Open the the ignition coils, dry their contact spring with a cloth and check the rubber boots for any water or moisture..
open the spark plugs, clean them with a tissue paper or sort of thing, dip their tips in petrol for like 2 to 5 mins.. let the petrol evaporate off the tips and put them back in, the ignition coils back on.
clean the air filter box of any dirt / grease / moisture. Check if your air filter is dry or not, if it is not, let it dry.. meanwhile start your car and see how does it behave.. just get a new filter when you're at it..
or before starting, you can wait for the air filter to dry out, and in the meanwhile, you can check all the connectors you can see in the engine bay.. check for any moisture / water in them.. open them one by one, check, clean / dry, connect them back.. their is a spray to clean these connectors, I don't remember the name.. WD-40 is good too but, you have to wait like 4 to 5 hours before you can connect them back..