I have been organising tours in Kerala since 2008. For most of the first decade of that work, the seasons were predictable. June and July were monsoon months. August and September were the late monsoon, easing into the post-monsoon. October was a transition. November through February was peak season, the time when international travellers arrived in volume and the weather was reliably comfortable. March was a brief shoulder. April and May were the hot months, with low tourism and lower hotel rates. The calendar repeated itself, year after year, with small variations that were within the bounds of normal.

Around 2017, that started to break.

This is the operator-honest version of what has happened to Kerala’s seasons in the years since, what it has meant for the people who run tourism here, and how a Kerala tour operator now thinks about a calendar that no longer behaves the way it used to. It is not a marketing piece. It is a description of what has actually changed, written from the desk where the rerouting and the rebooking happens.

The decade of disruption, in chronological order

The last ten years have been one continuous sequence of disruptions for Kerala tourism, each on its own scale, each with its own cause, but compounding in their cumulative effect. Some are climate-driven. Some are geopolitical. Some are pandemic-related. The point is that they have not stopped, and the industry has had to learn to operate inside a state of near-permanent disruption.

2017, Cyclone Ockhi. A late-November cyclone that formed unusually late in the post-monsoon period, primarily affecting the Tamil Nadu and Kerala coasts. Hundreds of fishermen lost at sea. The cyclone itself did not directly hit the inland tourism circuit, but it was the first signal in recent memory that the patterns were shifting. Cyclones in November are not what the Arabian Sea has historically produced.
2018, the great floods. This is the one most people remember. June and July of that year were strikingly dry by Kerala standards — most of the season’s expected rainfall did not arrive. Then in August, in the days before Independence Day, the rain arrived all at once. The dams, which had been held at high levels through the dry June and July expecting normal-pattern rainfall, were suddenly forced to release water in volumes the river systems could not absorb. Major rivers across the state burst their banks. Aluva and Paravur went under. Cochin International Airport closed for two weeks. Around 500 people died and roughly a million were displaced from their homes. The international tourism season that followed was effectively cancelled.
2019, the second floods. The following year produced a similar August event, smaller in scale than 2018 but still significant. Wayanad, Idukki and parts of central Kerala saw landslides and flooding. The pattern of dry early monsoon followed by violent late-monsoon rain was now established as something more than a one-off.
2020 to 2022, COVID. Not a climate event, but a continuation of the disruption. International travel stopped. Inbound tourism to Kerala effectively went to zero. The industry that had been recovering from the floods now had to absorb three years with no work. Many operators left the business.
2023, the partial return. International travel restarted. The 2023-24 season was the first in five years that had something resembling a normal flow of international arrivals. It was not back to pre-2018 levels, but it was a recovery.
2024, India-Pakistan tensions and the Wayanad landslides. A military incident on the India-Pakistan border in spring 2024 triggered a rapid deterioration in inbound travel sentiment, particularly from Europe. Many guests who had booked Kerala holidays cancelled or postponed. Then in July 2024, Wayanad in northern Kerala was hit by landslides that killed several hundred people in a single night. Climate scientists linked the event to a combination of unusually concentrated rainfall and the long-running ecological pressure on the Western Ghats. The international news coverage further dampened sentiment.
2025, deeper geopolitics. The India-Pakistan tensions escalated in early 2025. The 2025-26 season opened with weakened international demand, particularly from European source markets where geopolitical risk perception had shifted.
2026, the Iran conflict. The current 2026 situation in the Middle East, with the conflict involving Iran, has further softened international travel sentiment. The Gulf is one of the main air corridors for European travellers reaching India. Disruption in the region affects the routing, the cost, and the perception of regional stability.

That is one event a year, almost without exception, since 2017. Not all are climate-driven. But the climate-driven ones (Ockhi, the 2018 and 2019 floods, the 2024 Wayanad landslides) sit alongside the others as part of a single picture: an industry that no longer operates in stable conditions.

