June weather forecast
Phnom Penh, Cambodia

June welcomes the monsoon with open arms in Phnom Penh. The rainfall dramatically escalates to an average high of 177mm (6.97"), showering the city with regular, short spells of rain. The UV index stays constant at 12 throughout this month, indicative of the sunny periods interspersed between the showers. Relative humidity matches the year's peak level in correspondence with the increase in precipitation. While the wet weather might hinder uninterrupted outdoor activities, it paints a renewed and vibrant image of the city.

Temperature

Transitioning into June, Phnom Penh experiences an average high-temperature of a still tropical 33.5°C (92.3°F), marking a minor shift from the preceding month. Phnom Penh experiences a consistent average temperature of 25°C (77°F) throughout the nights in June.

Heat index

Throughout June, the heat index is evaluated at a burning hot 49°C (120.2°F). On guard: Heat exhaustion and heat cramps are predicted. Heatstroke is a potential hazard with continuous physical effort.
One should consider that heat index numbers are for shaded settings and light wind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat uptake goes beyond the body's cooling mechanisms, there's a surge in body temperature, posing health risks.

Humidity

In Phnom Penh, the average relative humidity in June is 78%.

Rainfall

In Phnom Penh, during June, the rain falls for 16.6 days and regularly aggregates up to 177mm (6.97") of precipitation. In Phnom Penh, during the entire year, the rain falls for 153.4 days and collects up to 1636mm (64.41") of precipitation.

Daylight

With an average of 12h and 48min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 05:35 and sunset at 18:21. On the last day of the month, sunrise is at 05:40 and sunset at 18:27 +07.

Sunshine

In Phnom Penh, the average sunshine in June is 6.4h.

UV index

February through October, with an average maximum UV index of 12, are months with the highest UV index in Phnom Penh. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 12 during June translates into the following guidance:
Implement all key precautions. Warding off sun damage is critical. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Use liberally and reapply a broad-spectrum SPF 30+ sunscreen every two hours, or straight away after any outdoor workout or swim.