Archive · 18 Sep 2026
Rain Cools Kolkata After Hot, Humid Spell; Cyclone Alerts Rejected
Kolkata had several hot and sticky days.
Rain arrived on Thursday afternoon and evening.
About 12 millimetres of rain was recorded by 5.30pm.
Thunder and lightning accompanied the rain.
The temperature fell to about 26°C by 6.30pm.
Weather officials said stronger monsoon conditions helped produce the rain.
More cloudy weather and rain may come in the next few days.
Another weather system may form over the north Andaman Sea.
Officials said it is too early to predict whether that system will become a cyclone.
Kolkata received about 12mm of widespread rain by 5.30pm on Thursday.
The maximum temperature fell from above 34°C to around 26°C by 6.30pm.
The weather office attributed the rain to active monsoon currents, a trough and accumulated surface heat.
Cloudy skies and rain are likely in Kolkata over the next few days.
A possible Bay of Bengal low-pressure area is developing, but officials dismissed social-media cyclone alerts for now.
- Who
- Kolkata residents and India’s meteorological authorities were involved in the weather developments.
- What
- Rain ended a hot, humid spell, while a possible low-pressure system began developing over the north Andaman Sea.
- When
- The rain occurred on Thursday afternoon and evening; a more detailed forecast on the developing system may be possible after September 19.
- Where
- Kolkata and south Bengal experienced the rain; the possible system is expected to move toward the Odisha-Andhra Pradesh coast.
- Why
- Active monsoon currents, a trough and accumulated surface heat combined to produce the rain.
Official Weather Assessment
Social-Media Cyclone Alerts
Current cyclone risk
Official Weather Assessment
The meteorological office said no definitive cyclone prediction could be made yet and that a clearer forecast might be available after September 19.
Social-Media Cyclone Alerts
Social media circulated alerts about an “impending cyclone,” although the article does not provide supporting meteorological evidence for those alerts.
- Rainfall
- About 12mm recorded by 5.30pm Thursday
- Temperature change
- From just over 34°C during the day to around 26°C by 6.30pm
- Humidity
- Minimum relative humidity was 60%
- Rain forecast
- Cloudy skies and rain are likely in Kolkata over the next few days
- Developing system
- An upper-air cyclonic circulation over north Thailand may help form a low-pressure area over the north Andaman Sea around Saturday evening
- Expected movement
- The system may move west-northwest toward the south Odisha-north Andhra Pradesh coasts
- Official warning
- The meteorological office said there was not yet enough information to predict an impending cyclone