Bangkok's monsoon season (May–October) creates cleaning challenges that don't exist in dry months. Humidity near 100%, daily downpours, and airborne mold spores change the game.
The humidity problem
During monsoon, indoor humidity can reach 80%+ even with aircon running. At that level, mold grows on bathroom grout in days, clothes in closets feel damp, and wood furniture can warp. The dry-season cleaning routine is not enough.
Balcony drain management
Clogged balcony drains are the #1 monsoon problem in Bangkok condos. Water backs up, seeps under doors, and damages floors or downstairs units (expensive juristic office complaints). Check drains every 2 weeks during monsoon.
The monsoon weekly routine
- Wipe bathroom grout twice weekly
- Run bathroom exhaust fan for 15 minutes after every shower
- Check balcony drain every 2 weeks
- Wipe window frames weekly (rain driving moisture through seals)
- Run aircon in 'dry' mode 1 hour daily for dehumidification
- Rotate clothes in closets to prevent musty smells
- Check refrigerator seals for mold monthly
Aircon maintenance
Aircons run harder during monsoon (cooling AND dehumidifying), which accelerates filter clogging. Professional coil cleaning at the start of rainy season extends lifespan dramatically.
Mold prevention
- Silica gel packets in closets, drawers, shoe cabinets
- Moisture absorbers in bathrooms (refill monthly)
- Open windows briefly on sunny days — air circulation kills mold spores
- Do not leave wet clothes hanging indoors
- Check under furniture that never moves — mold grows where air can't reach
The rainy-season deep clean
Consider booking a deep clean in mid-June (after monsoon starts) and again in early October (before it ends). These catch the mold and humidity issues that accumulate during peak rainy months.
Frequently Asked Questions
What's the best dehumidifier for Bangkok condos?
A compact 10–20L dehumidifier ($100–200) handles most 1-bedroom condos. Run 2–4 hours daily during monsoon for noticeable results.
CLEANROVA monsoon-season deep cleans include mold treatment, balcony drain service, and aircon filter cleaning as standard.