What has actually changed about the seasons

The headline change is not that Kerala’s monsoon has shifted to a different time of year. The monsoon still arrives in June. The post-monsoon still happens in October. The broad rhythm is intact.

What has changed is the predictability within those windows. A few specific patterns are now clearly visible to anyone who has been watching the weather here for a decade.

The monsoon has become bursty. Where the southwest monsoon used to deliver rain in steady moderate patterns across June, July and August, it now delivers rain in concentrated bursts. A two-week dry spell in July is no longer unusual. A three-day extreme rainfall event that drops a month’s worth of water in seventy-two hours is no longer unusual either. Both happen regularly. Both are difficult for agriculture, for water management, and for tourism that is trying to plan around stable conditions.

August has become the riskiest month, not the safest. Historically, August was understood as the easing of the monsoon. By the 2018 and 2019 events, August has reasserted itself as a high-rainfall month, sometimes more intense than July. The 2024 Wayanad landslides happened in July but the monsoon stress had built across the previous weeks of erratic rainfall. The traditional advice that August was a transition month no longer holds reliably.

September has become surprisingly stable. In a counterintuitive shift, September has emerged as one of the more reliable months in recent years. The rainfall is short-spell and infrequent, the landscape is at its most lush from the preceding rains, and the weather is generally comfortable. For travellers willing to consider what was historically considered shoulder season, September is now arguably one of the better months. The Onam festival, which falls in late August or early September depending on the lunar calendar, also makes this period one of the most culturally rich times to visit.

The peak season has narrowed. Where November to March was the standard six-month international tourism window, the dependable peak has narrowed in recent years to roughly November to February. Late October now varies year to year. Late February sometimes pushes into early summer. The four reliable months are increasingly when the volume happens.

Heat extremes are stronger. April and May, always hot, now produce sustained heatwaves that did not happen with the same regularity in the 2000s. The Arabian Sea low-pressure systems that drive much of the regional heat have intensified, partly in response to warmer sea surface temperatures. Coastal Kerala in May 2025 saw stretches of days above 38 degrees Celsius with humidity in the high 80s. This is not unprecedented, but it is more frequent than it used to be.

Unseasonal rain happens. December rain, once almost unheard of, now appears in some years. It is not heavy or sustained, but it is unexpected. A guest who has booked December specifically to avoid rain can find a wet morning ruining a planned trek.

The cumulative effect is that the calendar has become a less reliable instrument for planning. The probabilities are still in the right places — November through February is still your best chance of comfortable weather — but the variance around those probabilities has widened.

What this means for an operator

Running a tour business under these conditions is operationally different from how it was a decade ago. Three things have changed in how we work.

More buffer in every itinerary. Where we used to design tours with tight day-to-day connections, we now build in buffer days, alternative routings, and contingency planning. A hill station drive that could be cancelled by an unexpected landslide needs an alternative low-altitude option. A houseboat night that could be disrupted by extreme weather needs a backup property. Most of these contingencies never get used. The discipline of building them in is now part of the work.

Closer monitoring of conditions. We watch the forecasts, the dam release schedules, the road conditions, and the local government advisories more actively than we did in 2015. Information that used to be checked weekly is now checked daily during shoulder months and almost continuously during monsoon.

Honest conversations with prospective guests. When a traveller asks whether a particular month is safe to book, the honest answer is more nuanced than it used to be. We tell people what we know. We tell them what we cannot predict. We tell them what insurance to consider and what flexibility to build into their plans. The era of confidently telling a guest that February is reliable is over. February is reliable on the average. The variance has widened.

There is one piece of operator advice that has crystallised over the last few years and that we now share routinely: forget about the strict idea of season and off-season. Plan your trip around when you are personally ready to travel, then work with us to design the right experience for the conditions of that time. The traveller who refuses to consider August because August is “off-season” misses an Onam, a working harvest festival, a quieter Kerala, and rates that are 40 percent below peak. The traveller who insists on December because December is “peak season” sometimes runs into unseasonal rain and pays double for the privilege. The right approach is to start with your own calendar and let us help you understand what that month actually offers.

