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

A wonderful experience

Although we sailed on unsettled sea day :-)
LihiRa | Zichron Yaakov, Israel | 9 October 2015

Very best sailing in Barcelona

Get sailing on a great boat with a great skipper. All around a fantastic experience. You will not be disappointed.
Eric S | | 22 April 2015

Wonderful experience

My mom and I recently went on an afternoon sail with Dave. We were a few minutes late, due to traffic from where we were coming from, but Dave was accommodating and he was waiting for us in the boat when we arrived. The weather was beautiful and it was overall a very relaxing and enjoyable sail. Thank you!
Grace L | | 24 September 2018

An unforgettable experience

A Trip with Dave on the Gemini is one of those gems that you feel very lucky to have found and will leave a beautiful, unforgettable experience on your mind. The price is incredibly affordable for the experience of being on a timeless sailboat cruising along the Barcelona coast. Dave, the captain, is full of interesting stories and makes you feel like this is the trip of your life. If you choose to do one thing while you’re in Barcelona, do this!
Anna L | Barcelona | 21 October 2018

Perfect day!

I would highly recommend spending a day sailing along the Barcelona coast with Captain Dave. We were out for a 7 hour cruise, although by the time we docked it was closer to 8 hours (not a complaint!). As soon as we slipped away from the dock the temperature dropped from hot and sticky to sunny and warm. The noise and crowds of the busy, steamy city were quickly a memory and we spent a beautiful serene afternoon gently swaying up the coast and back.
FTA269 | Sutton, Massachusetts | 20 August 2013

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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