Crossing guide
What the Bilbao to Portsmouth crossing is like
Published return timings commonly run from about 29 hours 30 minutes to 32 hours 45 minutes. The E-Flexer assigned to a particular departure can change, so verify pet accommodation and cabin details against the live booking. The one-night return has a different rhythm from the two-night outward journey.
Leaving Bilbao
The Bilbao terminal is at Zierbena, around 21 kilometres from the city centre, so navigation should target the port rather than Bilbao itself. Brittany Ferries asks pet travellers to check in at least 90 minutes early, and dogs must stay on a lead in the port. The exposed harbour setting can feel very different from inland conditions.
Before you join the lanes
- Allow more than the sat-nav drive time — port approaches and check-in cut-offs are not motorway estimates.
- Check the booking confirmation for the final vehicle and foot-passenger deadlines; pet travellers often have an earlier one.
- Photograph or download the booking before you travel, because reception in a port queue is unreliable.
- Pack one small bag with medicines, chargers, a change of clothes and dog supplies: car-deck access is normally restricted at sea.
- Save the onward address offline and check whether tolls, low-emission zones or local driving rules affect the road ahead.
The passage
The working duration is typically about 29½–33 hours and one night. Conditions at the bay of Biscay passage can differ sharply from either harbour, which is why this guide samples three points rather than one coastal icon — a moderate wave with a long swell period feels quite different from short, steep seas. If anyone aboard is prone to seasickness, prepare before departure and choose a cabin position with comfort in mind.
A resilient plan
Navigate to Zierbena with time for the earlier pet check-in, then plan one night aboard and a potentially long UK road leg. Forecasts at the Basque harbour, mid-Biscay and Portsmouth reveal change along the passage but never decide whether the ship sails. Tie the dog’s treatment timing to the booked arrival. When alerted, confirm the result says Bilbao to Portsmouth before purchasing.
Conditions
Weather along the route
Departure
Bilbao departure
- Air / sea
- 16.1°C / 22.9°C
- Wind / gust
- 3.7 kn / 4.1 kn
- Wind direction
- SSE (148°)
- Wave / period
- 0.8 m / 6.9 s
- Wave direction
- NNW (330°)
Mid
Bay of Biscay passage
- Air / sea
- 18.2°C / 19.6°C
- Wind / gust
- 5.3 kn / 6.8 kn
- Wind direction
- W (278°)
- Wave / period
- 0.7 m / 7.2 s
- Wave direction
- WNW (282°)
Arrival
Portsmouth arrival
- Air / sea
- 17.5°C / 20.2°C
- Wind / gust
- 5.6 kn / 11.5 kn
- Wind direction
- SW (228°)
- Wave / period
- 0.3 m / 3.0 s
- Wave direction
- SW (227°)
Provider data: Open-Meteo (licence); units and three-point presentation normalised by SailSoon.
For planning context only — not for navigation or decisions about whether a sailing will operate. Check Brittany Ferries for official sailing status.
Seven-day passage outlook
| Day | Sea state | Wave | Wind | Gust | Air |
|---|---|---|---|---|---|
| Wed2 SepToday | Slight | 1.0 m | 12.6 kn | 26.4 kn | 23°C |
| Thu3 Sep | Slight | 1.1 m | 11.3 kn | 23.1 kn | 24°C |
| Fri4 Sep | Moderate | 1.4 m | 14.8 kn | 28.0 kn | 34°C |
| Sat5 Sep | Moderate | 1.7 m | 15.6 kn | 18.7 kn | 28°C |
| Sun6 Sep | Moderate | 1.6 m | 16.4 kn | 28.4 kn | 27°C |
| Mon7 Sep | Moderate | 1.8 m | 17.2 kn | 23.7 kn | 24°C |
| Tue8 Sep | Moderate | 2.3 m | 25.8 kn | 46.7 kn | 24°C |
Daily maxima for planning only — not a forecast for any particular sailing, and not a statement about whether a crossing will operate.
Availability
Recently seen cabins
Historical cabin sighting
24 October 2026 · 13:00
Pet-friendly cabin · Pet-friendly 4 berth outside cabin
Ship shown when seen: Galicia
Observed fare: £158
Observed by SailSoon on 26 August 2026 at 14:04 UTC.
Historical sighting—availability and price may have changed.
