VacationSelector
The Outback, with the Tenmile Range in the distance, Keystone
KeystoneThe Outback, with the Tenmile Range in the distance
The Casino de Monte-Carlo, Monaco
MonacoThe Casino de Monte-Carlo

Photos: Keystone by Rudi Riet, CC BY-SA 2.0, cropped; Monaco by otterboris, CC BY 3.0, cropped.

Keystone or Monaco?

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 Keystone for

  • nature and the outdoors
  • prices
  • families

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

Choose Monaco for

  • beaches
  • culture and sights
  • live music and the arts

What lies behind each score is written up on Monaco’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. Keystone 5, Monaco 68: Monaco leads by 63 points.
Food & drink. Keystone 27, Monaco 57: Monaco leads by 30 points.
Culture & sights. Keystone 7, Monaco 55: Monaco leads by 48 points.
Nightlife. Keystone 12, Monaco 48: Monaco leads by 36 points.
Nature & outdoors. Keystone 93, Monaco 70: Keystone leads by 23 points.
Day trips. Keystone 55, Monaco 84: Monaco leads by 29 points.
Good for families. Keystone 66, Monaco 60: Keystone leads by 6 points.
Getting around. Keystone 50, Monaco 78: Monaco leads by 28 points.
Shopping & style. Keystone 22, Monaco 52: Monaco leads by 30 points.
Affordability. Keystone 12, Monaco 3: Keystone leads by 9 points.
Live music & performing arts. Keystone 22, Monaco 63: Monaco leads by 41 points.
Wellness & relaxation. Keystone 32, Monaco 55: Monaco leads by 23 points.
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What lies behind each score is written up on the two cities’ own pages: Keystone and Monaco.

Your match

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

Keystone
34match

Wins on nature and the outdoors and prices with your weighting.

Monaco
Best match
58match

Wins on beaches 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.

Keystone in July

21 °Cdaytime high
5 °Cnight-time low
39 mmrain in the month
No recordsunshine a day
No seasea
15 hdaylight a day

Monaco in July

28 °Cdaytime high
21 °Cnight-time low
13 mmrain in the month
11 hsunshine a day
24 °Csea
15 hdaylight a day

Daytime high, °C

-10°0°10°20°30°JFMAMJJASOND

Rainfall in the month, mm

050100150JFMAMJJASOND
KeystoneMonaco

Where the figures come from

Keystone's temperatures are measured 51 km from the centre, at Leadville / Stringtown.

Keystone's station stands 232 m above the city centre, so the centre is likely a little warmer than the figures say.

Keystone 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. Keystone: 2006-2020 (rainfall 1991-2020) normals, Leadville / Stringtown (50.8 km from centre). Monaco: 1991-2020 normals, Nice (19.9 km from centre).

Before you go

MeasureKeystoneMonaco
Official language-French
CurrencyUS Dollar (USD)Euro (EUR)
SocketsAB120 V, 60 HzCEF230 V, 50 Hz
Driving sideRightRight
Time zoneUTC-7, UTC-6 in summerUTC+1, UTC+2 in summer
Emergency number911112
Elevation2,796 m68 m
Main airportDenver International Airport (DEN)116 km from centre231 non-stop destinationsNice-Côte d'Azur Airport (NCE)18 km from centre130 non-stop destinations
Public holidays this year12 days12 days

By the numbers

MeasureKeystoneMonaco
City population1,36938,857
People per km²1318,503
Museums within 10 km014
UNESCO World Heritage sites within 50 km02
Swim season, months above 21 °C-4 months

Where else could you go?

Every comparison below shares a destination with this one, so you can follow Keystone or Monaco 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). 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. Ground elevations sampled from the Mapzen terrain tiles via OpenTopoData, merging SRTM, ASTER, NED, EU-DEM and national sources. 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 2026-11-02. Daily budgets are estimates from country price levels.