UV index today  UV Index

Alonnisos UV Index Today

Day Summary

The UV index in Alonnisos, Greece Flag of Greece will reach a high of 8.6 today. This means a veryhigh level of sun exposure. See our tips below to stay safe!

Last checked: 2025-08-01

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.

Alonnisos's UV Index

The UV index in Alonnisos is generally high during summer, often reaching 9 or above, indicating strong sun exposure. In winter, the UV index drops to low or moderate levels, around 2 to 4.

Weather Seasons

UV index

Seasonally, Alonnisos has hot, dry summers with temperatures often above 30°C. Winters are mild and wetter, with temperatures usually between 10°C and 15°C. Spring and autumn are pleasant with moderate temperatures and less rain.

Alonnisos's Climate

Compared to mainland Greece, Alonnisos has milder winters due to its island location. It tends to be cooler in summer than cities like Athens. Nearby islands have similar weather, but Alonnisos is usually a bit windier because of its position in the Aegean Sea.

Hourly UV Index Trend

See the UV index hour by hour for Alonnisos. When the level is high, it's smart to find some shade.

Disclaimer

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