Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and Climate
Athens, Greece

The ancient city of Athens in Greece with a view of the Parthenon Temple at dusk
The ancient city of Athens in Greece with a view of the Parthenon Temple at dusk
Athens is known for its long, hot and dry summers and mild winters. It has a hot-summer Mediterranean climate (Koppen climate classification: Csa), with an average of 16.4" (416.6mm) of precipitation a year, the majority of which occurs in the winter months, between October and April. The rainfall during the summer months mostly occurs during the thunderstorms which take place once or twice a month.

July tends to be the hottest month, with daily average high temperature of 93.9°F (34.4°C), though western areas of the city tend to see higher temperatures due to the industrialization of the area.
Athens holds the World Meteorological Organisation record for the highest temperature ever recorded in Europe, at a scorching 118.4°F (48°C).

The best time to visit Athens, Greece, is either in the spring or autumn months. Although there is the occasional spot of rain, the average temperature in both May and October is a very pleasant 68°F (20°C) - the perfect temperature for exploring the city and surrounding area.

The worst time to visit the city is from late July to early September when the average temperature is 89.6°F (32°C), and depending on the part of the capital even more, with no clouds as a respite from the summer sun. The problem of traffic congestion in the city center mixed with this heat results in an unpleasant summer smog.
From mid-October, the weather is less uncomfortable as it is more cloudy and likely to rain than in summer, but when it does rain, sometimes it can be violent and concentrated.

Although Athens generally has less rainfall than northern Greece, thunderstorms are almost as frequent and often suffers from flooding, mainly due to human intervention. Athens can also go through some hot and dry periods, which sometimes lead to violent forest fires.

Along with being one of the coldest months of the year, with an average temperature of 50°F (10°C), January has very little sunshine and a fairly high chance of rain for Athens standards. Winter is truly at its peak in January, however, for those that live in the city life goes on as normal. The main difference is that some tourist attractions are closed, and there are generally fewer people hitting the streets.
If the cold weather on land is not enough of a deterrent, then the temperature of the water is. At a chilly 60.8°F (16°C), even the bravest swimmers are likely not to desire to venture into the water. Winter months are better for hiking and exploring then enjoying the beach. Weather in January »

February is one of the coldest months of the year, yet is still relatively mild for winter in Europe. Like January, the average temperature is 50°F (10°C), but it is one of the months where rain is most likely. Nevertheless, despite the relatively high chance of rain in Greek standards, there is also a good chance of some sunny days. Although the streets are not quite as crowded, the city is still quite alive during the winter, with pavement cafes, plenty of shopping and a popular nightlife scene.
Swimming is not a good idea in February, with an average sea temperature of 59°F (15°C), the coldest it gets all year. However, if the sun shines, trips to the beach are delightful. Weather in February »

The first signs of spring weather begin to appear. March is a great time to visit Athens before the temperatures begin to get too high. The average temperature is 53.6°F (12°C), so although a coat is likely to be needed, the winter chill starts to ease slightly.
There is generally a mix of cloudy and sunny days, and being the third rainiest month, a little rain from time to time is expected. Towards the middle of the month, the number of sunny days rises, making the days in Athens feel a bit warmer.
Although spring seems to be appearing in March, the rise in temperature is not yet detected in the waters, with an average sea temperature is 59°F (15°C), the coldest it gets during the year. Very few people are comfortable to go for a swim. Weather in March »

April brings warm, spring temperatures, with an average of 59°F (15°C). With mostly sunny days and very little chance of rain, April is when Athens start to see a slight increase in the number of visitors, as people are searching for warmer European temperatures.
The rising temperatures finally start to warm up the sea, although it still feels initially cold, and is often too cold to stay in for extended periods of time. On average, there are two days of either fog or snow in April, but it would be sporadic to see this on a trip at this time of year. Weather in April »

Spring is really in full swing in May, so unsurprisingly with the rising temperatures comes more visitors from overseas. May is the first month to show signs of the summer heat, with high temperature of a very pleasant 75.2°F (24°C). There is virtually no chance of rain in May, with 10 hours of average daily sunshine.
The sea temperature continues to rise, yet still feels relatively cool at 66.2°F (19°C). Humidity levels at this time of year are at their lowest. Weather in May »

June is when summer officially begins in Athens, with an average temperature of 75.2°F (24°C) and remaining pretty much the same throughout, with just a slight rise as the year goes on. June is a popular month for those visiting the city, as the warmer weather also means much sun and relatively little chance of rain.
All tourist attractions and facilities are now fully up and running. There is also a significant rise in sea temperature this month. At 71.6°F (22°C) the temperature is pleasant for swimming. Weather in June »

On average, the summer temperatures are at their very highest in July with an average of 80.6°F (27°C). Still, it is not unusual for temperatures to reach way over 86°F (30°C). It is slightly cooler at the start of the month, but there are long periods of sunshine with only 0.4" (10.2mm) of rain throughout the whole of July.
The average sea temperature is 75.2°F (24°C) making it great for swimming for long periods of time. Weather in July »

Although temperatures were at their very highest in July, it doesn't cool off much in August, with average temperatures still at 80.6°F (27°C). This remains consistent throughout the whole month.
At this time of year, the weather is very predictable, lots of sunshine and very little rain, which makes planning a trip very easy. The sea is also at its warmest at this time of year. Weather in August »

As autumn comes, some of the summer heat starts to fade slightly. Average temperatures are still at a pleasant 75.2°F (24°C). The amount of sunshine a day also starts to drop, with around 7 hours of sun, but there is still a low chance of rain. Going to the beach is still an attractive activity as of the sea remains heated. Weather in September »

In October, the weather starts to cool off significantly compared to the summer months, especially when night falls. It is clear that the transition from summer to winter starts to take place. The average day temperature ranges from 59°F (15°C) to 73.4°F (23°C), and the temperature decreases further still nearing the end of the month. For many, this weather is still considered pleasant, especially as the chance of rainfall is still considerably low.
The temperature of the sea in October also begins to drop, with the average sea temperature 71.6°F (22°C). This is still warm enough for a quick swim, and a trip to the beach is high on the agenda of many. Weather in October »

The temperature in Athens in November starts to get cold as winter closes in, but it is still much warmer than most of northern Europe at this time of year. The month starts bright, but as the days go on, overcast skies are much more likely, as is an increased chance of rain.
The sea in November is often still considered warm enough for swimming, with an average temperature of 68°F (20°C). Weather in November »

As expected, December is one of the coldest months in Greece's capital, yet compared to many other European countries is still relatively mild, making it a good place for a little winter sun.
The average temperature in December is 53.6°F (12°C), with a few fair, cloudy days accompanying the colder temperatures. Towards the end of the month, although temperatures drop further, the skies brighten slightly,
December on average sees 11 days of rainfall, making it the month when it is most likely to see some rain. The sea temperature is at 62.6°F (17°C) - only a very few ventures into the water at this time of year. Although the humidity levels are the highest of the year (75%), this is barely noticeable with the cooler temperatures. Weather in December »