Monthly weather averages & travel planning

Asia › 🇻🇳 Vietnam › Nha Trang
Updated: March 2026
December is a fair time to visit Nha Trang (4/10). With 8 daily sunshine hours and only 17 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 12th sunniest of the year in Nha Trang. December suits travellers visiting for indoor culture, food, and architecture rather than outdoor activities. Pack accordingly for 17 potential rain days. January offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 17 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: most accommodation categories have availability, and last-minute deals are common. The quieter streets and shorter queues can make this a genuinely enjoyable time to visit for the right type of traveller. Budget-conscious visitors will find the best value of the year in this period.
Step off the plane in Nha Trang in December and the air meets you at around 26°C, a temperature that feels genuinely welcoming after a long flight. By the time evening arrives and temperatures settle near 22°C, the city takes on a different character entirely. With 8 hours of daylight sun on offer, December gives you the raw material for a genuinely memorable trip.
26°C
79°F
Avg High
22°C
72°F
Avg Low
17 days
229 mm total
Rain Days
8h
per day avg
Sunshine
82%
Humid
Humidity
The narrow 4°C gap between daytime and overnight temperatures, characteristic of coastal cities with maritime moderation, means a single mid-layer works across the whole day. At 82% humidity, the 26°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. The UV index of 3 is low, meaning sun exposure is minimal concern and sunscreen is largely optional. Winds are calm at an average 12 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 79°F average high, 72°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Nha Trang in December means dressing for 26°C days and 22°C evenings. A light cotton tee with a casual overshirt works well at 26°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 22°C, a modest 4°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 17 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region. At 82% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Nha Trang's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
December has no major festivals or public holidays in Nha Trang, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 26°C average highs and 17 rainy days
In December, Nha Trang sits in the dry season corridor, as the ITCZ shifts away from the region and trade winds bring drier, more stable air. This produces reliably sunny days reaching 26°C, with lower humidity than the wet months. Overnight lows of 22°C offer a pleasant reprieve from the midday heat. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Nha Trang in December
December ranks 12th sunniest of the year in Nha Trang, with an average 8 daily sunshine hours. The driest months are February, March, and January. May is the hottest month (32°C avg high); January is the coolest (26°C). From here, temperatures fall 0°C into January. Compared to last month (November: 27°C high, 21 rain days), December is cooler and drier. December is one of the least sunny months, but that often means lower prices and fewer fellow tourists.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 26°C | 21°C | 10 | 10h | View |
| February | 27°C | 22°C | 6 | 11h | View |
| March | 29°C | 23°C | 9 | 11h | View |
| April | 31°C | 25°C | 12 | 11h | View |
| May | 32°C | 26°C | 23 | 11h | View |
| June | 32°C | 26°C | 24 | 11h | View |
| July | 32°C | 26°C | 24 | 10h | View |
| August | 32°C | 26°C | 24 | 10h | View |
| September | 30°C | 25°C | 26 | 9h | View |
| October | 28°C | 24°C | 26 | 9h | View |
| November | 27°C | 23°C | 21 | 9h | View |
| December | 26°C | 22°C | 17 | 8h | View |
January
10 rain days, 10h sun
February
6 rain days, 11h sun
March
9 rain days, 11h sun
April
12 rain days, 11h sun
May
23 rain days, 11h sun
June
24 rain days, 11h sun
July
24 rain days, 10h sun
August
24 rain days, 10h sun
September
26 rain days, 9h sun
October
26 rain days, 9h sun
November
21 rain days, 9h sun
December
17 rain days, 8h sun
Cities within 500 km with comparable weather conditions
Data Sources for Nha Trang
Climate normals represent 30-year averages (1991-2020). Individual years may vary.