January weather forecast
Santorini, Greece

January sees tolerably cool temperatures in Santorini, Greece, with the seas relatively warm in comparison. The beginning of the year is marked by the highest rainfall, 114mm (4.49") on average, and a frequent visitor for 11 days. The weather is mostly cloudy with longer nights providing merely 10 hours of daylight. The short days may leave one wishing for that warm Mediterranean sunshine, which only averages 4 hours per day. A UV index of 2 indicates a generally lower risk of overexposure to UV radiation.

Temperature

Santorini sees its lowest temperatures during January and February, with an average high-temperature of 14°C (57.2°F).

Rainfall

January is the month with the most rainfall in Santorini. Rain falls for 11 days and accumulates 114mm (4.49") of precipitation.

Sea temperature

In Santorini, Greece, the average seawater temperature in January is 16.8°C (62.2°F).
Note: In water with a temperature of 16.8°C (62.2°F), swimming is not a joy for most people. The challenge of controlling breathing increases as the temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

In Santorini, the average length of the day in January is 10h and 1min.
On the first day of the month, sunrise is at 07:29 and sunset at 17:13. On the last day of January, sunrise is at 07:20 and sunset at 17:42 EET.

Sunshine

January and December, with an average of 4h of sunshine, are months with the least sunshine in Santorini, Greece.

UV index

The months with the lowest UV index in Santorini are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in January interprets into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.