VacationSelector
Titanic Belfast, Belfast
BelfastTitanic Belfast
The Botanical Building, Balboa Park, San Diego
San DiegoThe Botanical Building, Balboa Park

Photos: Belfast by Nico Kaiser, CC BY 2.0, cropped; San Diego by Bernard Gagnon, CC BY-SA 3.0, cropped.

Belfast 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 Belfast for

  • getting around
  • prices
  • day trips

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

Choose San Diego for

  • beaches
  • families
  • wellness

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. Belfast 20, San Diego 72: San Diego leads by 52 points.
Food & drink. Belfast 50, San Diego 62: San Diego leads by 12 points.
Culture & sights. Belfast 55, San Diego 50: Belfast leads by 5 points.
Nightlife. Belfast 50, San Diego 48: Belfast leads by 2 points.
Nature & outdoors. Belfast 74, San Diego 77: San Diego leads by 3 points.
Day trips. Belfast 66, San Diego 60: Belfast leads by 6 points.
Good for families. Belfast 58, San Diego 96: San Diego leads by 38 points.
Getting around. Belfast 62, San Diego 38: Belfast leads by 24 points.
Shopping & style. Belfast 45, San Diego 44: Belfast leads by 1 points.
Affordability. Belfast 48, San Diego 26: Belfast leads by 22 points.
Live music & performing arts. Belfast 55, San Diego 56: San Diego leads by 1 points.
Wellness & relaxation. Belfast 25, San Diego 45: San Diego leads by 20 points.
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What lies behind each score is written up on the two cities’ own pages: Belfast and San Diego.

Your match

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

Belfast
51match

Wins on getting around and prices with your weighting.

San Diego
Best match
56match

Wins on beaches 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.

Belfast in July

19 °Cdaytime high
12 °Cnight-time low
74 mmrain in the month
5 hsunshine a day
12 °Csea
17 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°5°10°15°20°25°JFMAMJJASOND

Rainfall in the month, mm

020406080100JFMAMJJASOND
BelfastSan Diego

Temperature and rainfall are climate normals, averaged over the years shown. Belfast: 1991-2020 normals, Belfast / Aldergrove Airport (19.4 km from centre). San Diego: 1991-2020 normals, San Diego International Airport (2.8 km from centre).

Before you go

MeasureBelfastSan Diego
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
Elevation3 m129 m
Main airportGeorge Best Belfast City Airport (BHD)4 km from centre25 non-stop destinationsSan Diego International Airport (SAN)3 km from centre87 non-stop destinations
Public holidays this year10 days13 days

By the numbers

MeasureBelfastSan Diego
City population345,0061,386,932
People per km²3,0001,438
Museums within 10 km826
UNESCO World Heritage sites within 50 km10
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 Belfast 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). 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.