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Cát Bà UV Index Today

Day Summary

The UV index in Cát Bà, Vietnam Flag of Vietnam will reach a high of 10.8 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!

Last checked: 2025-08-31

Hourly Forecast Chart

Today's Safety Tips

The risk is very high. It's best to stay out of the sun between 10 a.m. and 4 p.m. If you must be outside, wear protective clothing and apply sunscreen often.

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

UV index

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.

Disclaimer

* The information on this page about the UV index in Cát Bà is for educational purposes only. It is not a substitute for professional medical advice. Always consult a doctor for any health concerns.