The mountains are cooler. Inland is cooler than the coast. Visitors will often find themselves pestered by the local men. It is advisable to take a low profile and continue on your way if approached. Limited but cheap.
Major roads are all weather.
3rd party insurance is required and a green card. A UK licence is sufficient. Mainly French social customs. Be courteous but wary of young boys selling goods or acting as guides. Beachwear should be confined to the beach and pool side.