Check current availability with the operatorHistorical cabin sighting
10 October 2026 · 13:00
Pet-friendly cabin · Pet-friendly 4 berth outside cabin
Ship shown when seen: Galicia
Observed fare: £158
Observed by SailSoon on 25 August 2026 at 20:05 UTC.
Historical sighting—availability and price may have changed.
Check current availability with the operatorHistorical cabin sighting
13 October 2026 · 13:00
Pet-friendly cabin · Pet-friendly 4 berth inside cabin
Ship shown when seen: Galicia
Observed fare: £158
Observed by SailSoon on 21 August 2026 at 20:05 UTC.
Historical sighting—availability and price may have changed.
Check current availability with the operatorHistorical cabin sighting
5 September 2026 · 13:00
Pet-friendly cabin · Pet-friendly 4 berth inside cabin
Ship shown when seen: Galicia
Observed fare: £359
Observed by SailSoon on 19 August 2026 at 14:05 UTC.
Historical sighting—availability and price may have changed.
Check current availability with the operatorHistorical cabin sighting
2 December 2026 · 18:01
Kennel
Ship shown when seen: Santona
Observed fare: £330
Observed by SailSoon on 19 August 2026 at 12:05 UTC.
Historical sighting—availability and price may have changed.
Check current availability with the operatorHistorical cabin sighting
15 September 2026 · 13:00
Pet-friendly cabin · Pet-friendly 4 berth inside cabin
Ship shown when seen: Galicia
Observed fare: £316
Observed by SailSoon on 19 August 2026 at 00:05 UTC.
Historical sighting—availability and price may have changed.
Check current availability with the operatorRecent sighting reserved for alerts
Members receive the useful details before a delayed historical example can appear here.
Create an account for member-first alertsRecent sighting reserved for alerts
Members receive the useful details before a delayed historical example can appear here.
Create an account for member-first alertsSeasonal context
Typical conditions through the year
1991–2020 averages — not a forecast. Long-term conditions provide planning context; a particular crossing can be very different.
Departure Bilbao departure
| Month | Air °C | Wind mean / p90 kn | Prevailing wind | Wave mean / p90 m | Period s | Prevailing wave |
|---|---|---|---|---|---|---|
| January | 9.8 | 7.4 / 13.0 | SW (220°) | 2.1 / 3.5 | 10.2 | NW (312°) |
| February | 9.9 | 7.1 / 12.6 | WSW (239°) | 2.0 / 3.3 | 10.1 | NW (314°) |
| March | 11.7 | 6.7 / 12.0 | WSW (246°) | 1.8 / 2.9 | 9.5 | NW (315°) |
| April | 13.0 | 6.3 / 11.0 | WNW (295°) | 1.5 / 2.4 | 8.7 | NW (317°) |
| May | 15.6 | 5.7 / 9.9 | NNW (334°) | 1.2 / 1.9 | 7.7 | NW (319°) |
| June | 18.3 | 5.1 / 8.7 | N (353°) | 1.0 / 1.6 | 7.2 | NW (320°) |
| July | 20.2 | 5.0 / 8.3 | N (353°) | 1.0 / 1.5 | 7.0 | NW (320°) |
| August | 20.9 | 4.9 / 8.3 | N (357°) | 1.0 / 1.6 | 7.2 | NW (321°) |
| September | 19.0 | 5.2 / 9.1 | NW (323°) | 1.3 / 2.0 | 8.2 | NW (321°) |
| October | 16.5 | 6.3 / 11.2 | SSW (206°) | 1.5 / 2.5 | 8.9 | NW (314°) |
| November | 12.7 | 7.4 / 12.5 | SW (225°) | 1.9 / 3.0 | 9.5 | NW (313°) |
| December | 10.5 | 7.5 / 12.8 | SSW (212°) | 2.0 / 3.3 | 9.7 | NW (311°) |
Mid-route Bay of Biscay passage
| Month | Air °C | Wind mean / p90 kn | Prevailing wind | Wave mean / p90 m | Period s | Prevailing wave |
