October is meant to be the month when Bangladesh finally cools down. Instead, many people are still sweating through hot, humid days, with fans and air conditioners running late into the night. So what is going on, and how much of it is climate change?
What Is Normal for October?
Even in a normal year, October is not cool. Daytime highs in cities like Dhaka usually reach about 32°C, with very high heat and humidity. The real change is in how long the heat lingers and how intense it feels, as the country slowly drifts from the monsoon into the dry season.
Climate Change Is Raising the Baseline
As the planet warms, Bangladesh’s average temperatures climb with it. Hotter years mean that seasons which once cooled off quickly now hold on to heat for longer. The country is already seeing the pattern, since a heatwave in 2024 lasted 36 consecutive days. A warmer baseline makes even ordinary autumn days feel harsher.
Humidity Makes Heat Feel Worse
Temperature is only half the story. After the monsoon, the air is still full of moisture, so sweat does not evaporate easily and the body struggles to cool down. This means a 33°C afternoon can feel much hotter, which is why autumn heat feels so tiring.
Weaker Rainfall Means Less Cooling
Rain cools the air and the ground. For this season, the Bangladesh Meteorological Department’s August to October outlook pointed to below-normal rainfall, along with above-normal day and night temperatures earlier in the season. Less rain and fewer cloudy days let the sun heat the land for longer.
Cities Trap the Heat
Dhaka and other big cities have more concrete, less greenery and shrinking water bodies. Roads and buildings absorb heat all day and release it at night, so nights stay warm too. This urban heat island effect makes the temperature in crowded areas feel higher than in nearby villages.
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Who Suffers Most?
Outdoor workers, rickshaw pullers, construction labourers, farmers, children and older people face the highest risk. Long exposure can cause dehydration, heat exhaustion and heat stroke, and warm nights leave little room for the body to recover.
How to Stay Safe
- Drink plenty of water, even if you do not feel thirsty
- Avoid heavy work in the hottest hours of the afternoon
- Wear light, loose cotton clothes and cover your head outdoors
- Rest in shade and check on elderly neighbours and children
- Seek medical help for dizziness, confusion or very high body temperature
The Bigger Picture
One hot October does not prove anything alone, but the pattern is clear. Warmer years, humid air, uneven rainfall and crowded cities are combining to stretch the heat season. Bangladesh needs more trees, protected water bodies, heat action plans and better early warnings, so that people are ready the next time autumn refuses to cool down.
Summary: October should bring relief from the heat, but many people in Bangladesh still feel burning days and sticky nights. Rising global temperatures, high humidity, weaker rainfall and fast growing cities are the main reasons.
