AI-generatedKolkata at a glance
- Best time
- Nov – Feb
- Warmest month
- Apr · 35°
- Sunshine a year
- 2,240 h
- Rain a year
- 1,592 mm
- Climate
- Tropical
- Time zone
- UTC+5:30
- Elevation
- 11 m
Climate in Kolkata
Kolkata has a tropical climate: it is warm all year round, and the seasons differ mainly in how much rain falls. April is the warmest month with average highs of 35 °C, while January is the coolest at 25 °C. With around 2,240 hours of sunshine a year, Kolkata is sunny; March is the sunniest month with 8.0 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Fair
Best time to visit: November – February
October is in the cyclone season
Keep in mindFrequent rainStorm season
A typical day in October
- Morning, 08:00: about 27°
- Midday, 13:00: about 30°
- Afternoon, 16:00: about 29°
- Evening, 20:00: about 26°
- Night, 23:00: about 25°
05:3217:12
Warm enough for a T-shirt in the evening.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 05:18–06:02 · evening 16:42–17:26
- Blue hour
- Morning 05:10–05:18 · evening 17:26–17:35
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Kolkata in October?
In October, Kolkata is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 139 mm in total. On about 20 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Kolkata.
More details for October
- Daylight
- 11 h 40 min05:32 – 17:12
- UV index
- 8 · very highclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 10 km/haverage daily peakAll months
- Cloud cover
- 49 %on averageAll months
- Hot days
- 20 days30 °C or moreAll months
- Time zone
- UTC+5:30Asia/Kolkata
How the score comes together
- Temperatureweight 50 %59 %
- Sunshineweight 20 %45 %
- Few rainy daysweight 30 %35 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
Sunshine hours in Kolkata
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 5.7 of 11.7 hours of daylight in Kolkata, 49 % of the day.
Sunshine hours: estimated from radiation data (ERA5, 1996–2025) and calibrated against measured station values; no weather station is close enough here. Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Kolkata
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 8 · very highStay in the shade around midday; SPF 50, clothing, hat and sunglasses.
The sun is strongest in June (UV 12).
Minutes until sunburn in October
- Very fair skin
- about 15 min
- Fair skin
- about 20 min
- Light brown skin
- about 30 min
- Olive skin
- about 35 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Kolkata: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Kolkata has about 13 rainy days with 139 mm of rain in total.
Wind and clouds in Kolkata
How breezy and how cloudy Kolkata is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Kolkata typically peaks at 10 km/h during the day: Beaufort 2, light air.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 49 % of the sky over Kolkata: variable cloud, with about 5.7 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Kolkata
How often the day gets hot in Kolkata (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Kolkata has about 20 hot days, with an average daytime high of 30 °C: hot and muggy. Plan outdoor activities for the morning and evening, drink a lot and take breaks in the cool.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Kolkata
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cool 8–15°
- Pleasant 15–20°
- Warm 20–24°
- Hot 24° and more
- muggy month (10+ muggy days)
HotOctober: nights around 24°. Hot nights: air conditioning makes sleeping much easier. Muggy on about 31 days (dew point 18 °C or more).
The coolest nights are in January (13°), the warmest in June (27°). Tropical nights of 20 °C and more are the rule from March to October; then air conditioning or a fan helps you sleep. Nights are pleasant for sleeping (15 to 20 °C) in February and from November to December. It is muggy (dew point 18 °C or more) on about 255 days a year, mostly from March to November.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 96 | 25° | 13° | 7.7 h | 2 | 13 |
| FebruaryFeb | 85 | 29° | 17° | 7.6 h | 3 | 22 |
| MarchMar | 58 | 33° | 22° | 8.0 h | 5 | 31 |
| AprilApr | 37 | 35° | 25° | 7.7 h | 8 | 63 |
| MayMay | 26 | 35° | 27° | 6.8 h | 12 | 116 |
| JuneJun | 18 | 33° | 27° | 4.5 h | 21 | 255 |
| JulyJul | 27 | 31° | 26° | 3.8 h | 29 | 337 |
| AugustAug | 28 | 31° | 26° | 3.7 h | 29 | 311 |
| SeptemberSep | 30 | 31° | 26° | 4.3 h | 25 | 265 |
| OctoberOct | 49 | 30° | 24° | 5.7 h | 13 | 139 |
| NovemberNov | 84 | 28° | 19° | 6.9 h | 2 | 24 |
| DecemberDec | 94 | 26° | 15° | 7.1 h | 1 | 16 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
22.56° N, 88.36° E · 11 m · Asia/Kolkata
Best time to visit Kolkata
The best time to visit Kolkata is from November to February. For sightseeing, day trips and hiking, conditions are most comfortable from December to January. From March to June it can get very hot, with highs of up to 35 °C. Rain is most frequent from May to October; the wettest month is July with 337 mm.
