Monsoon Window Open or Closed: Open or close the window while running the fan- what is the right way during the monsoon season?
- bySherya
- 18 Aug, 2026
Monsoon Window Open or Closed: During the monsoon season, keep windows open for a few hours during clear weather to maintain ventilation. During heavy rain, keep them closed and use an exhaust fan. This helps prevent dampness and mold.

Open the windows or keep them closed during monsoon?
Monsoon Window Open or Closed: During the monsoon season, a common question arises in every household: should the window be open or closed while the fan is running? Most people consider it safer to keep the windows closed due to the fear of rain, but this habit can actually be a major cause of increased humidity and dampness in the home.
Closed windows increase humidity.
When indoor air remains blocked, moisture cannot escape, and dampness gradually accumulates around walls, cupboards, and sofas. During the monsoon season, indoor humidity levels in many parts of India can reach 70 to 80 percent, creating a perfect environment for mold and bacteria to thrive.
Open the window only when the weather is clear.
Experts recommend opening windows and doors for a few hours after the rain stops and the weather clears. This allows fresh air to flow in and moisture to escape, which helps prevent mold growth. Simply running a fan simply recirculates the damp air inside the house, which doesn't solve the underlying problem.
Keep it closed during heavy rain.
However, when it's raining heavily, or a storm-like situation is developing, opening the windows isn't a good idea, as this could allow water to directly enter the room. During these times, it's best to keep the windows closed and use only an exhaust fan or ceiling fan to maintain light air circulation.
Pay special attention to the kitchen and bathroom.
Be sure to run an exhaust fan while cooking and keep the kitchen ventilated as much as possible. Similarly, after a shower, it's important to open the bathroom window or run an exhaust fan to remove steam, as these two areas generate the most moisture in the home.
Take care of furniture and walls too.
Avoid placing cupboards, sofas, and large furniture directly against the wall; this blocks ventilation and allows moisture to accumulate. It's best to leave a few inches of space between the wall and furniture to allow for easy ventilation.
Balance is the right way.
Overall, it's not always right to keep your windows closed, nor are they always open. Maintaining a balance according to the weather is the most effective way to protect your home from moisture, dampness, and mold during the monsoon season.






