Here at Adventure Antigua weather forecasting is an essential tool used in our business. Yesterday we had a tough one with some bad weather that rolled in. We sat glued to weather maps, radar, and satellite images on the computer before we made the decision to postpone two boat trips for the day until thismorning. As someone who monitors weather every day and then has to send several boats out, i see what forecasts work and what doesn’t. No site is 100% accurate, and many are total garbage. Dont ever use yahoo wather or weather.com’s animated forecasts. I have never seen them say we would have a sunny day here in Antigua. The most simple forecasting site giving long range forecasts that has the highest degree of accuracy for Antigua and Barbuda is windguru. Coming from 17 years of competitive windsurfing i can tell you that there isn’t a group of more addicted wind and wave junkies that windsurfers, and windguru was set up by a bunch of them. When i first heard about it i thought there was no way that these guys from Czech republic could tell me what weather i could expect in Antigua next week. All my friends were telling me that it worked so i added windguru to my favorites and started checking each day. It’s been years now and they have been incredibly accurate predicting cloud cover, rain, winds, and waves. They are are also accurate at predicting wave direction and wind direction. The forecasts are so good that i think our local forecasters here should just tell people what windguru is forecasting before doing or saying anything else. So often windguru will forecast a weather event like strong winds or big rain or huge waves and we say to each other: ”Windguru has gone mad again as there are no storms forming and nothing out there”. We then have to eat our words a few days later when a storm forms a thousand miles away and things start to look like they will be right. Last year was the best though when a week before Hurricane Dean appeared it was forecast by windguru. Everyone thought that windguru had gone mad until they saw the clouds coming together on sat maps.
You can see that by the end of the day it is saying that it will be 13 knots at 20 hours (8pm). Under the colourful wind speed boxes there is a line for wind direction. On the far left it is pointing from right to left using the compass directions. East is on the right and west is on the left. North is up top and south is below. In this case the winds are coming from the East on the right and blowing towards the west. The next thing is something very important for boaters and especially ones that are kept on moorings off beaches at areas where it is normally calm. Many boats here in Antigua would be safer if people would keep an eye during the winter on this part of windguru. Wave height and wave direction. Waves don’t always come from the east here in Antigua. The image below shows the red arrow i drew pointing at wave size or height. As you can see at 5 am it was 2.2 meters high and over on the far right at 20 hrs they will be 1.4 meters so the waves are dropping through the day.