Climate and monthly weather forecast
Olympia, Greece


The climate of Olympia

Olympia, nestled in the Peloponnese region of Greece, enjoys a Mediterranean climate with hot summers—designated as Csa under the Köppen climate classification. This ancient city experiences a significant variation in temperature, daylight hours, and rainfall throughout the year.

With an annual high temperature fluctuating between 14°C in the cooler months of January and February to 30°C in the hotter months of July and August, Olympia displays significant seasonal temperature swings. Alongside this, low temperatures wander from 6°C in the winter months to 19°C in the height of summer. The city's rainfall follows a similar seasonal pattern, with the driest months falling between June and August, peaking at a mere 8mm, while the wettest months occur towards the end and beginning of the year, where rainfall extends to dramatic 148mm in December.

Olympia also registers sharp discrepancies regarding daylight and sunshine hours. While December only receives a meagre 9.6 daylight hours, June basks in a generous 14.7 hours, reaching a maximum of 13 sunshine hours in July, double the 5 sunshine hours experienced in the darker months of December and January. Finally, the UV index demonstrates a steady increase from 2 in winter to a zenith of 10 in the heart of summer.

The best time to visit Olympia

With its Mediterranean climate, Olympia thrives in the warmth of summer, particularly in July. Here, visitors can appreciate the longest daylight hours and highest sunshine levels, coupled with low rainfall. Despite the most considerable UV Index of 10, temperatures remain comfortable, ranging from 30°C during the day to 19°C in the cooler nights. Therefore, for someone seeking sun-soaked days and comfortable evenings, the best time to visit would be in the height of the Grecian summer.

The worst time to visit Olympia

Winter poses adverse conditions for those considering a visit to Olympia, with December ranking as the least favourable month. Visitors will encounter minimal daylight hours and sunshine, coinciding with the year's highest rainfall of 148mm across 14 days, making outdoor exploration challenging. Additionally, the lowest temperatures of the year often fall between 15°C to 7°C, contributing to the overall unfavorable weather conditions.

Spring weather in Olympia

Spring in Olympia sees a gradual rise in temperature and an increase in daylight and sunshine hours. As the city bids farewell to winter, March witnesses the temperature rise from 14°C in the daytime to 16°C by May, with the temperatures at night increasing from 6°C to 13°C. Additionally, rainfall lessens from 70mm in March to a scanty 22mm by May, allowing for pleasant outdoor activities.

Summer weather in Olympia

Summer brings about a change in Olympia, with an escalation in temperature and sunshine hours. The season begins with a high daytime temperature of 23°C in June, which climbs to 30°C by August — the nocturnal lows being a comfortable 16°C to 19°C. Olympia savors an incredibly dry period with minimal rainfall, from 8mm to 6mm, and sports the year's highest daylight and sunshine hours.

Autumn weather in Olympia

The advent of Autumn marks a cooling period in Olympia. Temperatures during the day fall from 28°C in September to 19°C in November, mirrored by a decline in nighttime lows from 16°C to 10°C. Predictably, rainfall begins its ascent from 27mm in September, peaking at 131mm in November, while daylight and sunshine hours commence their gradual winter descent.

Winter weather in Olympia

Winter sees Olympia enveloped in its coldest climes, with December and January recording a high of 15°C and a nighttime low of 6°C, further dropping to 7°C in February. The city registers the highest rainfall during these cooler months, with 148mm in December gradually tapering off to 93mm in February. Furthermore, this period sees the least daylight and sunshine hours, contributing to the overall colder and darker winter atmosphere.

Weather in January

Weather conditions in Olympia, Greece in January indicate the start of the year with a mix of chilly temperatures and notable rainfall. The lowest temperature settles at 6°C while the highest barely touches 14°C. Distinctly, the region experiences an impressive precipitation of 116mm, setting out January as the third rainiest month of the year. Weather in January »

Weather in February

February in Olympia ushers in somewhat improved weather conditions compared to January, with slightly reduced precipitation and marginally increased daylight hours. This is a transition month, with a loss of 23mm in rainfall from the previous month, receiving only 93mm. Weather in February »

Weather in March

With the arrival of March, the weather in Olympia begins to gradually veer towards the warmer side, the landscape embracing the expected Spring aesthetics. A congregation of more sunshine hours and a notable drop in rainfall from previous months gives March a refreshing feel. Weather in March »

Weather in April

Olympia in April leaves the vestiges of winter behind and starts to adopt the fragrance of spring. In comparison to March, this month is characterized by more welcoming weather, bringing an increase in daylight and sunshine hours. Weather in April »

