Quick Summary: Tay Ninh weather runs hot year-round with a clear dry season (December–April) and wet season (May–November). The best time to visit is December to February, when rain days drop to 2–3 a month and cooler evenings make climbing Nui Ba Den more comfortable. April is the hottest month, averaging 29.5°C.
Tay Ninh sits inland on flat plains near the Cambodian border, far enough from the coast that its air lacks the sea breeze that softens the heat in places like Vung Tau. Nui Ba Den, the tallest peak in southern Vietnam, rises straight out of these plains and creates its own slightly cooler microclimate near the summit.
Tay Ninh Weather at a Glance
- Tay Ninh weather hits its hottest in April, averaging 29.5°C, with highs that can feel intense on the open plains.
- October is the coolest month on average, at 26.5°C.
- Dry season runs December–April, when rain days stay as low as 2 in February.
- Wet season runs May–November, with rain days climbing to 29 in August and September.
Best Time to Visit
December through February brings Tay Ninh’s most comfortable weather: 2–3 rain days a month, average temperatures around 26.6–27.8°C, and clearer air for views from Nui Ba Den’s cable car and summit trails. This window also lines up with the province’s biggest religious festivals at the Cao Dai Holy See.
Weather by Seasons
Dry Season (December–April): Average temperatures run 26.7–29.5°C, climbing steadily toward the April peak. Rain days stay low, from 2 in February up to 12 in April as the wet season approaches. Being inland, midday heat can feel stronger here than in coastal towns.
Wet Season (May–November): Temperatures ease slightly to 26.5–28.7°C, but rain days surge to 18–29 per month, with August and September the wettest at 29 days each. Data from Kupi.com’s Tay Ninh weather page notes that daytime highs regularly top 30°C even in the wet season, while nighttime temperatures rarely fall below 22°C.
Daily Weather & Humidity Insights
As an inland province without a coastal breeze, Tay Ninh tends to feel hotter and drier by day and can cool down more sharply after sunset than coastal southern towns — day-night swings of around 8–9°C are typical in the dry season. Humidity is lower here than in the Mekong Delta proper during the dry months (often in the 55–65% range), then climbs into the 80s during the height of the wet season. Up on Nui Ba Den, temperatures run noticeably cooler than the plains below.
What to Wear and Pack
- Breathable, lightweight clothing for hot, sunny days on the plains.
- Sturdy walking shoes if you plan to hike part of Nui Ba Den rather than take the cable car.
- A rain jacket or poncho for sudden wet-season downpours.
- Sunscreen, a hat and sunglasses — there’s little shade on open temple grounds.
- A light sweater for cooler early mornings at the mountain summit.
Essential Local Tips
- Visit the Cao Dai Holy See around the daily noon ceremony, and go early to beat both the crowds and the midday heat.
- Sudden afternoon thunderstorms are common June–September; keep an eye on the sky if you’re partway up Nui Ba Den.
- The clearest mountain views tend to fall on dry-season mornings before haze builds up later in the day. See more things to do in our our full Tay Ninh travel guide.
