Weather in Alappuzha in May

Shoulder season. May is shoulder season in Alappuzha — cheaper, quieter, and a genuine gamble. You should expect rain on 22 days of the month, which is more days wet than dry.

May ranks 11 of 12 — near the bottom of Alappuzha's year. January is the month that works, and the swing between the two is 35 points, which is a different holiday rather than a slightly better one.

Rain on 22 of the month's 31 days, 9 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Pack for 29.9 °C days and 27.9 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 14 days top 30 °C — hot spells arrive, but they break; the day barely swings — 1.9 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest May day reached 32.8 °C and the coldest night fell to 25.5 °C, and the wettest single day dropped 173 mm — roughly 57% of the month's rain in one day.

May is moderately variable: 80 mm in the driest year against 954 mm in the wettest, around an average of 302 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 14.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 80%, high enough to notice on the warm days without dominating them.

How May sits in the year

Temperatures hold steady either side: 30.8 °C in April, 29.9 here, 28.6 in June. Nothing about the timing within the month matters much. Rain is the thing that moves: June brings 5 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in May

Alappuzha sits close enough to the equator that daylight barely moves all year — 12.6 hours in May, against a range of just 1.1 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 30.1 °C in May — warm enough that the water offers no relief from the heat. This is the warmest the water gets all year.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

May in Alappuzha versus nearby

If Alappuzha is one option among several, the nearby comparison is worth making. Munnar is a better bet in May — 6.2 °C cooler, 2 days less rain. Teni is the weaker option in May — 4.7 °C warmer, 5 days less rain.

So: May is a compromise. January is 31 points better and is what Alappuzha is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Alappuzha

See all twelve months in Alappuzha, or where else to go in May.