June weather forecast
Dumai, Indonesia

The first month of the summer, June, is still a hot month in Dumai, Indonesia, with temperature in the range of an average high of 32.8°C (91°F) and an average low of 24.4°C (75.9°F).

Temperature

June stands out as Dumai's warmest month, with an average high-temperature of 32.8°C (91°F) and a low-temperature of 24.4°C (75.9°F).

Heat index

During June, the heat index is appraised at a burning hot 47°C (116.6°F). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
When assessing, remember that heat index measurements are for light winds and shaded spots. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in June in Dumai is 79%.

Rainfall

In Dumai, in June, during 20.9 rainfall days, 83mm (3.27") of precipitation is typically accumulated. In Dumai, Indonesia, during the entire year, the rain falls for 286.4 days and collects up to 1200mm (47.24") of precipitation.

Sea temperature

May and June, with an average sea temperature of 30.2°C (86.4°F), are months with the warmest seawater in Dumai.
Note: Partaking in water activities can feel less exhilarating when temperatures climb over 30°C (86°F).

Daylight

The month with the longest days in Dumai, Indonesia, is June, with an average of 12h and 12min of daylight.
On the first day of June in Dumai, sunrise is at 06:05 and sunset at 18:18. On the last day of the month, sunrise is at 06:11 and sunset at 18:24 WIB.

Sunshine

In June, the average sunshine in Dumai, Indonesia, is 8.4h.

UV index

January through September and November, with an average maximum UV index of 7, are months with the highest UV index in Dumai. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A daily maximum UV index of 7 in June translates into the following instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Stay cautious! Sand and water reflections increase UV radiation potency.