Kerala · Month comparison
September vs December
December ranks #1 overall vs September at #9. The Kochi-Muziris Biennale opens and peak season begins — Kerala's most vibrant month.
September
#9 of 12 months
Strong option
Onam festival (some years), monsoon easing — the first glimpses of the post-rain transformation.
- ↑The southwest monsoon begins retreating from Kerala in September, with the second half of the month offering increasingly clear days and the backwaters returning to navigable condition. September is a genuine transition month — not the full dry-season experience, but a foretaste of it.
- ↑In years when Onam falls in September, the state-wide festivities offer the same cultural richness as August. The 26-course Onam Sadya at traditional restaurants (Malabar Junction in Fort Kochi, Grand Hotel in Thiruvananthapuram) is available throughout the festival period.
December
#1 of 12 months
Best match
The Kochi-Muziris Biennale opens and peak season begins — Kerala's most vibrant month.
- ↑The Kochi-Muziris Biennale opens in December — its opening weeks draw the international art world to Fort Kochi, creating an atmosphere unlike any other event in India. The installations occupy the Aspinwall House heritage compound, Baker's Bungalow, and Pepper House; the quality of international participation has grown each edition since 2012.
- ↑December's weather is essentially perfect: 31°C days, cool evenings at 22°C, virtually no rain, low humidity, and the backwaters glassy and still. Christmas celebrations in Kerala — a state with one of India's largest Christian populations — are genuinely festive, particularly in Kottayam and Fort Kochi's Santa Cruz Cathedral.
| Factor | September | December |
|---|---|---|
| Weather score | 4 | 9 |
| Value score | 8 | 4 |
| Crowd score | 7 | 3 |
| Events score | 7 | 9 |
| Atmosphere | 6 | 9 |
| Avg high temp | 30°C | 31°C |
| Monthly rain | 262mm | 36mm |
| Daily sunshine | 4.1hrs | 8hrs |
September trade-offs
- ↓September's early weeks remain heavily affected by the tail of the southwest monsoon: 262mm of rain with unpredictable daily patterns. Houseboat operators begin cautiously resuming services, but availability and reliability are lower than October onwards.
- ↓The northeast monsoon can also begin arriving in October, creating a window in September that is actually shorter than it appears on paper. Planning flexibility is essential.
December trade-offs
- ↓December is expensive and fills fast. The Biennale opening, Christmas week, and New Year's Eve command premium pricing: a mid-range houseboat that costs ₹8,000 in September costs ₹22,000 in December. New Year's Eve in particular triggers surge pricing across all properties.
- ↓Popular itinerary combinations — Fort Kochi plus Alleppey houseboat plus Munnar — require booking 6–8 weeks in advance for December travel. Last-minute travel in December can result in a truncated, expensive experience.
Scores compare months within Kerala. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →