May weather forecast
Barisal, Bangladesh

May can be pinpointed as the start of the wet season in Barisal, with distinct spikes in rainfall, humidity, and cloud coverage. The temperature drops slightly from the peak of April, indicating a transition towards the rainy season. This month brings the highest relative humidity of the year, reaching up to 70%, leading to a significant increase in cloud coverage. Nonetheless, the sunlight duration remains high, revealing a stark contrast of occurrences in the atmospheric conditions. As this period progresses, wind speed increases providing some respite from the otherwise sultry weather.

Temperature

The onset of May in Barisal marks an average high-temperature of a still sweltering 35°C (95°F), hardly differing from April's 35.3°C (95.5°F). In May, Barisal's temperature tends to fall to an average low of 27.7°C (81.9°F) during the night.

Heat index

In May, the heat index is computed to be a blazing hot 50°C (122°F). Warning: Heat cramps and heat exhaustion are anticipated. Heatstroke is a risk with ongoing activity.
In terms of the heat index, values are set with light wind and shade conditions in mind. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

The average relative humidity in May is 70%.

Rainfall

In Barisal, in May, it is raining for 15.8 days, with typically 54mm (2.13") of accumulated precipitation. Throughout the year, in Barisal, Bangladesh, there are 148.8 rainfall days, and 501mm (19.72") of precipitation is accumulated.

Daylight

In May, the average length of the day is 13h and 14min.
On the first day of May, sunrise is at 5:25 am and sunset at 6:25 pm. On the last day of the month, sunrise is at 5:13 am and sunset at 6:39 pm +06.

Sunshine

In May, the average sunshine is 10.1h.

UV index

With an average maximum UV index of 8, May is the month with the highest UV index in Barisal. A UV Index reading of 8 to 10 represents a very high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum UV index of 8 during May translates into these guidelines:
Being unprotected puts skin and eyes at risk of rapid damage. Always be safe. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Boost your sun resistance with garments that are densely woven yet spacious.