October weather forecast
Sylhet, Bangladesh

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Weather in October

October brings forth a significant reduction in rainfall in Sylhet, indicating the retreat of the monsoon. Following the weather transitions in September, this change gears the weather patterns towards drier, clearer skies. The dispersion in rainfall drops considerably to 111mm (4.37"), taking place over only 18.3 days. Consequently, the decrease in overall rainfall and cloud cover marks October as the beginning of drier seasons. This change in weather, therefore, symbolizes an end to the monsoon season and a return to the dry period that continues until January.

Temperature

The onset of October manifests an average high-temperature of a still hot 30.5°C (86.9°F), demonstrating a minor variation from the preceding month. In October, Sylhet experiences a temperature dip to an average of 21.5°C (70.7°F) at night.

Heat index

October's heat index is estimated at an extremely hot 41°C (105.8°F). Implement additional safety measures to avoid heat cramps and heat exhaustion. Persistent activity might trigger heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are largely significant for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

The average relative humidity in October is 85%.

Rainfall

In Sylhet, Bangladesh, during October, the rain falls for 18.3 days and regularly aggregates up to 111mm (4.37") of precipitation. Throughout the year, in Sylhet, Bangladesh, there are 208.1 rainfall days, and 1868mm (73.54") of precipitation is accumulated.

Daylight

In Sylhet, Bangladesh, the average length of the day in October is 11h and 35min.
On the first day of October, sunrise is at 5:44 am and sunset at 5:39 pm. On the last day of the month, sunrise is at 5:59 am and sunset at 5:12 pm +06.

Sunshine

The average sunshine in October is 7.9h.

UV index

In October, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In October, a regular UV index of 6 translates into these guidelines:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

Is it hot in Sylhet during October?

In Sylhet, 30.5°C (86.9°F) is the average high-temperature and 21.5°C (70.7°F) is the average low-temperature during October. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in October is estimated at 41°C (105.8°F).

What is the average humidity in October in Sylhet?

The average relative humidity in October in Sylhet, Bangladesh, is 85%.

How much does it rain in Sylhet in October?

In Sylhet, Bangladesh, during October, the rain falls for 18.3 days and regularly aggregates up to 111mm (4.37") of precipitation.

What is the average length of the day in October in Sylhet?

In Sylhet, Bangladesh, the average day length in October is 11h and 35min.

When is the sunrise / sunset in October in Sylhet?

In October, on the first day of the month, sunrise is at 5:44 am and sunset at 5:39 pm. On the last day of the month, in Sylhet, Bangladesh, sunrise is at 5:59 am and sunset at 5:12 pm +06.

How long on average sun shines in October in Sylhet?

In Sylhet, Bangladesh, the average sunshine duration in October is 7.9h.

What is the UV index intensity in October in Sylhet?

In October, the average daily maximum UV index in Sylhet, Bangladesh, is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Sylhet, Bangladesh

Average temperature in October - Sylhet, Bangladesh
  • Average high temperature in October: 30.5°C

The warmest month (with the highest average high temperature) is April (34.4°C).
The month with the lowest average high temperature is December (25.5°C).

  • Average low temperature in October: 21.5°C

The month with the highest average low temperature is June (25.3°C).
The coldest month (with the lowest average low temperature) is January (12°C).

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Average pressure in October
Sylhet, Bangladesh

Average pressure in October - Sylhet, Bangladesh
  • Average pressure in October: 1009.9mbar

The month with the highest atmospheric pressure is January (1014.9mbar).
The month with the lowest atmospheric pressure is July (1002mbar).

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Average wind speed in October
Sylhet, Bangladesh

Average wind speed in October - Sylhet, Bangladesh
  • Average wind speed in October: 4.6km/h

The windiest month (with the highest average wind speed) is July (7.7km/h).
The calmest months (with the lowest average wind speed) are November and December (4.3km/h).

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Average humidity in October
Sylhet, Bangladesh

Average humidity in October - Sylhet, Bangladesh
  • Average humidity in October: 85%

The month with the highest relative humidity is July (89%).
The month with the lowest relative humidity is March (55%).

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Average rainfall in October
Sylhet, Bangladesh

Average rainfall in October - Sylhet, Bangladesh
  • Average rainfall in October: 111mm

The wettest month (with the highest rainfall) is June (353mm).
The driest month (with the least rainfall) is January (4mm).

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Average rainfall days in October
Sylhet, Bangladesh

Average rainfall days in October - Sylhet, Bangladesh
  • Average rainfall days in October: 18.3 days

The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (2.4 days).

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Average daylight in October /
Average sunshine in October
Sylhet, Bangladesh

Average daylight in October / Average sunshine in October - Sylhet, Bangladesh
  • Average daylight in October: 11h and 4min

The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).

  • Average sunshine in October: 7h and 5min

The month with the most sunshine is April (Average sunshine: 10h and 30min).
The month with the least sunshine is July (Average sunshine: 6h and 54min).

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Average sunshine days in October
Sylhet, Bangladesh

Average sunshine days in October - Sylhet, Bangladesh
  • Average sunshine days in October: 10.4 days

The months with the most sunshine days are January and December (27.6 days).
The month with the least sunshine days is June (0.4 days).

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Average UV index in October
Sylhet, Bangladesh

Average UV index in October - Sylhet, Bangladesh
  • Average UV index in October: 6

The months with the highest UV index are April and September (UV index 7).
The months with the lowest UV index are January and December (UV index 5).

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Average cloud cover in October
Sylhet, Bangladesh

Average cloud cover in October - Sylhet, Bangladesh
  • Average cloud cover in October: 33

The month with the most cloud cover is July (Cloud cover 62).
The month with the least cloud cover is January (Cloud cover 8).

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Average visibility in October
Sylhet, Bangladesh

Average visibility in October - Sylhet, Bangladesh
  • Average visibility in October: 8km

The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are July, August and September (7km).

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Sylhet, Bangladesh

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