April weather forecast
Sylhet, Bangladesh

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Weather in April

April, serving as a precursor to the rainy season, features a stark shift in Sylhet's weather. It's distinguished by the steep increase in rainfall, reaching 175mm (6.89") dispersed over 21.3 days, representing the onset of the much-anticipated monsoon. During this month, balmy day temperatures of up to 34.4°C (93.9°F) are the norm, making it one of the hottest months of the year. Enhanced cloud cover decreases the sunlight hours despite the longer days, leading to a humid and warm atmosphere. While April distinguishes itself from March with higher temperatures and rainfall, it lays the groundwork for the approaching peaks of monsoon in the subsequent months.

Temperature

In Sylhet, the month of April registers the highest temperatures, averaging 34.4°C (93.9°F) at the peak and 22.8°C (73°F) at the lowest.

Heat index

April's average heat index is estimated at a burning hot 47°C (116.6°F). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
For the human body, perspiration is the go-to method to regulate temperature, using sweat's evaporation to dissipate warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Sylhet, the average relative humidity in April is 67%.

Rainfall

In Sylhet, in April, it is raining for 21.3 days, with typically 175mm (6.89") of accumulated precipitation. Throughout the year, there are 208.1 rainfall days, and 1868mm (73.54") of precipitation is accumulated.

Daylight

In Sylhet, the average length of the day in April is 12h and 45min.
On the first day of April, sunrise is at 5:43 am and sunset at 6:08 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 6:22 pm +06.

Sunshine

With an average of 10.5h of sunshine, April has the most sunshine of the year in Sylhet.

UV index

The months with the highest UV index are April and September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: In April, the UV index of 7 transforms into the following advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What month is the hottest in Sylhet?

With an average high-temperature of 34.4°C (93.9°F) and an average low-temperature of 22.8°C (73°F), April is the warmest month in Sylhet, Bangladesh.

How hot does it get in Sylhet in April?

In April, in Sylhet, the average high-temperature is 34.4°C (93.9°F), and the average low-temperature is 22.8°C (73°F). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in April is estimated at 47°C (116.6°F).

What is the average humidity in April in Sylhet?

In April, the average relative humidity in Sylhet, Bangladesh, is 67%.

How many days does it rain in April in Sylhet?

In Sylhet, in April, during 21.3 rainfall days, 175mm (6.89") of precipitation is typically accumulated.

How many hours of daylight does Sylhet have in April?

In Sylhet, Bangladesh, the average day length in April is 12h and 45min.

What time are sunrise and sunset in April in Sylhet?

In April, on the first day of the month, sunrise is at 5:43 am and sunset at 6:08 pm. On the last day of the month, in Sylhet, Bangladesh, sunrise is at 5:17 am and sunset at 6:22 pm +06.

What month has the most sunshine in Sylhet?

The month with the most sunshine in Sylhet, Bangladesh, is April, with an average of 10.5h of sunshine.

How long on average sun shines in April in Sylhet?

The average sunshine duration in April in Sylhet, Bangladesh, is 10.5h.

What are the months with the highest UV index in Sylhet?

The months with the highest UV index in Sylhet, Bangladesh, are April and September, with an average maximum UV index of 7.

How high is the UV index in April in Sylhet?

The average daily maximum UV index in April in Sylhet, Bangladesh, is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from 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 April
Sylhet, Bangladesh

Average temperature in April - Sylhet, Bangladesh
  • Average high temperature in April: 34.4°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 April: 22.8°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 April
Sylhet, Bangladesh

Average pressure in April - Sylhet, Bangladesh
  • Average pressure in April: 1008.6mbar

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 April
Sylhet, Bangladesh

Average wind speed in April - Sylhet, Bangladesh
  • Average wind speed in April: 6.4km/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 April
Sylhet, Bangladesh

Average humidity in April - Sylhet, Bangladesh
  • Average humidity in April: 67%

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 April
Sylhet, Bangladesh

Average rainfall in April - Sylhet, Bangladesh
  • Average rainfall in April: 175mm

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 April
Sylhet, Bangladesh

Average rainfall days in April - Sylhet, Bangladesh
  • Average rainfall days in April: 21.3 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 April /
Average sunshine in April
Sylhet, Bangladesh

Average daylight in April / Average sunshine in April - Sylhet, Bangladesh
  • Average daylight in April: 12h 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 April: 10h and 3min

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 April
Sylhet, Bangladesh

Average sunshine days in April - Sylhet, Bangladesh
  • Average sunshine days in April: 6.2 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 April
Sylhet, Bangladesh

Average UV index in April - Sylhet, Bangladesh
  • Average UV index in April: 7

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 April
Sylhet, Bangladesh

Average cloud cover in April - Sylhet, Bangladesh
  • Average cloud cover in April: 29

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 April
Sylhet, Bangladesh

Average visibility in April - Sylhet, Bangladesh
  • Average visibility in April: 9km

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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