UV Index
UV Index
Today's UV index in Kefalonia, Greece 
will be up to 7.3, indicating a high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-09
With Kefalonia's UV index reaching 7.3, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
Kefalonia's UV index is high during summer, often reaching 8 to 10, indicating strong sun exposure. In winter, the UV index drops to low levels around 1 to 3. Spring and autumn have moderate UV levels near 4 to 6.
The island experiences hot, dry summers with temperatures often above 30°C (86°F). Winters are mild and wetter, with temperatures rarely falling below 10°C (50°F). Spring and autumn are warm with occasional rain, making them pleasant seasons.
Compared to mainland Greece, Kefalonia has milder winters and slightly cooler summers due to its island position. It generally receives more rain than the drier southern parts of Greece. Compared to nearby islands, its weather is similar but often a bit wetter.
See the UV index hour by hour for Kefalonia, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.