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Boulogne-sur-Mer
City in Hauts-de-France, France
Overview
Boulogne-sur-Mer is a historic seaside city on France's northern coast, famed for its medieval ramparts, busy fishing port, and France's largest public aquarium, Nausicaá. With a rich maritime heritage and charming old town, it offers a blend of history, culture, and fresh seafood cuisine.
Geographic Context
Jurisdiction
France
Metropolitan Region
Hauts-de-France
Population
41,039
Time Zone
Europe/Paris
Coordinates
50.73°, 1.61°
Key Metrics
Safety Score
78
Female Safety
72
LGBTQ+ Safety
75
Traffic Safety
85
Food Safety
97
Monthly Cost
$1,805
Local Cost
$1,130
Local Income
$1,650
Cashless
70
English
55
Temperature
10.2°C
Summer Avg
16.5°C
Winter Avg
4.1°C
Record High
33.6°C
Record Low
-10.6°C
Humidity
86%
Precipitation
821 mm
Internet Speed
153 Mbps
Upload
118 Mbps
Latency
12 ms
City Vibrancy
78
Coworking
0
Cafes
24
Nightlife
36
Parks
18
Transport
0
Walk Score
0
Footways
—
Airport
LTQ
Distance
23 km
Explore
Neighborhoods
EstimatedNeighborhood highlights with vibe, safety, and cost profiles.
View featured neighborhoodsFrequently Asked Questions
Data sources
Source-backed data
NASA POWER - Climate normals and monthly weather measurements rendered as city weather metrics. Updated 2026-03-22.
World Air Quality Index - Latest available city-level air quality station measurement. Updated 2025-12-05.
Ookla Open Data - Internet speed aggregates for 2024Q3 from 15 tests. Updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Updated 2025-12-06.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Updated 2025-12-05.
Oyster List city price model - City price estimates calibrated from local price surveys and jurisdiction-level cost signals. Updated 2026-01-14.
Estimated data
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores are model-assisted estimates derived from source-backed country and city signals. Confidence 70/100.
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