Monthly Weather at My Son Sanctuary Vietnam

January

January marks the gentle tail end of the winter monsoon. The atmosphere is refreshingly cool and crisp, though overcast skies frequently linger overhead. While light, scattered drizzle can occur, the pleasant temperatures make it a fantastic month for exploring the open-air archaeological trails comfortably.

• Average Temperature: 

• Average Rainfall: ~100 mm (3.9 inches)

February

February is widely favored by travelers seeking ideal weather. Clear blue skies return, humidity drops significantly, and the sun provides beautiful, bright natural illumination without intense heat. Rainfall plunges to its absolute lowest point, ensuring dry paths and excellent conditions for outdoor photography.

• Average Temperature: 

• Average Rainfall: ~25 mm (1.0 inch)

March

March brings beautifully stable and warm spring conditions across the valley. The weather remains mostly dry and exceptionally clear, with rain becoming a rarity. This represents the peak travel window to appreciate the architecture under comfortable, sunny conditions before summer temperatures rise.

• Average Temperature: 

• Average Rainfall: ~30 mm (1.2 inches)

April

Temperatures begin a steady upward march as spring draws to a close. April remains highly favorable, offering long hours of bright sunshine and minimal rain. However, the midday sun starts feeling noticeably stronger against the exposed bricks, making early morning visits smart.

• Average Temperature: 

• Average Rainfall: ~45 mm (1.8 inches)

May

May introduces the true tropical summer, driving up both ambient temperatures and sticky humidity levels. Though skies stay clear and storms are unusual, the heavy solar radiation bakes the valley floor, requiring visitors to carry plenty of drinking water and sun protection.

• Average Temperature: 

• Average Rainfall: ~75 mm (3.0 inches)

June

June brings peak summer heat waves to central Vietnam. The surrounding mountain amphitheater blocks breezes and traps hot air, resulting in intense midday temperatures. Visiting during the earliest morning hours is essential to explore the monuments before heat exhaustion sets in.

• Average Temperature:

• Average Rainfall: ~60 mm (2.4 inches)

July

The punishing summer heat shows no signs of slowing down through July. The ancient tower ruins absorb solar energy throughout the long, blazing days. While mostly sunny, the late afternoons occasionally bring brief, sudden heat-lightning showers that provide a temporary drop in temperature.

• Average Temperature: 

• Average Rainfall: ~90 mm (3.5 inches)

August

August stays hot and highly humid, though increased cloud formations begin filtering the harsh afternoon sun. Sudden, heavy downpours become more common toward evening, serving as the initial warning sign that the annual wet monsoon season is gathering strength.

• Average Temperature: 

• Average Rainfall: ~150 mm (5.9 inches)

September

September welcomes the official arrival of the wet monsoon cycle. Temperatures drop slightly from their summer peaks, but overall rainfall volumes surge dramatically. Extended, heavy cloudbursts occur frequently, saturating the jungle soil and making stone walkways slippery underfoot.

• Average Temperature:

• Average Rainfall: ~380 mm (15.0 inches)

October

October is historically the wettest, most turbulent month in the region. Torrential rainstorms dominate the calendar, occasionally accompanied by regional tropical depressions. The massive volume of precipitation can cause low-lying streams in the valley to swell, occasionally impacting site access.

• Average Temperature:

• Average Rainfall: ~580 mm (22.8 inches)

November

The monsoon maintains high intensity throughout November, delivering persistent rain showers and much cooler air to the valley. While tourist crowds drop to their lowest annual levels, visitors must prepare for wet clothing, damp conditions, and muddy trails.

• Average Temperature:

• Average Rainfall: ~430 mm (16.9 inches)

December

Rainfall begins to steadily decline by late December as the monsoon winds weaken. Temperatures fall to their lowest annual levels, creating a very refreshing, cool atmosphere. Scattered gray clouds and light drizzle persist, but the worst of the flooding risk passes.

• Average Temperature:

• Average Rainfall: ~235 mm (9.3 inches)