Kolkata · India · 1995–2024 averages
Kolkata weather, month by month. January is the pick.
Thirty years of averages for Kolkata, India — how hot it really feels, when the rain arrives, and what the air is like. January comes out on top; October is the one to skip.
The year at a glance
Tap a month for its full breakdown.
January
bestscore 68.7/100Mild, sticky and dry, with unhealthy air.
- Feels like
- 25°
- mild
- Real temp
- 25°
- mild
- Humidity
- 70%
- sticky
- Rain
- 14mm
- dry
- Cloud cover
- 20%
- clear
- Air quality
- 196
- unhealthy
- Daylight
- 10.9h
- shortish
Month by month, metric by metric
Each strip covers the same twelve months, so you can see where the rain lands and how the air shifts with it.
Feels like
peaks at 41° in May
Real temp
25–35° in the shade across the year
Humidity
66% at its driest, 87% at its most oppressive
Rain
350mm in July, 14mm in January
Cloud cover
20% at its clearest, 93% at its greyest
Air quality
worst in January, cleanest in July
Daylight
10.8h to 13.5h of daylight across the year
Kolkata's air changes sharply through the year
The air is at its worst in January at 196 AQI (unhealthy), and at its cleanest in July at 59 (moderate). The dirtiest months here are also the driest.
Every month in full
All twelve months, all seven measures.
| Month | Feels like | Real temp | Humidity | Rain | Cloud cover | Air quality | Daylight |
|---|---|---|---|---|---|---|---|
| January | 25° mild | 25° mild | 70% sticky | 14mm dry | 20% clear | 196 unhealthy | 10.9h shortish |
| February | 30° warm | 29° warm | 67% sticky | 21mm dry | 22% clear | 160 unhealthy | 11.4h shortish |
| March | 36° hot | 33° hot | 66% sticky | 31mm dryish | 25% clear | 141 poor | 12h even |
| April | 40° brutal | 35° hot | 71% sticky | 63mm dryish | 32% clear | 138 poor | 12.7h even |
| May | 41° brutal | 35° hot | 76% sweaty | 122mm some rain | 47% bright | 91 moderate | 13.2h even |
| June | 39° scorching | 33° hot | 82% sweaty | 261mm soaking | 82% grey | 88 moderate | 13.5h even |
| July | 37° scorching | 31° warm | 86% soupy | 350mm soaking | 93% overcast | 59 moderate | 13.4h even |
| August | 37° scorching | 31° warm | 87% soupy | 324mm soaking | 93% overcast | 85 moderate | 12.9h even |
| September | 37° scorching | 31° warm | 87% soupy | 272mm soaking | 84% grey | 82 moderate | 12.3h even |
| October | 36° hot | 30° warm | 83% sweaty | 151mm rainy | 49% bright | 132 poor | 11.6h shortish |
| November | 31° warm | 29° warm | 74% sticky | 30mm dryish | 28% clear | 184 unhealthy | 11.1h shortish |
| December | 26° mild | 26° mild | 70% sticky | 15mm dry | 23% clear | 183 unhealthy | 10.8h shortish |
Kolkata weather questions
- What is the best time to visit Kolkata?
- January scores best across temperature, rain, humidity and air quality — 25° feels-like, 14mm of rain and 70% humidity. October is the month to avoid: 151mm of rain and 132 AQI.
- How hot does Kolkata get?
- May is the peak, at 41° feels-like (35° in the shade) — brutal. Even in January it reaches 25°.
- When is the rainy season in Kolkata?
- July is the wettest month at 350mm, and January the driest at just 14mm.
- Is air quality a problem in Kolkata?
- January is the worst month at 196 AQI (unhealthy), and July the best at 59 (moderate).
Weather normals from Open-Meteo (ERA5 reanalysis, 1995–2024) and CAMS air quality (2015–2024), licensed CC-BY-4.0. Contains modified Copernicus Climate Change Service information. These are long-run averages, not forecasts — any given year will differ.
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