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Ýdra
City in Attica, Greece
Overview
Ýdra, also known as Hydra, is a car-free island in the Saronic Gulf, renowned for its stone mansions, lively artistic scene, and captivating harbor. With no motor vehicles allowed, donkeys and water taxis are the main forms of transportation, lending the town an old-world Mediterranean charm.
Geographic Context
Jurisdiction
Greece
Administrative Region
Attica
Population
—
Time Zone
Europe/Athens
Coordinates
37.35°, 23.47°
Key Metrics
Safety Score · estimate
92
Female Safety
80
LGBTQ+ Safety
65
Traffic Safety
95
Food Safety
95
Monthly Cost · estimate
$2,275
Local Cost
$1,640
Local Income
$1,050
Cashless
55
English
60
Temperature
19.1°C
Summer Avg
25.8°C
Winter Avg
13.2°C
Record High
38.7°C
Record Low
2.9°C
Humidity
72%
Precipitation
577 mm
Internet Speed
34 Mbps
Upload
4 Mbps
Latency
30 ms
City Vibrancy
—
Coworking
0
Cafes
0
Nightlife
0
Parks
0
Transport
0
Walk Score
0
Footways
—
Airport
PKH
Distance
29 km
Explore
Data sources
Source-backed data
World Air Quality Index - Latest available city-level air quality station measurement. Record updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Record updated 2025-12-09.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Record updated 2025-12-06.
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.
Oyster List city price estimates - Price origins are unverified. Available generation methods include AI estimates; stored records do not identify a survey, observation period, or model for each price. Record updated 2026-01-14.
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores include model-assisted estimates. Stored records do not identify supporting observations for each score. Model-reported confidence: 68/100; this is not a measured accuracy score. Model: derived+gpt-4.1. Record updated 2026-03-26.
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