Beaufort wind force scale

Beaufort wind scale Mean Wind Speed Limits of wind speed Wind descriptive terms Probable wave height in metres* Probable maximum wave height in metres* Seastate Sea descriptive terms
Knots m/s Knots m/s
0 0 0 <1 0–0.2 Calm - - 0 Calm (glassy)
1 2 0.8 1–3 0.3–1.5 Light air 0.1 0.1 1 Calm (rippled)
2 5 2.4 4–6 1.6–3.3 Light breeze 0.2 0.3 2 Smooth (wavelets)
3 9 4.3 7–10 3.4–5.4 Gentle breeze 0.6 1.0 3 Slight
4 13 6.7 11–16 5.5–7.9 Moderate breeze 1.0 1.5 3–4 Slight–Moderate
5 19 9.3 17–21 8.0–10.7 Fresh breeze 2.0 2.5 4 Moderate
6 24 12.3 22–27 10.8–13.8 Strong breeze 3.0 4.0 5 Rough
7 30 15.5 28–33 13.9–17.1 Near gale 4.0 5.5 5–6 Rough–Very rough
8 37 18.9 34–40 17.2–20.7 Gale 5.5 7.5 6–7 Very rough–High
9 44 22.6 41–47 20.8–24.4 Severe gale 7.0 10.0 7 High
10 52 26.4 48–55 24.5–28.4 Storm 9.0 12.5 8 Very High
11 60 30.5 56–63 28.5–32.6 Violent storm 11.5 16.0 8 Very High
12 - - 64+ 32.7+ Hurricane 14+ - 9 Phenomenal

*

  1. These values refer to well-developed wind waves of the open sea.
  2. The lag effect between the wind getting up and the sea increasing should be borne in mind.

Spanish           English       Wave height
Calma/Llana                     0 m
Rizada                          Less than 0.1 m
Marejadilla       Smooth        Less than 0.5 m
Marejada          Slight        0.5 m - 1.25 m
Fuerte marejada   Moderate      1.25 m - 2.5 m
Gruesa            Rough         2.5 m - 4.0 m
Muy gruesa        Very rough    4.0 m - 6.0 m
Arbolada          High          6.0 m - 9.0 m
Montañosa         Very high     9.0 m - 14.0 m
Enorme            Phenomenal    More than 14.0 m

What our customers say

Over 250 ★★★★★ reviews

TripAdvisor Certificate of Excellence & Hall of Fame 2015, 2016, 2017, 2018, 2019

All aboard for a great day sailing

Family and friends were in Barcelona for an upcoming wedding. Following days of walking and sightseeing, we enjoyed a beautiful sunny day aboard Gemini with Captain Dave. This sailing experience shows Barca in a different but beautiful light. A highlight of our trip.
Stewart A | Melbourne, Victoria, Australia | 20 June 2015

What an absolute treat

My friends and I had an absolutely fantastic afternoon sailing along the Barcelona coastline earlier in the month. Dave was a brilliant and knowledgeable host, extremely welcoming and we couldn't have asked for better weather. It was such a treat being able to swim in the clear waters alongside the boat. I would highly recommend this experience to all as it was the highlight of my Barcelona adventure. Thanks again Dave!
SuzeDyson | Auckland Central, New Zealand | 22 June 2015

All add my 5 star review to our sunset sail

One of the nicest things we did while in Barcelona and that's saying quite a bit. It was just really relaxing, literally smooth sailing and great views of the city. The Gemini was easy to find - less than a 10 Euro cab ride from the Gotic Quarter. We booked the sunset cruise as a private sail for our wedding anniversary. It may be helpful to know that David is Scottish so it was, for us, a plus to have a native English speaking guide.
dogs_in_heaven | Berlin, Maryland | 21 October 2014

Excellent, relaxing time :)

Spent a brilliant few hours out on the water with Dave last week. Really nice guy and the boat is a real classic, not much in the way of automation! Weather was gorgeous of course and we just pootled about, absolutely perfect. Even my perpetually grumpy teenage daughter admitted that she enjoyed it, I can think of no higher praise!
Matt P | London, England | 9 August 2015

Great Time

Gemini is a wonderful ship and Dave is a great captain. You'll have an excellent afternoon overlooking Barcelona.
Chris S | Detroit, Michigan | 25 June 2015

Relaxing day at sea

We had a lovely and relaxing day at sea with Captain Dave. We highly recommend this private tour, great value for money!
nellafin | Helsinki, Finland | 16 August 2018

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