UV Index
UV Index
Today's UV index in Calcutta, India 
will be up to 11.8, indicating a extreme level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-07-30
UV index at 11.8 in Calcutta means extreme risk: limit outdoor time especially from 10 a.m. to 4 p.m., actively seek shade, wear protective clothing, broad-brimmed hat, apply SPF 30+ sunscreen every 2 hours, and wear UV-blocking sunglasses. Watch for bright surfaces like water and snow increasing UV exposure.
The UV index in Calcutta is generally high, especially from March to June, often ranging from 8 to 12, indicating strong sun exposure during these months. It decreases during the winter season from November to February.
Calcutta has a tropical wet-and-dry climate with a hot summer from March to June, a rainy monsoon season from June to September, and a cooler, dry winter from November to February. Spring and autumn are short transitional periods.
Compared to other parts of India, Calcutta experiences more humidity due to its proximity to the Bay of Bengal. It has more rainfall than many northern inland cities but less than the heavy monsoon areas in northeastern India and Bangladesh.
See the UV index hour by hour for Calcutta, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.