Is It Monsoon in Cao Bang, Vietnam? Rainfall and Weather by Month

Is It Monsoon?
Cao Bang, Vietnam JANUARY
15°
Shoulder season
12° to 18°
Cold & Foggy
The coldest month of the year, with little sun, frequent drizzle, and fog common at night and in early morning.
🧥 Heavy warm layers🌫️ Morning fog
17°
Shoulder season
13° to 21°
Grey & Drizzly
Still cold and often foggy, with some of the least sunshine of the whole year.
🧥 Heavy warm layers☂️ Drizzle likely
20°
Peak season
17° to 24°
Spring Arrives
Warming up and pleasant, though the sky often stays grey before the sun becomes more frequent.
🧥 Light layers☔ Light rain jacket
24°
Shoulder season
20° to 28°
Warm & Stormy
Warmer and closer to summer, with the first thunderstorms of the year building by afternoon.
🧥 Light layers⛈️ Afternoon storms
27°
Shoulder season
23° to 32°
Monsoon Approaches
Hot and increasingly sultry, with rain becoming a regular presence and a low but real typhoon risk.
☔ Umbrella essential🥵 Heat building
29°
Off-peak season
24° to 33°
Deep Monsoon
Hot, muggy, and wet, with rain a near-daily fixture and typhoon season underway.
☔ Heavy rain gear🥵 Heat protection
29°
Off-peak season
24° to 33°
Peak Heat & Rain
The wettest month of the year, with heat spiking past 38°C in the breaks between storms.
☔ Heavy rain gear🥵 Extreme heat possible
29°
Off-peak season
24° to 33°
Steady Monsoon
Nearly as wet as July, hot and humid with frequent heavy downpours.
☔ Heavy rain gear🦟 Insect repellent
27°
Shoulder season
23° to 32°
Rains Ease
Rain starts easing from summer's peak, though the air stays warm and humid.
☔ Umbrella handy🦟 Insect repellent
24°
Peak season
20° to 29°
Autumn Arrives
Cooling fast with noticeably less rain, one of the more comfortable months of the year.
🧥 Light layers✨ Best sightseeing weather
21°
Peak season
16° to 26°
Best of Autumn
Mild and comparatively dry, though windy days and a lingering typhoon risk are still possible.
🧥 Warm layers💨 Windy days possible
16°
Shoulder season
12° to 21°
Winter Begins
Cooler and often grey again, though milder than the depths of January and February.
🧥 Heavy warm layers🌫️ Morning fog
Drag through the year Jan
Jan
Feb
⭐️
Mar
Apr
May
Jun
Jul
Aug
Sep
⭐️
Oct
⭐️
Nov
Dec
This month
Rainfall
25 mm
9 rainy days this month
Sunshine
2 hrs/day
15% of daylight hours
Humidity
82%
Air feels heavy and sticky
Wind
12 km/h
Light, barely noticeable
Rainfall
25 mm
9 rainy days this month
Sunshine
2 hrs/day
15% of daylight hours
Humidity
77%
Air feels heavy and sticky
Wind
13 km/h
Light, barely noticeable
Rainfall
51 mm
10 rainy days this month
Sunshine
2.5 hrs/day
19% of daylight hours
Humidity
75%
Air feels heavy and sticky
Wind
14 km/h
Light, barely noticeable
Rainfall
84 mm
12 rainy days this month
Sunshine
4 hrs/day
31% of daylight hours
Humidity
78%
Air feels heavy and sticky
Wind
14 km/h
Light, barely noticeable
Rainfall
185 mm
15 rainy days this month
Sunshine
5 hrs/day
38% of daylight hours
Humidity
81%
Air feels heavy and sticky
Wind
12 km/h
Light, barely noticeable
Rainfall
236 mm
17 rainy days this month
Sunshine
5 hrs/day
38% of daylight hours
Humidity
85%
Air feels heavy and sticky
Wind
11 km/h
Light, barely noticeable
Rainfall
269 mm
19 rainy days this month
Sunshine
5.5 hrs/day
42% of daylight hours
Humidity
86%
Air feels heavy and sticky
Wind
11 km/h
Light, barely noticeable
Rainfall
259 mm
18 rainy days this month
Sunshine
6 hrs/day
46% of daylight hours
Humidity
85%
Air feels heavy and sticky
Wind
10 km/h
Light, barely noticeable
Rainfall
140 mm
12 rainy days this month
Sunshine
5.5 hrs/day
42% of daylight hours
Humidity
83%
Air feels heavy and sticky
Wind
11 km/h
Light, barely noticeable
Rainfall
84 mm
10 rainy days this month
Sunshine
4.5 hrs/day
35% of daylight hours
Humidity
80%
Air feels heavy and sticky
Wind
12 km/h
Light, barely noticeable
Rainfall
46 mm
7 rainy days this month
Sunshine
4 hrs/day
31% of daylight hours
Humidity
81%
Air feels heavy and sticky
Wind
12 km/h
Light, barely noticeable
Rainfall
20 mm
6 rainy days this month
Sunshine
3.5 hrs/day
27% of daylight hours
Humidity
77%
Air feels heavy and sticky
Wind
12 km/h
Light, barely noticeable
★★★ peak season, ★★☆ decent shoulder months, ★☆☆ true off-peak, based on rain frequency, heat, and haze.
Seasons at a glance
🌟
Peak season: Mar, Oct, Nov
Cao Bang's most reasonable stretch, though even these months come with real caveats. Late October into November catches the tail of the monsoon easing off, with occasional windy days and a small lingering typhoon risk. March sits in early spring, pleasantly warm but still often grey, before the first pre-monsoon thunderstorms arrive by April.
🌤️
Shoulder season: Jan, Feb, Apr, May, Sep, Dec
This tier spans real variety, since there's no easy pick here. December is milder and a touch sunnier than deep winter. January and February are the coldest, foggiest, most drizzle-prone months, with the least sunshine of the year. April is warm and closer to summer, with thunderstorms starting to build. May and September sit at the edges of the summer monsoon, hot and increasingly wet.
Off-peak season: Jun, Jul, Aug
The heart of the summer monsoon, when rain falls on the majority of days, July especially, and heat can spike past 38°C between storms. Typhoon season also runs through this stretch, adding another layer of unpredictability.
Good to know
🚌
No airport, and it is a long ride from Hanoi
Cao Bang has no airport of its own. The nearest is Hanoi's Noi Bai, about 282km away, a 6 to 9 hour bus ride or roughly 5 hours by minivan.
🛂
Ban Gioc sits right on the China border
Bring your original passport, not a copy, for checkpoints near the falls. Crossing the river that marks the border, even by swimming, is illegal, and drones need advance permission.
🕳️
Nguom Ngao Cave pairs easily with the waterfall
Just a short distance from Ban Gioc, this cave system runs over 2km, though only about 950 meters is open to visitors.
🌫️
Winter mornings often bring fog
Fog is common at night and in the early morning during the cold months, so plan waterfall or viewpoint visits for later in the day if clear photos matter.
Top attractions
1
Ban Gioc Waterfall
Vietnam's largest waterfall and one of the biggest transnational falls in the world, spanning 300 meters across the border with China.
2
Nguom Ngao Cave
A limestone cave system near Ban Gioc with striking stalactite and stalagmite formations along its lit walkway.
3
Pac Bo
The site where Ho Chi Minh returned to Vietnam in 1941 after decades abroad, including the cave he lived in and the stream he named after Lenin.