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

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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

Best thing we've done in Barcelona

This sailing trip was one of the best things we have ever done in Barcelona and we’ve been to Barcelona many times and seen most of what it has to offer. Dave was absolutely brilliant and made the whole experience from the initial booking through to disembarking back at the harbour totally seamless and a great experience. Dave replies to emails straight away, he was very accommodating, he even agreed to move our trip to another day due to the weather, he didn’t mind if we brought along our own food and drink, he was even prepared to pull up and let us go for a swim, but we chickened out of that because the water was so cold..
alexjwood | Birmingham, UK | 28 May 2014

Great Experience

It was a great present for my gf. Evertyhing was good organized and the great views the coastline of barcelona were astonishing! Not the last time i will book this trip for sure! 5+
Rastko L | | 17 July 2015

Fantastic sailing experience

Great sailing experience and great captain. When we first arrived at the boat the weather was not that good and the captain told us it is our option if we want to go, otherwise he will fully refund the money. We decided to wait couple of hours and then the sun got back and we went in a wonderful cruise.
Alexandru415 | Bucharest, Romania | 24 May 2015

Great view of Barcelona

Had a great sail with Capt. Dave. He was very accommodating and we enjoyed the conversation as we sailed the coastline. The boat was very easy to find in the large marina and the reservation process was smooth. Thanks Dave!
PATRICK R | madison | 25 March 2018

A sunset sail with David!

After a long day of walking the streets of Barcelona, our group of 8 (seniors) took a cab to meet David for his last sail of the day. Unfortunately for David, his classic sail boat was down for repairs, however; he had a backup plan in place when we arrived. We spent a relaxing evening enjoying our wine and snacks while sailing in a 42' sailboat overlooking the magnificent city of Barcelona. Seeing the sunset over the water...priceless! The best advise I can offer is to book a sail with David. David is a first class captain and we (really) enjoyed his company. David was not only easy on the eyes, he was a delightful captain to talk to. David left nothing unanswered if you had a question about sailing or the city of Barcelona. What an enjoyable evening...thank you David for adding your personal touch to a beautiful evening! You're the best and we wish you much success!!!
nchurchill | Houston, Texas | 19 September 2014

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