The answer to this is very simple – anytime of the year! Water temperatures rarely fall below 19C in the winter months and reach a high of 24C in the summer. Viability can range between15 and 30 metres depending on the prevailing weather conditions. Tenerife can suffer occasional strong winds in the winter months, which will give us surface swells. However, the northerly winds which bring these conditions do not affect us as much in the south and cancelled dives are vary rare.