Calcutta Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Calcutta.
Climate overview of Calcutta
Winter tends to last for only about two and a half months, with seasonal lows dipping from 12°C (54°F) to 14°C (57°F) between December and January. The lowest recorded temperature is 5°C (41°F).
Calcutta Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Calcutta - and find the best time to visit.
Monthly Temperature in Calcutta
In Calcutta, seasonal changes bring about a moderate variation in temperatures. On average, daytime temperatures range from a very hot 37°C (99°F) in April to a comfortable 27°C (81°F) in January.
Nighttime temperatures range from 27°C (81°F) in April to 14°C (57°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Calcutta
Calcutta experiences significant rainfall throughout the year, averaging 1674 mm (66 in) of precipitation annually. The seasons in Calcutta bring significant changes in precipitation. The wettest month, July, receives heavy rainfall, with an average of 350 mm (14 in) of precipitation. This rainfall is distributed across 15 rainy days.
In contrast, the driest month, December, experiences much less rainfall, totaling 10 mm (0.4 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Calcutta Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Calcutta
In Calcutta, summer days are longer and more sunny, with daily sunshine hours peaking at 8.0 hours in April. As the darker season arrives, the brightness of the sun becomes less. July sees a soft sun for only 3.5 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Water Temperature in Calcutta
The mean water temperature over the year ranges from 24°C (75°F) in January to 29°C (84°F) in June.
Water temperature over the year
Humidity in Calcutta by Month
The relative humidity is high throughout the year in Calcutta.
The city experiences its highest humidity in July, reaching 83%. In March, the humidity drops to its lowest level at 51%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Calcutta
The average wind speed over the year ranges from () to 2 m/s (4 knots). It is lower in January, October, November and December and higher in April and May. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Calcutta
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January and December
- Warmest weather: April and May
- Most sunshine: April
- Fewer rainy days: January, February, March, November and December
- Best for swimming: Any time of year. The sea stays pleasantly warm year-round.
- Wettest months: June, July, August and September, when rainfall is highest.
- Seasonal pattern: Distinct dry (November to March) and wet (June to September) seasons
Frequently asked questions about the climate in Calcutta
What is the best time to visit Calcutta?
January and December typically offer the most optimal weather in Calcutta. In contrast, March, April, May, June, July, August, September and October tend to have less optimal conditions. Calcutta has distinct dry (November to March) and wet (June to September) seasons.
What temperatures can I expect in Calcutta?
Daytime highs range from 27°C (81°F) in January to 37°C (99°F) in April. Nighttime lows range from 14°C (57°F) to 27°C (81°F).
How much rain does Calcutta get?
Annual rainfall is around 1674 mm (66 in). July is the wettest month with 350 mm (14 in), while December is the driest with 10 mm (0.4 in).
How sunny is Calcutta?
Calcutta receives around 2,222 hours of sunshine per year. April is the sunniest month with 241 hours, while July is the cloudiest with just 106 hours. Overall, Calcutta enjoys abundant sunshine.
Calcutta 3-Day Forecast
Calcutta on the map
Calcutta is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Gurugram
35°C (95°F) New Delhi34°C (93°F) Chennai
34°C (93°F) Jaipur33°C (91°F) Hyderabad30°C (86°F) Mumbai29°C (84°F) Bengaluru
28°C (82°F) Kochi28°C (82°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
A paradise called Andaman Islands
Though officially Indian, the Andamans are nearer Myanmar, Indonesia, and Thailand, resulting in amazing, budget-friendly white-sand beaches.
The 5 most beautiful monasteries in Ladakh
Explore Ladakh's spiritual essence through its incredible Buddhist monasteries. See architectural wonders, rich traditions, and serene landscapes in this guide.
Sleeping under the stars and riding camels in Rajasthan
A desert safari in Jaisalmer is definitely one of the highlights during a visit to India. Spending a night in the desert is a great adventurous bucket list experience.
Avoid mass tourism on an eco boat in the backwaters of Kerala
We can tell you now how you can avoid being surrounded by tourists and at the same time minimize your impact on the environment.