What it means for the industry

The disruption of the last ten years has reshaped Kerala’s tourism industry in ways that are still working themselves out.

The most visible change is the rise of outbound travel as a survival strategy. A significant number of Kerala operators have started selling outbound tours, helping Indians travel abroad rather than helping foreigners travel to Kerala. The Indian middle class is now travelling internationally at scales that did not exist even a decade ago, and Kerala-based travel companies have moved into this market to balance the seasonality and unpredictability of the inbound business. Whether this is good or bad for Kerala-as-destination is unclear. It does mean that the operator skill base, the supplier relationships, and the marketing energy that used to be focused entirely on bringing the world to Kerala is now partly focused on taking Kerala to the world.

A second change is the consolidation of the operator landscape. Operators with high overheads, large offices, multiple staff and significant fixed costs have struggled in the post-2018 environment. Lean operators, owner-run businesses with low overheads and high adaptability, have been better positioned to absorb the disruption. The middle tier of established but expensive operators is the segment under most pressure. The structure of the industry is shifting toward small, specialist operators on one end and large institutionally-backed operators on the other, with less in between.

A third change is the growing importance of repeat guests and word-of-mouth referrals. When traditional inbound channels are disrupted, the guests who return for a second or third Kerala trip and the guests who recommend the operator to a friend become disproportionately important. This is good for operators who do their work well and bad for operators who depend on volume marketing. We have always been on the relationship side of this divide and the disruption has, in a backwards way, validated the choice.

The bigger picture

Kerala has not stood still in response to all of this. The state’s response to the 2018 floods produced a serious investment in disaster management infrastructure, early warning systems, and rebuilding standards. Climate action plans have been published at state and district levels. The plantations of the Western Ghats, much discussed, are also a significant carbon sink, and the agricultural and forest lands of central Kerala continue to play a role in regional climate moderation that is rarely acknowledged. Kerala is one of the more environmentally aware Indian states by most measures, and the response to climate stress here has been more substantive than in most parts of the country.

For travellers, this is part of why visiting Kerala thoughtfully still matters. The destination is responding to climate pressure. The operators are adapting. The state is investing. Tourism that engages with this reality, rather than pretending the seasons are still 1995, supports the part of Kerala’s economy that is doing the work.

So, when should you visit?

This is the question I started with and the question travellers want answered. The honest answer in 2026 is that the broad guidance still holds but the precision is lower than it used to be.

November to February remains the most reliable window. If you have flexibility on dates and want the highest probability of comfortable weather and full access to all experiences, this is still the right answer.
March and October are excellent shoulder months that often deliver near-peak conditions with fewer crowds and better hotel value.
September is the surprising favourite of recent years. Lower rainfall than its reputation suggests, lush landscape, Onam culture, and very good hotel rates.
April and May work for travellers who are heat-comfortable and want minimal crowds and minimum rates. The actual time spent in outdoor heat is small for most itineraries because so much of the day is spent in air-conditioned vehicles and hotels.
June, July and August are the wet months. Genuinely lovely for monsoon-curious travellers, atmospheric backwater experiences, and Ayurveda. Not the right window for high-altitude trekking or road cycling.

For the practical seasonal guide with our full activity matrix and month-by-month detail, see our Best Time to Visit Kerala page.

What this post has tried to add is the layer of context behind that guide: why the seasons no longer behave the way they did, what we have observed from inside the industry, and how to think about visiting Kerala in an era when the calendar has become a less reliable instrument than it used to be.

Plan a Kerala journey

We design private and small-group programs for international travellers, with the kind of contingency planning and on-the-ground knowledge that the current conditions require. Tell us when you are thinking of travelling and we will share an honest picture of what that month actually offers.

For the seasonal reference guide, see Best Time to Visit Kerala. For broader context on the industry, see our piece on the history of Kerala tourism.