Kolkata through the seasons
How the weather changes over the seasons, with averages for each.
Kolkata in the dry season
Nov – Apr
Good
- 25–35 °C by day
- 8 h of sun a day
- 20 rainy days in all
Kolkata in the rainy season
May – Oct
Poor
- 30–35 °C by day
- 5 h of sun a day
- 130 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Kolkata for you.
Your best months: December – January
Based on the climate averages; tap a month to see its details.
Compare two months in Kolkata
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
January has the better holiday weather in Kolkata: score 96 against 49. In January, days are 5 °C cooler than in October. January has 11 fewer rainy days. The sun shines 2 hours longer a day in January.
| Month | October | January |
|---|---|---|
| Weather score | 49 | 96better |
| Day high | 30° | 25° |
| Night low | 24° | 13° |
| Sunshine | 5.7 h | 7.7 hbetter |
| Rainy days | 13 | 2better |
| Rainfall | 139 mm | 13 mmbetter |
| Muggy days | 31 | 1better |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
Dec – Jan
15–28 °C and not too much rain
Peak heat
Mar – Jun
Highs of 33 °C or more
Rainy months
May – Oct
12 or more rainy days
Kolkata month by month
The typical weather for every month at a glance.
96January25° · 8 h
In January, Kolkata is warm: daytime highs average 25 °C, and nights cool down to about 13 °C. The sun shines for around 8 hours a day. It hardly ever rains. All in all, January is an excellent month for a holiday in Kolkata.
Kolkata in January85February29° · 8 h
In February, Kolkata is hot: daytime highs average 29 °C, and nights cool down to about 17 °C. The sun shines for around 8 hours a day. Rain is rare: about 3 days bring 22 mm in total. On about 8 days the thermometer climbs to 30 °C or more. All in all, February is an excellent month for a holiday in Kolkata.
Kolkata in February58March33° · 8 h
In March, Kolkata is very hot: daytime highs average 33 °C, and even at night it stays warm at around 22 °C. The sun shines for around 8 hours a day. Rain is rare: about 5 days bring 31 mm in total. On about 27 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a so-so month for a holiday in Kolkata.
Kolkata in March37April35° · 8 h
In April, Kolkata is very hot: daytime highs average 35 °C, and even at night it stays warm at around 25 °C. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 63 mm. On about 29 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, April is not an ideal month for a holiday in Kolkata.
Kolkata in April26May35° · 7 h
In May, Kolkata is very hot: daytime highs average 35 °C, and even at night it stays warm at around 27 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 12 rainy days and 116 mm in total. On about 30 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, May is not an ideal month for a holiday in Kolkata.
Kolkata in May18June33° · 5 h
In June, Kolkata is very hot: daytime highs average 33 °C, and even at night it stays warm at around 27 °C. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 21 days, totalling 255 mm. On about 27 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, June is not an ideal month for a holiday in Kolkata.
Kolkata in June27July31° · 4 h
In July, Kolkata is hot: daytime highs average 31 °C, and even at night it stays warm at around 26 °C. The sun is scarce, with only about 4 hours a day. It is the rainy season: rain falls on about 29 days, totalling 337 mm. On about 26 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, July is not an ideal month for a holiday in Kolkata.
Kolkata in July28August31° · 4 h
In August, Kolkata is hot: daytime highs average 31 °C, and even at night it stays warm at around 26 °C. The sun is scarce, with only about 4 hours a day. It is the rainy season: rain falls on about 29 days, totalling 311 mm. On about 24 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, August is not an ideal month for a holiday in Kolkata.
Kolkata in August30September31° · 4 h
In September, Kolkata is hot: daytime highs average 31 °C, and even at night it stays warm at around 26 °C. Expect around 4 hours of sunshine a day. It is the rainy season: rain falls on about 25 days, totalling 265 mm. On about 23 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, September is not an ideal month for a holiday in Kolkata.
Kolkata in September49October30° · 6 h
In October, Kolkata is hot: daytime highs average 30 °C, and even at night it stays warm at around 24 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 139 mm in total. On about 20 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, October is a so-so month for a holiday in Kolkata.
Kolkata in October84November28° · 7 h
In November, Kolkata is hot: daytime highs average 28 °C, and nights cool down to about 19 °C. The sun shines for around 7 hours a day. Rain is rare: about 2 days bring 24 mm in total. All in all, November is an excellent month for a holiday in Kolkata.
