VacationSelector
Painted wooden houses under palms in Key West, Key West
Key WestPainted wooden houses under palms in Key West
The cathedral facade, Siena
SienaThe cathedral facade

Photos: Key West by Dominik Gryzbon, Pexels License; Siena by Raimond Spekking, CC BY-SA 4.0, cropped.

Key West or Siena?

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 Key West for

  • beaches
  • nightlife
  • families

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

Choose Siena for

  • day trips
  • culture and sights
  • prices

What lies behind each score is written up on Siena’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. Key West 60, Siena 14: Key West leads by 46 points.
Food & drink. Key West 45, Siena 62: Siena leads by 17 points.
Culture & sights. Key West 40, Siena 78: Siena leads by 38 points.
Nightlife. Key West 62, Siena 27: Key West leads by 35 points.
Nature & outdoors. Key West 62, Siena 65: Siena leads by 3 points.
Day trips. Key West 28, Siena 94: Siena leads by 66 points.
Good for families. Key West 40, Siena 38: Key West leads by 2 points.
Getting around. Key West 62, Siena 60: Key West leads by 2 points.
Shopping & style. Key West 30, Siena 35: Siena leads by 5 points.
Affordability. Key West 15, Siena 42: Siena leads by 27 points.
Live music & performing arts. Key West 38, Siena 36: Key West leads by 2 points.
Wellness & relaxation. Key West 40, Siena 55: Siena leads by 15 points.
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What lies behind each score is written up on the two cities’ own pages: Key West and Siena.

Your match

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

Key West
44match

Wins on beaches and nightlife with your weighting.

Siena
Best match
51match

Wins on day trips 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.

Key West in July

32 °Cdaytime high
27 °Cnight-time low
84 mmrain in the month
30 °Csea
14 hdaylight a day

Siena in July

31 °Cdaytime high
17 °Cnight-time low
27 mmrain in the month
No seasea
15 hdaylight a day

Daytime high, °C

0°10°20°30°40°JFMAMJJASOND

Rainfall in the month, mm

050100150JFMAMJJASOND
Key WestSiena

Where the figures come from

Key West's temperatures are measured 69 km from the centre, at Key West Airport.

Key West 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.

Siena's temperatures are measured 45 km from the centre, at Arezzo.

Siena 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. Key West: 1991-2020 normals, Key West Airport (69.1 km from centre). Siena: 2006-2017 (rainfall 1991-2020) normals, Arezzo (45 km from centre).

Before you go

MeasureKey WestSiena
Official language-Italian
CurrencyUS Dollar (USD)Euro (EUR)
SocketsAB120 V, 60 HzCFL230 V, 50 Hz
Driving sideRightRight
Time zoneUTC-5, UTC-4 in summerUTC+1, UTC+2 in summer
Emergency number911112
Elevation4 m322 m
Main airportKey West International Airport (EYW)2 km from centre24 non-stop destinationsFlorence Airport, Peretola (FLR)55 km from centre46 non-stop destinations
Public holidays this year11 days13 days

By the numbers

MeasureKey WestSiena
City population26,44452,812
People per km²1,407446
Museums within 10 km730
UNESCO World Heritage sites within 50 km05
Swim season, months above 21 °C12 months-

Where else could you go?

Every comparison below shares a destination with this one, so you can follow Key West or Siena 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. Tourism statistics from Eurostat, © European Union, reused under CC BY 4.0. 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.