If you plan to visit Kos in January, the weather is typically alright, with an average high temperature of +14°C during the day and approximately 7 sunny days. Expect some rainy, though, as there are typically 17 rainy days in the month and around 142 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Good to know:
January is usually the coldest month of the year in Kos;
January is usually the driest month of the year in Kos
Average weather
☀️
+14°C
Avg. max. temperature
0°C
Min.
+22°C
Max.
142 mm
Total precipitation
71%
Avg. humidity
6 m/s
Avg. wind
7 ☀️
Sunny Days
7 ⛅️
Cloudy
17 🌦
Rainy
Our opinion: Kos has OK weather in January.
Average temperature in Kos in January
Here are the expected maximum, average and minimum temperatures in Kos for January based on the historical data.
Last Year
Historical Data
Going from a maximum of +19°C during the day to a minimum of +9°C during the night, the temperature in January averages around +17°C.
The average maximum temperature goes down 40% by the end of the month, compared with the beginning of the month, from +17°C to +13°C.
Is Kos warm or cold in January?
Kos is typically mild in January.
Maximum temperatures go down compared to the previous month from +16°C to +14°C. The minimum temperature also goes down from +13°C to +12°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
January is the coldest month in Kos, here is the comparison with other months:
Water temperature in Kos in January
Water in Kos in January is Fresh. It varies from +16°C to +20°C, with an average of +18°C.Note that the air temperature is lower than the water temperature, averaging around +14°C.
In January, water temperatures are average relative to the rest of the year:
The warmest water temperatures in Kos are reached in August, when the average sea temperature rises to +26°C. The coldest water temperatures are in February, with an average of +17°C.
Can you swim in Kos in January?
Water temperature (+18°C) in Kos in January might be suited for short swims and acclimatized swimmers might find it refreshing.
🦭
Cold
Below +16°C
🏄♂️
Fresh
16°C - 21°C
🏊
Comfortable
21°C - 25°C
👙
Warm
25°C - 28°C
🔥
Very warm
+28°C and up
Think of bringing a full-body or shorty wetsuit (3mm-5mm thickness) to provide insulation and maintain body heat.
Climate in Kos in January
Kos weather looks like this, on average, in January and the surrounding months.
December
January
February
Avg. temperature
+16°C
+14°C
+14°C
Min. temperature
+3°C
0°C
+2°C
Max. temperature
+23°C
+22°C
+26°C
Rainfall
146 mm
142 mm
102 mm
Wind
6 m/s
6 m/s
7 m/s
Avg. water temperature
+19°C
+18°C
+17°C
Humidity
73%
71%
72%
Air pressure
1016 HPa
1016 HPa
1015 HPa
Sunny days
7
7
7
Cloudy days
6
7
6
Rainy days
17
17
15
Snowy days
0
0
0
January weather is still as ok as in December.It’s getting colder in January. From +16°C in the day, the average maximum temperature lowers to +14°C.As January arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 146 mm to 142 mm.It feels drier, as humidity decreases from 73% to 71%.The average wind speed doesn’t change much during January, staying around 6 m/s.The amount of sunny days stay about the same, averaging 7 sunny days during the month.
February brings much the same weather, it remains ok.
Wind speed in Kos in January based on historical data.
Last Year
Historical Data
The average wind speed is 6 m/s getting up to 11 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Kos is gradually increasing during January, going from 3 m/s to 7 m/s over the course of the month.
Rain
Amount of rainfall in mm during January in Kos based on historical data.
Last Year
Historical Data
Typically, there is a 39% chance of rain on an average day in January, with total rainfall of approximately 127 mm. The maximum amount of rainfall per day is around 49 mm, which is moderate rain.January is a pretty wet month with over 12 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
January is one of the rainiest months in Kos, here is a comparison with other months, total mm:
Kos wettest month is December, where a typical day has a 55% chance of precipitation and 146 mm of rainfall per day. July, on the other hand, is the driest month with a mere 0% chance of precipitation and 0 mm of rainfall per day.
How was the weather last January in Kos?
This is the weather in Kos in January 2023:
1 January
☀️
+17°C
2 January
☀️
+19°C
3 January
☀️
+18°C
4 January
☀️
+16°C
5 January
☀️
+17°C
6 January
☀️
+16°C
7 January
☀️
+18°C
8 January
☁️
+16°C
9 January
☀️
+18°C
10 January
🌧️
+18°C
11 January
🌧️
+16°C
12 January
🌧️
+15°C
13 January
🌧️
+15°C
14 January
🌧️
+16°C
15 January
☁️
+15°C
16 January
☀️
+18°C
17 January
☀️
+19°C
18 January
☁️
+19°C
19 January
☁️
+19°C
20 January
🌧️
+17°C
21 January
☁️
+18°C
22 January
☁️
+19°C
23 January
☀️
+19°C
24 January
☀️
+19°C
25 January
☀️
+17°C
26 January
☁️
+18°C
27 January
🌧️
+17°C
28 January
🌧️
+17°C
29 January
☁️
+16°C
30 January
☀️
+14°C
31 January
☁️
+13°C
In January 2023 Kos had 14 sunny days, 9 cloudy days, and 8 rainy days. The average maximum temperature was +17°C, with an absolute maximum of +19°C and a minimum of +13°C. The average humidity was 70%, with a maximum of 92% and a minimum of 53%. The average wind speed was 6 m/s, with a maximum of 18 m/s and a minimum of 0 m/s.
Are you planning a trip in January?
Climate Change over Years
This is how Kos climate have been changing during last 43 years period.
The climate in Kos in January has not changed much over the last 43 years.
The average temperature was the lowest in 1992 (+19°C) and the highest in 2018 (+24°C). The driest year was 1992 with only 335 mm of rainfall, and the wettest year was 2019 with 1062 mm.
FAQ
Frequently asked questions about the weather in Kos in January:
Is January a good time to visit Kos?
It’s always a good time to visit Kos, but the weather is changeable in January, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Kos in January?
January has mild temperatures in Kos. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!
Can you swim in Kos in January?
In general, you can swim in Kos in January, if you want to, at an average water temperature of +18°C. But it will feel quite cool, and some precautions are necessary to ensure your comfort and safety.
Is Kos rainy in January?
Kos is often rainy in January. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Kos in January?
Usually, it’s not very sunny in Kos in January, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Kos, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.