Photos: Cardiff by Tevfik Teker, CC BY 3.0, cropped; Rio de Janeiro by Arne Müseler, CC BY-SA 3.0 DE, cropped.
Cardiff or Rio de Janeiro?
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
- day trips
- getting around
- families
What lies behind each score is written up on Cardiff’s own page.
Choose Rio de Janeiro for
- beaches
- nightlife
- nature and the outdoors
What lies behind each score is written up on Rio de Janeiro’s own page.
Scoreboard
Twelve categories on one fixed scale from 0 to 100. The shaded stretch is the gap between the two.
What lies behind each score is written up on the two cities’ own pages: Cardiff and Rio de Janeiro.
Your match
Pick a travel style or drag the sliders, and both match scores follow your weighting.
Wins on day trips and getting around with your weighting.
Wins on beaches 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.
Cardiff in July
Rio de Janeiro in July
Daytime high, °C
Rainfall in the month, mm
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.
Rio de Janeiro has no weather station within reach, so its figures come from a gridded climate model rather than a measured record, and read a broad area rather than the city itself.
Temperature and rainfall are climate normals, averaged over the years shown. Cardiff: 1991-2020 normals, Cardiff-Wales Airport (14.9 km from centre). Rio de Janeiro: 2001-2020 normals, NASA POWER reanalysis grid, no weather station within 90 km.
Before you go
| Measure | Cardiff | Rio de Janeiro |
|---|---|---|
| Official language | English | Portuguese |
| Currency | Pound Sterling (GBP) | Brazilian Real (BRL) |
| Sockets | G230 V, 50 Hz | CN60 Hz |
| Driving side | Left | Right |
| Time zone | UTC, UTC+1 in summer | UTC-3 |
| Emergency number | 112 or 999 | Police 190, ambulance 192, fire 193 |
| Elevation | 41 m | 31 m |
| Main airport | Cardiff International Airport (CWL)15 km from centre30 non-stop destinations | Rio de Janeiro Galeão – Tom Jobim International Airport (GIG)12 km from centre54 non-stop destinations |
| Public holidays this year | 8 days | 14 days |
By the numbers
| Measure | Cardiff | Rio de Janeiro |
|---|---|---|
| City population | 383,536 | 6,211,223 |
| People per km² | 2,734 | 4,930 |
| Museums within 10 km | 9 | 69 |
| UNESCO World Heritage sites within 50 km | 1 | 3 |
| Swim season, months above 21 °C | None | 12 months |
Where else could you go?
Every comparison below shares a destination with this one, so you can follow Cardiff or Rio de Janeiro somewhere new.