Weather in May

May sees a remarkable shift in weather, laying a warm and sunny carpet for the foreseeable summer. In Olympia, the month is marked with vibrant blue skies and an evident increase in temperature compared to April. A significant decrease in rain, totaling a meager 22mm, makes May one of the driest months of the year. Weather in May »

Weather in June

The weather profile for June in Olympia celebrates the arrival of summer showcasing the highest sunshine hours thus far, accompanied by rising temperature levels. There is a visible reduction in rainfall as the dry season starts to take hold of the region. Weather in June »

Weather in July

Climbing temperatures and continuous long sunny days award July as the quintessential summer month in Olympia. The rainfall reaches its lowest point in the year, recording a near-negligible 6mm of precipitation. The city basks in the warmest weather as compared to the previous months, ideal for dipping into the clear Mediterranean waters. Weather in July »

Weather in August

The weather in August in Olympia continues the summer trend with consistent heat and minimal rainfall, strikingly similar to the pattern observed in July. In fact, it ties with July for the warmest month boasting 30°C maximum temperature, coupled with a marginal increase in minimum temperature (from 18°C to 19°C). Weather in August »

Weather in September

As September rolls in, Olympia experiences a subtle shift in weather. While the city carries forth some of August's warmth, this month ushers in the first signs of the impending autumn. Still, the area remains dry with an average rainfall of 27mm, creating ideal conditions to explore the Grecian ruins. Weather in September »

Weather in October

The cool breeze of October signals the start of autumn in Olympia with temperatures beginning to dip but remaining relatively comfortable. Although still sunny, the city experiences more rainfall than September, observing a considerable increase of about 75mm. Weather in October »

Weather in November

November in Olympia sees the temperature continuing to fall, paving the way for the upcoming winter season. The rainfall records a significant increase, reaching a total of 131mm which is amongst the highest of the year. Along with the increased rainfall, daylight hours decrease, painting a serene picture of the city. Weather in November »

Weather in December

Finally, December descends, welcoming the winter season in Olympia. As the coldest month of the year, the city experiences a drop in both maximum and minimum temperature levels. December emerges as the wettest month with precipitation levels reaching a peak at 148mm. Weather in December »


What part of the year is the coldest in Olympia?

Olympia experiences its coldest period in January and February, averaging a high-temperature of 14°C.

How many days does it rain in Olympia?

Throughout the year, in Olympia, Greece, there are 91 rainfall days, and 776mm of precipitation is accumulated.

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

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

When is Daylight Saving Time (DST) in Olympia?

On Sunday, 26. March 2023, at 03:00, Daylight Saving Time starts, and the time zone changes from EET to EEST. Daylight Saving Time ends on Sunday, 29. October 2023, at 04:00, and the time zone reverts from EEST to EET.

When are the longest days in Olympia?

June has the longest days of the year in Olympia, with an average of 14h and 42min of daylight.

What is the warmest month in Olympia?

Olympia's warmest season falls during July and August, averaging a high-temperature of 30°C.

What is the driest month in Olympia?

July is the month with the least rainfall. Rain falls for 1 days and accumulates 6mm of precipitation.

What month has the most sunshine in Olympia?

The month with the most sunshine in Olympia, Greece, is July, with an average of 13h of sunshine.

When is the highest UV index in Olympia?

July is the month with the highest UV index, with an average maximum UV index of 10.

What is the wettest month in Olympia?

The month with the most rainfall in Olympia, Greece, is December, when the rain falls for 14 days and typically aggregates up to 148mm of precipitation.

What is the month with the shortest days in Olympia?

December has the shortest days of the year in Olympia, Greece, with an average of 9h and 36min of daylight.

What is the month with the least sunshine in Olympia?

The month with the least sunshine is December, with an average of 4h of sunshine.

Average rainfall
Olympia, Greece

Average rainfall - Olympia, Greece

The wettest month (with the highest rainfall) is December (148mm).
The driest month (with the least rainfall) is July (6mm).


Average rainfall days
Olympia, Greece

Average rainfall days - Olympia, Greece

The month with the highest number of rainy days is December (14 days).
The months with the least rainy days are July and August (1 days).


Average daylight / Average sunshine
Olympia, Greece

Average daylight / Average sunshine - Olympia, Greece

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

The month with the most sunshine is July (Average sunshine: 13h).
The month with the least sunshine is December (Average sunshine: 4h).


Olympia, Greece

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