Thank you David ... I continue to be charmed by your most eloquent contributions

.
Anyway, Rob's question ...
Rob, I hope you did not pay for the long range forecast ... most weather information services charge for long range forecasts and, yet, such forecasts are the most unreliable.
However, February is one of the driest months of the year if we go by trends ... there are always exceptions to the norm ... but you can be satisfied that you have chosen one of the least rainy months of the year to take your holiday.
I can tell you that it will rain, it always rains but it is normally short sharp showers that fall for about 30 minutes or 1 hour and these mostly fall during the night or in the early hours of the morning ... the days are mostly bright and sunny.
Even in the dry months, such as February, I would expect to have about 1 or 2 days of predominant rain or cloud over a 2 week holiday ... that is about the right benchmark.
As of today, Tobago has had 5 or 6 days of total sunshine which, whilst in stark contrast to the unusually rainy period up to last weekend, is not really very normal, in fact it is the opposite extreme to the recent rainy conditions.
I stayed in Tobago in February 2004 and it rained every night and once, there was rain for a full day ... otherwise it was sunny all the time.
Hope this helps and enjoy your holiday.
Regards