For those wishing travel up to Kerala, the best time to visit is from October to February, once after the passage of that tourist season, the climate will be hotter and humid. Monsoon of Kerala usually hit the shores of Kerala during the beginning of June and lasts up to September. Moreover, there is nothing like winter season here in Kerala, as there is no considerable difference in the temperature except the fact that the latter is more pleasant.
Try including a Wild safari in your travel itinerary if you are travelling in the dense forests of Kerala that can be availed from Wayanad, Thekkady and Muthanga.
You may seek the help of online map once after installing those kinds of apps in your phone. This would be fruitful when travelling via public transports.
Apply a sizeable amount of sunscreen with an SPF of either 50+ or 30+ well before you step into the swimming pool of the resorts right when the sun is up.
Try to avoid the strenuous drive at night when you are climbing up or getting down the hairpin curves of Wayanad and Idukki. So schedule your trip accordingly that you are covering these spots in broad daylight.
Take your trekking boots along with you when you go places like Munnar and Wayanad
A pocket-torch will also come handy