Jose 20: Cardiff leads by 26 points.
Live music & performing arts. Cardiff 57, San Jose 38: Cardiff leads by 19 points.
Wellness & relaxation. Cardiff 27, San Jose 30: San Jose leads by 3 points.
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What lies behind each score is written up on the two cities’ own pages: Cardiff and San Jose.

Your match

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

Cardiff
Best match
52match

Wins on getting around and prices with your weighting.

San Jose
45match

Wins on food and drink and families with your weighting.

What matters to you?

When should you go?

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

Cardiff in July

20 °Cdaytime high
13 °Cnight-time low
83 mmrain in the month
7 hsunshine a day
17 °Csea
16 hdaylight a day

San Jose in July

27 °Cdaytime high
15 °Cnight-time low
0 mmrain in the month
No recordsunshine a day
14 °Csea
15 hdaylight a day

Daytime high, °C

0°10°20°30°JFMAMJJASOND

Rainfall in the month, mm

050100150JFMAMJJASOND
CardiffSan Jose

Where the figures come from

Cardiff 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.

Cardiff's sunshine is measured 83 km from the centre, at Lyneham.

Temperature and rainfall are climate normals, averaged over the years shown. Cardiff: 1991-2020 normals, Cardiff-Wales Airport (14.9 km from centre). San Jose: 1991-2020 normals, San Jose / Santa Clara Trailer Village (8.2 km from centre).

Before you go

MeasureCardiffSan Jose
Official languageEnglish-
CurrencyPound Sterling (GBP)US Dollar (USD)
SocketsG230 V, 50 HzAB120 V, 60 Hz
Driving sideLeftRight
Time zoneUTC, UTC+1 in summerUTC-8, UTC-7 in summer
Emergency number112 or 999911
Elevation41 m25 m
Main airportCardiff International Airport (CWL)15 km from centre30 non-stop destinationsMineta San Jose International Airport (SJC)8 km from centre38 non-stop destinations
Public holidays this year8 days13 days

By the numbers

MeasureCardiffSan Jose
City population383,5361,013,240
People per km²2,7342,167
Museums within 10 km919
UNESCO World Heritage sites within 50 km10
Swim season, months above 21 °CNoneNone

Where else could you go?

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