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 fantastic afternoon

A group of friends and I sailed with Dave one afternoon and it was one of the best things we've done in Barcelona! It was great to see Barcelona from the water and Dave was extremely nice and Gemini was great. Hands down something you must do while in Barcelona
Jacqueline B | Barcelona, Spain | 12 June 2014

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

Great Sailing Experience in Barcelona

We booked afternoon on Capitan Dave's beautiful boat as a bithday surprise for our friend. We had a fantastic time. Very relaxing and exiting in the same time.
Piotr K | | 6 May 2015

Lovely way to spend a couple of hours

Our group of 11, including 6 children aged 9-12, had a wonderful trip. Captain Danny was very friendly and let all the kids have a go at skippering the boat, which was one of their highlights of visiting Barcelona!
Melsybabes | Warlingham, United Kingdom | 2 January 2018

Hen do fun!

We surprised the boat loving bride to be with a 3.5 hour private trip on the Gemini and she absolutely loved it. We all had the most amazing experience. The boat is gorgeous and with the sun out this really is a must do in Barcelona! David is a lovely guy, very friendly and easy going. We brought our own food and drink on board and some speakers to play our own music. This is such a good price as well compared to other boat companies over there that charge double the price for half the amount of time. We all definitely recommend this and would go back again next time we are in Barca.
Gembles85 | Surrey | 1 July 2014

Trip Highlight!!

We had a wonderful time!! Gorgeous views of the city and a fun time on the boat. We took all 5 of our kids ranging in age from 3-17 and everyone felt it was the best part of our trip. Would definitely recommend
kscottsmith5 | New Canaan, Connecticut | 11 August 2015

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