|---|---|---|---|---|---|---|
| January | 10.0 | 17.3 / 26.8 | WSW (258°) | 3.2 / 5.3 | 9.8 | W (280°) |
| February | 9.4 | 16.3 / 25.9 | WNW (285°) | 3.0 / 4.9 | 9.7 | WNW (284°) |
| March | 10.1 | 14.8 / 23.5 | NW (324°) | 2.5 / 4.0 | 9.3 | WNW (286°) |
| April | 11.3 | 13.7 / 21.8 | NNW (328°) | 2.1 / 3.3 | 8.5 | WNW (288°) |
| May | 13.6 | 12.8 / 19.9 | NNW (330°) | 1.7 / 2.6 | 7.7 | WNW (286°) |
| June | 16.3 | 12.2 / 18.9 | NW (316°) | 1.5 / 2.3 | 7.3 | WNW (289°) |
| July | 18.0 | 12.0 / 18.4 | NW (306°) | 1.4 / 2.1 | 7.0 | WNW (289°) |
| August | 18.5 | 11.6 / 18.3 | NW (312°) | 1.4 / 2.3 | 7.2 | WNW (289°) |
| September | 17.3 | 12.5 / 20.0 | NNW (330°) | 1.7 / 2.8 | 8.0 | WNW (291°) |
| October | 15.3 | 14.4 / 22.8 | WSW (252°) | 2.2 / 3.6 | 8.5 | W (281°) |
| November | 12.7 | 16.2 / 25.0 | W (268°) | 2.7 / 4.3 | 9.0 | WNW (283°) |
| December | 10.8 | 17.4 / 26.8 | WSW (256°) | 3.0 / 4.9 | 9.4 | W (279°) |
Arrival Portsmouth arrival
| Month | Air °C | Wind mean / p90 kn | Prevailing wind | Wave mean / p90 m | Period s | Prevailing wave |
|---|---|---|---|---|---|---|
| January | 6.7 | 13.3 / 21.5 | WSW (250°) | 1.5 / 2.7 | 5.8 | SW (235°) |
| February | 6.3 | 12.5 / 20.4 | W (261°) | 1.4 / 2.5 | 5.7 | WSW (244°) |
| March | 7.5 | 11.6 / 19.1 | W (269°) | 1.1 / 2.2 | 5.5 | WSW (243°) |
| April | 9.3 | 10.3 / 16.9 | WSW (256°) | 0.9 / 1.7 | 5.2 | WSW (240°) |
| May | 12.2 | 10.1 / 16.6 | W (275°) | 0.8 / 1.6 | 4.8 | WSW (241°) |
| June | 14.9 | 9.7 / 15.9 | WSW (245°) | 0.8 / 1.4 | 4.7 | WSW (243°) |
| July | 17.0 | 9.6 / 15.6 | WSW (248°) | 0.8 / 1.4 | 4.5 | WSW (245°) |
| August | 17.3 | 9.7 / 15.7 | WSW (256°) | 0.8 / 1.4 | 4.5 | WSW (248°) |
| September | 15.6 | 10.5 / 17.1 | W (268°) | 0.9 / 1.7 | 4.7 | WSW (249°) |
| October | 12.9 | 12.1 / 19.4 | WSW (248°) | 1.3 / 2.3 | 5.2 | SW (232°) |
| November | 9.8 | 12.4 / 20.0 | W (261°) | 1.4 / 2.5 | 5.3 | WSW (241°) |
| December | 7.4 | 13.2 / 21.0 | W (261°) | 1.5 / 2.7 | 5.7 | WSW (239°) |
Sea-surface temperature is omitted because the ERA5 reanalysis behind this baseline does not carry it historically. Current sea temperature is shown in the conditions panel above.
Provider data: Open-Meteo (licence), using ERA5 weather and ERA5-Ocean marine reanalysis; monthly means, p90 values and prevailing directions calculated by SailSoon for 1991–2020.
Vessels
Ships commonly used on this route
Primary route profile
Galicia
Galicia is one of the modern ships created for the longer Portsmouth–Spain service. Brittany Ferries presents the vessel around a north-west Spain theme, carried through its public rooms and cabin design. For a route guide, the practical points are the broad choice of en-suite accommodation, video-on-demand in many cabins and the mix of standard, Club and Commodore categories. Its presence on a route should still be treated as typical rather than fixed: maintenance and timetable changes can bring a different vessel. Check the ship named on the dated booking before relying on a particular room layout or facility.
Pet context: The official accommodation guide lists inside and outside pet-friendly cabins with wipe-clean flooring; availability is limited and must be selected for the actual sailing.
Official sources and review date
Facts reviewed 2026-08-11.
