April
Pre-monsoonApril is the hottest month at sea level in Kerala, around 33–35°C in Kochi, while Munnar stays near 25°C by day — which is exactly why the British built a hill station there.
The coast is genuinely uncomfortable in the middle of the day and the backwaters are at their most humid. The hills are not. If you are coming in April, weight the itinerary upward: more nights in Munnar, Vagamon or Wayanad, fewer in Alleppey.
The trade-off up top is haze rather than heat. The air carries dust before the rains break, so Top Station gives you a milky wash rather than the ridge line you saw in the photograph. Nobody tells you that before you book, and it is the single most common April disappointment.
Rooms are cheap — often half of the December figure for the same property — and Eravikulam has usually reopened after the calving closure. Late April brings the first pre-monsoon thunderstorms, which are worth being caught in: one afternoon of them clears the haze for a day.
- Thrissur Pooram falls in April or early May — the largest temple festival in Kerala, and the one day of the year Thrissur is worth planning a trip around. Accommodation there sells out; the drive from Kochi is 80 km.
- Water supply gets tight in a bad April and some smaller Munnar properties ration it. Worth one question before you book somewhere very cheap.
- Eravikulam National Park is normally open again by April after the February–March calving closure. Confirm the date before you rely on it — it moves.
Best for — Hill stations · Cheap rooms with dry weather · Thrissur Pooram