Weather and Sea conditions

Tides and Currents

Tidal heights MHWS 2.5 m (8'), MHWN 1.9 m (6') and MLWS 0.4 m (1'). The springtides are regular, but the neaps are irregular. Frequently the tide will be rising at Douala, while there is a decided out-going stream running in the river. The rate of the stream is from 2 to 3 knots at half tide. In the deep channel between Light Buoy ''C'' and the Base Light Buoy a very strong tidal stream is sometimes experienced, the out-going stream attaining a rate of 5 knots at springs. Between the Base Light Buoy and the next buoy NNE of it, thein-going stream sets eastward and the out-going stream westward.

The out-going tidal stream sets strongly towards the ''Tetes de Chiens'' shoals, and mariners are cautioned against getting too close to the E side of the channel. After a series of heavy rains the out-going stream will run from 7 to 8 hours attaining a max. rate of 2 3/4 knots, and the in-going stream from 4 to 5 hours at a rate of less than 2 knots. The level of the river in the rainy season is 0.5 m higher than that in the dry season. In the dredged channel, in the approach to Douala, the in-going stream sets NW on to the black buoys, and the out-going stream sets SW on to the red buoys.

Wind and Sea

During the dry season (December - mid March) the SW sea-breeze can reach a force of about 10 m/sec. (5 - Beaufort). Dangerous winds are rare but heavy rains fall during the wet season (March-November).

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