Also commonly used
Salamanca
Salamanca is an LNG-powered cruise ferry designed for Brittany Ferries’ Portsmouth–Spain operation and is the sister ship that followed Galicia. Its interior identity draws on the Spanish city whose name it carries, while the passenger offer centres on modern cabins and spaces intended for a long sea passage. The range includes standard accommodation and premium options, so the exact cabin specification matters more than the ship name alone. Sailing assignments can change for operational reasons; use this profile as preparation for a likely vessel, then confirm the operating ship and accommodation shown in the final booking details.
Pet context: Brittany Ferries lists pet-friendly inside cabins on Salamanca, including laminate flooring and room for a standard animal bed; book the pet option explicitly.
Official sources and review date
Facts reviewed 2026-08-11.
Also commonly used
Santoña
Santoña is the third of the recent ships developed especially for Brittany Ferries’ services to Spain, following Galicia and Salamanca. The operator describes a contemporary passenger environment whose visual references come from the Cantabrian coastal town of the same name. That makes it a familiar candidate on the longer Spanish crossings, with accommodation intended for overnight travel and a range of onboard spaces. The timetable may swap vessels, so this description is not a promise that Santoña will operate a chosen departure. Confirm the named ship, cabin category and any included services on the booking before travel.
Pet context: The ship’s official booking material includes pet-friendly accommodation, but pet places and cabin types must be checked and reserved on the dated sailing.
Official sources and review date
Facts reviewed 2026-08-11.
Ships and schedules can change; check your booking for the operating vessel.
Landfall
Arriving in Portsmouth
Portsmouth puts drivers straight onto the M275. Keep passports and any pet documentation accessible until every border check is complete, and avoid a tightly timed onward appointment, because disembarkation and border queues vary by sailing. Brittany Ferries identifies Alexandra Park as one nearby option for a dog walk, traffic permitting. Plan the UK road leg from the realistic time you will clear Portsmouth, not the scheduled docking time. Border and pet checks plus city traffic can all move that point.
Sources for route facts
- Brittany Ferries: Bilbao to Portsmouth (reviewed 2026-08-11)
- Brittany Ferries: Bilbao port guide (reviewed 2026-08-11)
- Brittany Ferries: Portsmouth port guide (reviewed 2026-08-11)
- Brittany Ferries: travelling with pets (reviewed 2026-08-11)
- GOV.UK: tapeworm treatment for dogs entering Great Britain (reviewed 2026-08-11)
Dogs aboard
Planning this ferry with a dog
Zierbena is a working harbour with an early pet check-in, and Great Britain’s return rules apply on arrival. Both need settling before you leave the Basque coast.
- Documents
- Check the accepted travel document, microchip and rabies evidence for Great Britain entry against current GOV.UK guidance.
- Tapeworm window
- Unless an exemption applies, a vet must administer and record tapeworm treatment no less than 24 and no more than 120 hours before expected arrival in Great Britain. Calculate from the Portsmouth arrival time and recalculate after any timetable change.
- At Bilbao
- Zierbena is a working harbour, not a promenade. Dogs must stay on a lead in the port and pet check-in is at least 90 minutes early.
- On board
- One night aboard, so exercise time may be shorter than outbound. Follow the instructions for the specific E-Flexer and pet accommodation actually booked.
- Muzzle
- Brittany Ferries requires a muzzle whenever the dog is outside the car, kennel or pet-friendly cabin. Practise with it before travel.
Border and carrier rules change. Confirm every item against the official sources listed above and your vet before you travel.
Questions
Frequently asked questions
How long is the ferry from Bilbao to Portsmouth?
The useful planning figure is typically about 29½–33 hours and one night. Check the dated Brittany Ferries timetable because individual crossings can differ.
Which ship operates from Bilbao to Portsmouth?
Galicia (UK ↔ Spain) or Salamanca (UK ↔ Spain) or Santoña (UK ↔ Spain) are associated with this corridor. Operational substitutions happen, so the ship shown on the booking is the one to use for cabin and pet-facility details.
Can I take a dog from Bilbao to Portsmouth?
Pet travel is offered on relevant sailings, but the available arrangement varies by ship. Select a confirmed pet-friendly cabin, kennel or other offered option and follow current carrier and border rules.
What weather should I check for the Bilbao to Portsmouth crossing?
Compare departure, mid-route and arrival conditions, especially wind, gusts, wave height and swell period. Forecasts are guidance only; the operator makes operational decisions.
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