January · Vietnam
Best time to visit Cat Ba Island in January Weather, crowds & prices
Weather in Cat Ba Island in January
Average temperature 16°C, 36 mm of rain, about 3 days with 6+ hours of sunshine and 79% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
January score
7.2/10
Ranked #4 of 12 months
- Avg temp
- 16°C
- Rainfall
- 36 mm
- Humidity
- 79%
- Days with 6h+ sun
- 3
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
January in Cat Ba Island scores 7.2/10 for nature and wildlife travel - an above-average month (#4 of 12). Expect around 16°C, 36 mm of rain, and roughly 3 days with 6+ hours of sunshine this month.
Largest island in Halong/Lan Ha Bay featuring rainforest national parks, bioluminescent plankton, and kayaking.
January in Cat Ba Island: strong conditions, 4th of 12
Temperatures hover around 16°C (61°F) — the kind of month where neither heat nor cold forces the schedule.
With around 36 mm of rain, any showers tend to pass through rather than settle in; about 3 days with 6+ hours of sunshine and 10.9 hours of daylight fill the rest.
That is 7.2/10 on the same scale — 4th of 12 months, versus 7.9/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, footwear you can get muddy.
Expect peak pricing, and this is one of the busiest months here.
Frequently asked
- What is the weather like in Cat Ba Island in January?
- In January, Cat Ba Island averages 16°C, 36 mm of rain, and about 3 days with 6+ hours of sunshine. Its climate-comfort score is 7.2/10.
- Is January a good time to visit Cat Ba Island?
- January earns a 7.2/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Cat Ba Island in January?
- Expect about 36 mm of rain in January. Average humidity is 79% and there are about 3 days with 6+ hours of sunshine.
Curated in Cat Ba Island
Tickets & experiences
Things to do in Cat Ba Island
Cat Ba Island, Vietnam. Live activities and tours from GetYourGuide, matched to this destination.