March · Vietnam
Best time to visit Cat Ba Island in March Weather, crowds & prices
Weather in Cat Ba Island in March
Average temperature 21°C, 44 mm of rain, about 7 days with 6+ hours of sunshine and 84% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
March score
7.4/10
Ranked #3 of 12 months
- Avg temp
- 21°C
- Rainfall
- 44 mm
- Humidity
- 84%
- Days with 6h+ sun
- 7
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
March in Cat Ba Island scores 7.4/10 for nature and wildlife travel - one of the top 12-month picks (#3). Expect around 21°C, 44 mm of rain, and roughly 7 days with 6+ hours of sunshine this month.
Largest island in Halong/Lan Ha Bay featuring rainforest national parks, bioluminescent plankton, and kayaking.
March holds up well in Cat Ba Island — 3rd best month
March averages 21°C (69°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.
Expect 44 mm of rain — occasional showers rather than washed-out days — alongside about 7 days with 6+ hours of sunshine and 11.9 daylight hours.
It scores 7.4/10 here, 3rd of 12 months, against 7.9/10 in the destination's best month.
Pack light clothing, a hat and real sun protection, footwear you can get muddy.
Figure on peak pricing, with crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Cat Ba Island in March?
- In March, Cat Ba Island averages 21°C, 44 mm of rain, and about 7 days with 6+ hours of sunshine. Its climate-comfort score is 7.4/10.
- Is March a good time to visit Cat Ba Island?
- March earns a 7.4/10 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 March?
- Expect about 44 mm of rain in March. Average humidity is 84% and there are about 7 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.