May weather forecast
Batam, Indonesia

May in Batam sees the weather lingering around similar parameters as in April. High humidity continues to be a constant, accompanied by considerable rainfall and warm temperatures. May sees a slight escalation in rainfall, with volumes rising to 115mm (4.53"), lending a distinctly tropical appeal to the city. As the month progresses, there is a noticeable decrease in rainfall. As May transitions to June, residents anticipate the easing of rainfall, leading to a less humid and wet atmosphere which characterises the weather in June.

Temperature

May stands out as Batam's warmest month, with an average high-temperature of 31.2°C (88.2°F) and a low-temperature of 27.3°C (81.1°F).

Heat index

The average heat index in May is evaluated at a blistering 40°C (104°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. 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. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. The body faces dehydration threats when its cooling efforts are outpaced by excessive heat gain.

Humidity

The average relative humidity in May is 75%.

Rainfall

In Batam, in May, during 23.6 rainfall days, 115mm (4.53") of precipitation is typically accumulated. In Batam, Indonesia, during the entire year, the rain falls for 267.5 days and collects up to 1342mm (52.83") of precipitation.

Daylight

The average length of the day in May in Batam is 12h and 10min.
On the first day of May, sunrise is at 05:56 and sunset at 18:05. On the last day of the month, sunrise is at 05:56 and sunset at 18:06 WIB.

Sunshine

May has the most sunshine of the year, with an average of 10.7h of sunshine.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Batam. January through December, with an average maximum UV index of 7, are months with the lowest UV index in Batam. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A daily maximum UV index of 7 in May translates into the following instructions:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.