April · Vietnam
Best time to visit Cat Ba Island in April Weather, crowds & prices
Weather in Cat Ba Island in April
Average temperature 24°C, 73 mm of rain, about 12 days with 6+ hours of sunshine and 84% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
April score
6.3/10
Ranked #6 of 12 months
- Avg temp
- 24°C
- Rainfall
- 73 mm
- Humidity
- 84%
- Days with 6h+ sun
- 12
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
April in Cat Ba Island scores 6.3/10 for nature and wildlife travel - an above-average month (#6 of 12). Expect around 24°C, 73 mm of rain, and roughly 12 days with 6+ hours of sunshine this month.
Largest island in Halong/Lan Ha Bay featuring rainforest national parks, bioluminescent plankton, and kayaking.
April in Cat Ba Island — workable with trade-offs
Trail conditions at 24°C (76°F) favour early starts and shaded routes in April; midday is for water breaks, not for exposed climbs.
Budget for roughly 73 mm of rain this month — a flexible day or two helps — with about 12 days with 6+ hours of sunshine and 12.5 hours of daylight to work around it.
That is 6.3/10 on the same scale — 6th of 12 months, versus 7.9/10 for the best month here.
Pack light clothing, a hat and real sun protection, a packable rain layer, footwear you can get muddy.
Budget for mid-season pricing, and crowds are moderate.
If your dates are flexible, November is materially better in Cat Ba Island — 1.6 points higher on the same scale.
Frequently asked
- What is the weather like in Cat Ba Island in April?
- In April, Cat Ba Island averages 24°C, 73 mm of rain, and about 12 days with 6+ hours of sunshine. Its climate-comfort score is 6.3/10.
- Is April a good time to visit Cat Ba Island?
- April earns a 6.3/10 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 April?
- Expect about 73 mm of rain in April. Average humidity is 84% and there are about 12 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.