When heavy rain lands on a high tide, Kolkata drains slowly. Pick where you are travelling and when, and see the risk for that hour.
For one area and one departure hour, Jowar adds up the rain around that hour, checks whether a Garden Reach high tide falls near it, and suggests a better hour. Here is how that differs from the usual ways of checking.
Jowar uses the same kind of free forecast data as weather apps, so it is no better at predicting rain. It missed the burst on 23 September 2025. Use it to plan, then confirm with local news or someone on the road.