June weather forecast
Batam, Indonesia

June brings subtle changes to Batam's weather forecast, offering a slight respite from May's relatively high rainfall. This month is known for consistent tropical temperatures and slight variations in humidity levels. Rainfall tapers to 107mm (4.21"), bringing about a relative dry spell in an otherwise moist climatic schedule. As June progresses towards July, a further decrease in rainfall is foreseen, making July a comparatively dry month. The characteristic tropical climate does not falter, ensuring Batam remains warm and vibrant.

Temperature

Batam's average high-temperature marks a still hot 30.7°C (87.3°F) with the advent of June, closely mirroring that of the preceding month. Batam's nighttime temperature in June consistently rests at a moderately hot 27°C (80.6°F).

Heat index

For most parts of June, the heat index is computed to be a torrid 38°C (100.4°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Excessive relative humidity disturbs the body's typical cooling process by reducing evaporation, leading to a decrease in body cooling rate and an increase in the sensation of warmth. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In June, the average relative humidity is 75%.

Rainfall

In Batam, during June, the rain falls for 21.7 days and regularly aggregates up to 107mm (4.21") of precipitation. Throughout the year, there are 267.5 rainfall days, and 1342mm (52.83") of precipitation is accumulated.

Daylight

The month with the longest days is June, with an average of 12h and 12min of daylight.
On the first day of the month, sunrise is at 05:56 and sunset at 18:07. On the last day of June, sunrise is at 06:02 and sunset at 18:13 WIB.

Sunshine

The average sunshine in June is 9.8h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in Batam. The months with the lowest UV index in Batam are January through December, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: In June, the maximum UV index of 7 translates into these guidelines:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.