The monsoon problem
Kolkata's monsoon is not a season you can ignore from a wardrobe perspective. From June through September, relative humidity consistently exceeds 85% and regularly approaches 95–100% during and after rain. At these humidity levels, organic fibres — silk, wool, cotton — absorb moisture from the air. Biological activity — mould, mildew, bacteria — thrives in warm, humid, organic-rich environments.
The practical result: a wardrobe left unprepared going into the monsoon will lose something every year. Usually it is a stored silk that develops mould. Sometimes it is a woollen that has been eaten by moths that found the stored body oils. Occasionally it is a significant family piece that has been in storage long enough to have accumulated multiple seasons of damage.
June, July, August, September. Four months of 85–95% humidity. Whatever you put into storage in May should be prepared to survive these four months in Kolkata's most hostile conditions. Whatever emerges in October should be immediately assessed before wearing or re-storing.
What to store in May
The pre-monsoon storage exercise is the reverse of the pre-summer transition, with one addition: the preparation must account for the monsoon specifically, not just the heat.
Monsoon-appropriate fabrics
The garments you rotate in for the monsoon should suit the conditions — high humidity, frequent rain, the practical need for fabrics that dry quickly and handle perspiration well.
Cotton Tant sarees are the classic Kolkata monsoon fabric. They are lightweight, breathe well, and can be washed at home. Everyday cotton kurtas and shirts are practical. Linen — if pre-washed to manage shrinkage — is an excellent monsoon fabric. Light cotton dupattas are more practical than silk during the monsoon.
"The Bengali monsoon wardrobe is built around Tant cotton for a reason that predates air conditioning — it is genuinely the most functional fabric for this climate."
Protecting stored garments
Three active measures are worth taking during the monsoon to protect stored garments.
The October check
When the monsoon ends in October and the air begins to dry, the wardrobe transition runs in reverse. Everything stored in May comes out for assessment. Everything you wore through the monsoon that is past its washing cycle goes for cleaning before storage or re-wearing.
The October assessment is not a formality. This is when the consequences of pre-monsoon preparation decisions become visible. Well-prepared, correctly stored garments emerge in excellent condition. Improperly prepared or stored garments emerge with problems — mould, moth damage, oxidised soils, or persistent humidity smell — that require professional intervention.
October is our highest-volume month. Post-monsoon garment assessment and cleaning, combined with pre-Puja preparation, creates significant demand. We recommend bringing post-monsoon garments for assessment in the first two weeks of October for the best turnaround time before Puja.
May is the pre-monsoon preparation window. Bring all silk, wool, and occasion wear for professional cleaning before the rains arrive. Post-monsoon recovery cleaning in October. The Swiss Laundry operates Monday to Saturday year-round from Kasba. Doorstep pickup across 30+ areas of Kolkata. Call 9836233354.