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 shift into May records an average high-temperature of a still torrid 35°C (95°F), subtly varied from April's 35.3°C (95.5°F). During the nights in May, Barisal observes an average low-temperature of 27.7°C (81.9°F).

Heat index

Throughout May, the heat index is appraised at a life-threatening hot 50°C (122°F). Note: Heat exhaustion and heat cramps are probable. Heatstroke can follow with prolonged activity.
Records show heat index calculations are tailored for shaded regions and mild winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in May is 70%.

Rainfall

In Barisal, Bangladesh, during May, the rain falls for 15.8 days and regularly aggregates up to 54mm (2.13") of precipitation. In Barisal, during the entire year, the rain falls for 148.8 days and collects up to 501mm (19.72") of precipitation.

Daylight

In May, the average length of the day is 13h and 14min.
On the first day of the month, sunrise is at 5:25 am and sunset at 6:25 pm. On the last day of May, 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. A UV Index reading of 8 to 10 represents a very high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In May, a regular UV index of 8 translates into these guidelines:
Be constantly cautious; skin and eyes can be quickly affected if left unprotected. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.