Cát Bà UV Index Today
- Current UV Index0.0
- Cloud Cover00%
- Temperature00.0 ℃
Day Summary
- Max UV Index5.1
- Avg Clouds63%
- Max Temp21.3 ℃
- Peak UV at 1 PM
- Protection Required ☀️
The UV index in Cát Bà, Vietnam 
will reach a high of 5.1 today. This means a moderate level of sun exposure. See our tips below to stay safe!
Last checked: 2025-12-04
Hourly Forecast Chart
Today's Safety Tips
The sun is a bit strong. Find some shade during midday. Wear a hat, sunglasses, and use SPF 30+ sunscreen if you'll be outside for a while.
Cát Bà's UV Index
The UV index in Cát Bà, Vietnam, tends to be high, especially from March to September, often ranging between 7 and 11, indicating strong sun exposure during these months.
Weather Seasons
Seasonal patterns show a hot and humid summer from May to September with heavy rain, while winter from November to February is cooler and drier, making spring and autumn the most pleasant times to visit.
Cát Bà's Climate
Compared to the wider northern Vietnam region, Cát Bà experiences more humidity and frequent rain due to its coastal location. Neighboring countries like Laos and Cambodia typically have drier winters and less humidity overall.
Hourly UV Index Trend
See the UV index hour by hour for Cát Bà. When the level is high, it's smart to find some shade.
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