Biarritz
France · Europe
The water
110 mg/LModerate
Source: Ministere de la Sante, SISE-Eaux via Hub'Eau API (reseau BIARRITZ-BIDART) · Official figure. Hardness counts dissolved calcium and magnesium in the water; it is the number your hair meets in the shower.
What moderate water does to hair
The comfortable middle. Most routines work unchanged; a clarifying wash now and then keeps shine.
The washing routine for Biarritz
Your usual routine holds here, with one addition: a chelating (detox) wash roughly every eighth wash keeps the gentle build-up from accumulating. Condition as normal after every wash.
Climate, from recent records (Open-Meteo, ERA5 2015-2024): August is the warmest month, averaging 25°C by day, and humidity peaks in June at about 81% on average. In the humid months, frizz is the main event; anti-humidity styling matters more than wash frequency.
Local note: 2026 readings climb through the year, from 88-110 mg/L in winter to 126-141 mg/L in summer.
Plugs and power for your tools
Sockets: Type C and E. Supply: 230 V, 50 Hz.
Full sockets by the sink are standard (kept outside the 60 cm splash zones around the bath and shower, and RCD protected, under the IEC 60364 zone rules).
A 120 V only dryer or styler (North American) will burn out on this supply, and a plug adapter does not change voltage. Check the label for dual voltage (100-240 V) before you plug in.
Plug, voltage and frequency: IEC World Plugs and national standards.
Plan Biarritz properly
The trip planner turns this water profile into a wash plan for your hair type, a chosen kit and a packing list, month by month.