I spent two years on contract at a place called Vilanculos which is 1000km north of Maputo. I was windsurfing at that stage and just learning to kite and I didnâ€™t manage to get in the water a lot due to no wind, but when the wind did blow it was great. Every time I went through a place called Inhambane, which was 3 hours south, it had wind. Mozambique is a huge country, so there might be a better prognosis at other places than Vilanculos.
If you want wind, Cape Town and up the Cape West Coast is probably a much better bet and will probably be cheaper, although December is high season and every jaapie from inland comes to the coast for holidays.
On the plus side, the Mozambique coastline is absolutely beautiful and you can have miles of beach to yourself, cheap and plentiful fish and prawns (if you buy these from the beach and not restaurants and bargain your heart out). A 4x4 is good to have as you need one to get to a lot of the beach spots and it is pretty wild and distances are far, but you can travel fast.
I left there 5 years ago, but I do not think much has changed. A very poor country, but proper accommodation is expensive (US-dollar prices), corruption is high, the cops are corrupt and theft is even higher - the locals even stole the battens from my wind-surfer while I was de-rigging!! Everyone is so poor that it is open season on anyone with money and they will steal anything not bolted down and then that as well. At that time of the year it is hot and humid and the Mozambican malaria is frightening.
Stick to the road laws especially through the villages (40km/hr and this is where the speed traps are) as you pay spot fines whether or not you have done something wrong and carry two red triangles and your insurance as that is a favourite spot fine offence as most cars are supplied with only one. I used to do the long journeys at night to miss the cops. Most of the animals â€“ even seabirds, were eaten during the war, so you havenâ€™t got the wild animal , cattle and sheep in the road danger you have in other African states.
If you are visiting to get a taste of Africa, to me South Africa isnâ€™t Africa, Mozambique is.