January ranks 2nd of 12 for Kolkata — one of the best windows
Best window · 8.8/10January averages 18°C (64°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rain is a non-issue at 14 mm for the month, with about 8 days with 6+ hours of sunshine and 10.8 hours of daylight to work with.
A 8.8/10 puts this among the year's best months in Kolkata (2nd of 12); only February scores higher, at 9.3/10.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack layers you can shed by midday plus one warm layer for the evening.
February: the best month of the year in Kolkata
Best window · 9.3/10February averages 22°C (71°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Expect 24 mm of rain — occasional showers rather than washed-out days — alongside about 14 days with 6+ hours of sunshine and 11.2 daylight hours.
On our climate-comfort scale this is the top-ranked month of the year for Kolkata at 9.3/10 — the reference point every other month on this page is measured against.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack light clothing, a hat and real sun protection.
March holds up well in Kolkata — 5th best month
Good · 7.8/10Days in March average 27°C (81°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
With around 33 mm of rain, any showers tend to pass through rather than settle in; about 20 days with 6+ hours of sunshine and 11.8 hours of daylight fill the rest.
That is 7.8/10 on the same scale — 5th of 12 months, versus 9.3/10 for the best month here.
Expect mid-season pricing, and crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
If your dates are flexible, February is materially better in Kolkata — 1.5 points higher on the same scale.
April in Kolkata — workable with trade-offs
Trade-offs · 6.9/10April averages 32°C (90°F) — genuinely punishing heat. Anything outdoors needs to happen before 10am.
Expect 22 mm of rain — occasional showers rather than washed-out days — alongside about 25 days with 6+ hours of sunshine and 12.5 daylight hours.
It scores 6.9/10 here, 6th of 12 months, against 9.3/10 in the destination's best month.
Plan for mid-season pricing, with crowds are moderate.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Flexible dates? February scores 2.4 points higher here — enough to change the trip.
May in Kolkata: expect compromises
Hardest · 3.5/10Days in May average 32°C (89°F) — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
179 mm of rain makes this a wet month here, though with about 24 days with 6+ hours of sunshine there is still bright weather between the fronts.
That is 3.5/10 on the same scale — 8th of 12 months, versus 9.3/10 for the best month here.
Budget for low-season pricing, and crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
If your dates are flexible, February is materially better in Kolkata — 5.8 points higher on the same scale.
June in Kolkata — off-season conditions
Hardest · 3.2/10June averages 31°C (87°F) and humidity near 76%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
At 149 mm this is a genuinely wet month: about 17 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 3.2/10 here, 9th of 12 months, against 9.3/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? February scores 6.1 points higher here — enough to change the trip.
July in Kolkata — off-season conditions
Hardest · 2.5/10July averages 29°C (85°F) and humidity near 85%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
253 mm of rain puts this in monsoon territory — about 18 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.
It scores 2.5/10 here, 10th of 12 months, against 9.3/10 in the destination's best month.
Figure on low-season pricing, with crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? February scores 6.8 points higher here — enough to change the trip.
August in Kolkata — the hardest end of the year
Hardest · 2.3/10Days in August average 29°C (83°F) and humidity near 88% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Expect monsoon-level rainfall at 371 mm: only about 12 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 2.3/10 on the same scale — 11th of 12 months, versus 9.3/10 for the best month here.
Budget for low-season pricing, and crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
If your dates are flexible, February is materially better in Kolkata — 7 points higher on the same scale.
September in Kolkata: expect compromises
Hardest · 2.3/10Days in September average 28°C (83°F) and humidity near 90% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.
Expect monsoon-level rainfall at 322 mm: only about 13 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.
That is 2.3/10 on the same scale — 12th of 12 months, versus 9.3/10 for the best month here.
Expect low-season pricing, and crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
If your dates are flexible, February is materially better in Kolkata — 7 points higher on the same scale.
October in Kolkata — the hardest end of the year
Hardest · 3.7/10October averages 27°C (80°F) and humidity near 86%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
At 170 mm this is a genuinely wet month: about 14 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.
It scores 3.7/10 here, 7th of 12 months, against 9.3/10 in the destination's best month.
Plan for low-season pricing, with crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella.
Flexible dates? February scores 5.6 points higher here — enough to change the trip.
November in Kolkata — one of the year's strongest windows (3rd)
Best window · 8.8/10November averages 22°C (72°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.
Rain is a non-issue at 5 mm for the month, with about 12 days with 6+ hours of sunshine and 10.9 hours of daylight to work with.
A 8.8/10 puts this among the year's best months in Kolkata (3rd of 12); only February scores higher, at 9.3/10.
Figure on peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack light clothing, a hat and real sun protection.
December in Kolkata — one of the year's strongest windows (4th)
Best window · 8.7/10Temperatures hover around 18°C (65°F) — the kind of month where neither heat nor cold forces the schedule.
With around 17 mm of rain, any showers tend to pass through rather than settle in; about 9 days with 6+ hours of sunshine and 10.6 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Kolkata at 8.7/10 (4th of 12), just behind February at 9.3/10.
Expect peak pricing, and this is one of the busiest months here.
Pack layers you can shed by midday plus one warm layer for the evening.