Kolkata in November94December26° · 7 h
In December, Kolkata is warm: daytime highs average 26 °C, and nights cool down to about 15 °C. The sun shines for around 7 hours a day. It hardly ever rains. All in all, December is an excellent month for a holiday in Kolkata.
Kolkata in DecemberKolkata compared
Put Kolkata side by side with another destination.
No destination found
Kolkata vs. Jamshedpur
In October Jamshedpur has the better holiday weather (score 58 vs. 49). During the day it is about as warm in Jamshedpur as in Kolkata.
| in October | Kolkata | Jamshedpur |
|---|---|---|
| Holiday score | 49 | 58 |
| Daytime high | 30° | 30° |
| Sunshine | 6 h | 6 h |
| Rainy days | 13 | 10 |
| Best time | Nov – Feb | Nov – Feb |
Through the year
India in October: the best places
In October, Kolkata ranks 26 among the 31 nearest destinations in this country.
- Nainital19°88
- 2Bareilly30°75
- 3Ranchi27°74
- 4Gorakhpur30°73
- 5Ayodhya30°73
- 6Bhopal31°71
- 7Lucknow31°70
- 8Varanasi31°69
- 26KolkataThis page30°49
Planning a trip to Kolkata
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Kolkata in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Kolkata has its best school-holiday weather during the Christmas holidays (score 95) and its weakest during May half-term (score 24).
- 43
Easter holidays
Mar – Apr
Fair
- 35 °C by day
- 7.8 h of sun a day
- 7 rainy days a month
Keep in mind: Peak heat, Storm season
- 24
May half-term
May – Jun
Poor
- 35 °C by day
- 6.3 h of sun a day
- 14 rainy days a month
Keep in mind: Peak heat, Frequent rain, Storm season
- 28
Summer holidays
Jul – Aug
Poor
- 31 °C by day
- 3.7 h of sun a day
- 29 rainy days a month
Keep in mind: Frequent rain
- 49
October half-term
Oct
Fair
- 30 °C by day
- 5.7 h of sun a day
- 13 rainy days a month
Keep in mind: Frequent rain, Storm season
- 95
Christmas holidays
Dec – Jan
ExcellentBest holidays
- 25 °C by day
- 7.4 h of sun a day
- 1 rainy day a month
Good for: Sightseeing & walks
Keep in mind: Storm season
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 10 h 5 min
- Distance
- 7,990 km
- Time zone
- UTC+5:30
- Jet lag
- About 5 days (5 h east)
Rule of thumb for flying east: for a few days before, go to bed and get up a little earlier, and get plenty of morning light at your destination.
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Storm season
Kolkata lies in an area that cyclones from the northern Indian Ocean can reach. The cyclone season runs from April to June and from October to December, with most storms in May and in November. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
- January
- February
- March
- April: Season
- May: Peak
- June: Season
- July
- August
- September
- October: Season
- November: Peak
- December: Season
Official season dates of the regional warning centres (NOAA, JMA, IMD, Météo-France, BoM); not a forecast.
Frequently asked questions about Kolkata
When is the best time to visit Kolkata?
The best time to visit Kolkata is from November to February. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Kolkata?
April is the warmest month, with average highs of 35 °C and nights around 25 °C. January is the coolest month at 25 °C.
When does it rain most in Kolkata?
Rain is most frequent from May to October; the wettest month is July with 337 mm. The driest month is January with 13 mm.
How many hours of sunshine does Kolkata get?
Kolkata gets around 2,240 hours of sunshine a year. The sunniest month is March with 8.0 hours a day; in August there are 3.7 hours a day.
What time zone is Kolkata in?
Kolkata uses the time zone Asia/Kolkata, at UTC+5:30 all year.
How long is the flight from London to Kolkata?
A nonstop flight from London to Kolkata takes about 10 h 5 min, for a straight-line distance of about 7,990 km.
When is cyclone season in Kolkata?
Kolkata lies in an area that cyclones from the northern Indian Ocean can reach. The cyclone season runs from April to June and from October to December, with most storms in May and in November. A direct hit on any one place is rare, but if you travel then, keep an eye on weather warnings and book flexibly.
Which school holidays are best for Kolkata?
Kolkata has its best school-holiday weather during the Christmas holidays (score 95) and its weakest during May half-term (score 24). Holiday ratings (0–100): Easter holidays 43, May half-term 24, Summer holidays 28, October half-term 49, Christmas holidays 95.
Near Kolkata
Other destinations close by.
Places with a climate like Kolkata
Destinations whose weather through the year is closest to Kolkata's – good alternatives.