January weather forecast
Santorini, Greece

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The white houses on the Island of lovers overlooking clear blue waters, Santorini, Greece
The white houses on the Island of lovers overlooking clear blue waters, Santorini, Greece

Weather in January

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.

Frequently asked questions

What month is the coldest in Santorini?

Santorini experiences the lowest of its temperatures in January and February, when the average high-temperatures rise to 14°C (57.2°F).

What are the temperatures in Santorini in January?

January temperatures vary between a high-temperature of 14°C (57.2°F) and a low-temperature of 9°C (48.2°F).

What is the wettest month in Santorini?

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

How much does it rain in Santorini in January?

In January, in Santorini, Greece, the rain falls for 11 days. Throughout January, 114mm (4.49") of precipitation is accumulated.

How cold is the water in January in Santorini?

In Santorini, the average seawater temperature in January is 16.8°C (62.2°F). For most, swimming in 16.8°C (62.2°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

What is the average length of the day in January in Santorini?

In January, the average day length in Santorini is 10h and 1min.

What time are sunrise and sunset in January in Santorini?

On the first day of January, sunrise is at 07:29 and sunset at 17:13. On the last day of the month, sunrise is at 07:20 and sunset at 17:42 EET.

What are the months with the least sunshine in Santorini?

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

How long on average sun shines in January in Santorini?

In January, the average sunshine duration in Santorini is 4h.

What is the month with the lowest UV index in Santorini?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Santorini, Greece.

How high is the UV index in January in Santorini?

In January, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in January
Santorini, Greece

Average temperature in January - Santorini, Greece
  • Average high temperature in January: 14°C

The warmest month (with the highest average high temperature) is July (28°C).
The months with the lowest average high temperature are January and February (14°C).

  • Average low temperature in January: 9°C

The months with the highest average low temperature are July and August (22°C).
The coldest months (with the lowest average low temperature) are January and February (9°C).

Average rainfall in January
Santorini, Greece

Average rainfall in January - Santorini, Greece
  • Average rainfall in January: 114mm

The wettest month (with the highest rainfall) is January (114mm).
The driest months (with the least rainfall) are July and August (1mm).

Average rainfall days in January
Santorini, Greece

Average rainfall days in January - Santorini, Greece
  • Average rainfall days in January: 11 days

The month with the highest number of rainy days is December (12 days).
The months with the least rainy days are June, July, August and September (1 days).

Average sea temperature in January
Santorini, Greece

Average sea temperature in January - Santorini, Greece
  • Average sea temperature in January: 16.8°C

The best month for swimming (with the highest average sea temperature) is August (25.7°C).
The coldest month (with the lowest average sea temperature) is February (16.5°C).

Average daylight in January /
Average sunshine in January
Santorini, Greece

Average daylight in January / Average sunshine in January - Santorini, Greece
  • Average daylight in January: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in January: 4h

The months with the most sunshine are June and July (Average sunshine: 13h).
The months with the least sunshine are January and December (Average sunshine: 4h).

Average UV index in January
Santorini, Greece

Average UV index in January - Santorini, Greece
  • Average UV index in January: 2

The months with the highest UV index are June and July (UV index 10).
The months with the lowest UV index are January and December (UV index 2).

Santorini, Greece

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