Visitors to Ho Chi Minh City during the month of June should plan on bringing a raincoat since it will be raining some days. This month is part of the rainy season. The average maximum temperature lies around 31.0°C (87.8°F). During the night it can be very warm as well. With a water temperature of around 29.0°C (84.2°F), this is a great month to swim. You will see the sun sometimes in this month, it has 105 hours of sun.