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San Sebastián

City in Puerto Rico, United States

Overview

San Sebastián is a charming municipality in northwestern Puerto Rico, known for its picturesque river valleys, cultural events, and welcoming community vibe. The town balances rural tranquility with pockets of lively urban activity, making it a great escape for nature and culture lovers.

Geographic Context

Jurisdiction
United States
Outlying Area
Puerto Rico
Population
39,345
Time Zone
America/New_York
Coordinates
18.34°, -66.99°

Key Metrics

Safety Score · estimate
68
Female Safety
65
LGBTQ+ Safety
55
Traffic Safety
70
Food Safety
80
Monthly Cost · estimate
$1,565
Local Cost
$920
Local Income
$1,050
Cashless
50
English
65
Temperature
26.7°C
Summer Avg
27.9°C
Winter Avg
25.4°C
Record High
32.8°C
Record Low
20.7°C
Humidity
78%
Precipitation
1118 mm
Internet Speed
110 Mbps
Upload
68 Mbps
Latency
18 ms
City Vibrancy
9
Coworking
0
Cafes
1
Nightlife
0
Parks
8
Transport
0
Walk Score
0
Footways
—
Airport
MAZ
Distance
19 km

Explore

Cost of Living
Prices & expenses
Weather & Climate
Temperature & conditions
Alternatives
Similar cities worldwide
Compare
Side-by-side comparison
Neighborhoods
1 areas mapped
City Guide
Tips & insights

Neighborhoods

Partial

Coverage is incomplete — additional neighborhoods are being added as more source data is processed.

Residencial Hacienda San Andrés

Coverage is incomplete — more neighborhoods are being added.

View all 1 neighborhoods

Data sources

Source-backed data

World Air Quality Index - Latest available city-level air quality station measurement. Record updated 2025-12-05.
Ookla Open Data - Internet speed aggregates for 2024Q3 from 53 tests. Record updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Record updated 2025-12-06.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Record updated 2025-12-05.
Overture Maps and OpenStreetMap - 1 source-backed neighborhood entities are available for this city. Record updated 2026-03-24.

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: 65/100; this is not a measured accuracy score. Model: derived+gpt-4.1. Record updated 2026-03-26.

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