Spetses Weather

The weather on the island of Spetses resembles the classic Mediterranean climate style. Like the other nearby Saronic islands, Spetses' summertime is hot to very hot, whereas its winters are a tad bit on the cold side. Most winter months are mildly cold with an increased rainfall possibility.

In brief, Spetses remains filled with sun during the summertime! Its warmest months are during the high season (July and August), while its coldest two are the first two months of the year, January and February.
Guests of Spetses that would like some peace and quiet during their visit can stop by the island during the spring or the first autumn months, given that its weather will remain warm enough to allow most popular activities, though it is better to be prepared for some rainfalls as well.

The warm Mediterranean climate is great for the high-season and off-season visitors. Tourists are fewer during the off-season, even though Spetses is frequently visited by residents of Attica and Peloponnese!
Plus, most shops and businesses close in October and are available again around the start of April.

Below, you can see the average temperatures in Spetses by month. We have also gathered information regarding the weather by month.

Average High & Low Air Temperature (in °C/°F)

Months Air High Air Low Sea Rainfall Sunshine
April 19.5°C/67.1°F 9.2 °C/48.6°F 15.8°C/60.4°F 8 days 10 Hours
May 24.9°C/76.8°F 13.6°C/56.5°F 18.6°C/65.5°F 5 days 12 Hours
June 29.6°C/85.3°F 18.7 °C/65.7°F 22.7°C/72.9°F 2 days 13 Hours
July 32.6°C/90.7°F 22.2°C/72°F 25.8°C/78.4°F 1 day 13 Hours
August 32.4 °C/90.3°F 22.7°C/72.9°F 26.4°C/79.5°F 2 days 12 Hours
September 28.4°C/83.1°F 19°C/66.2°F 25.2°C/77.4°F 2 days 10 Hours
October 24.1°C/75.3°F 14.5°C/58.2°F 22.4°C/72.3°F 6 days 8 Hours

 

Weather by month

Discover the weather in Spetses by month:
January | February | March | April | May | June | July | August | September | October | November | December

January

January is the coldest month of Spetses Island. It is relatively humid and a few rainfalls, plus most stores are shut down due to the low season.

The average temperature is 9.3 °C/48.7°F (maximum 13.4°C/56.1°F | minimum 4.7 °C/40.5°F)
On the coldest nights, the temperature may drop to -3.9°C/25°F.
On the warmest days, the temperature may reach 22.2°C/72°F.
The sunshine lasts approximately 4 hours.
Humidity reaches 70%, while the mean speed of the wind is around 14 kph (8.7 mph).
The mean sea temperature is about 15.6°C/60.1°F; hence, swimming is not recommended.

February

February's weather forecast bears many similarities to the month of January.

The average temperature is 9.9°C/49.8°F (maximum: 14.2°C/57.6°F | minimum 5°C/41°F).
On the coldest nights, the temperature may drop to -2.7°C/27°F.
On the warmest days, the temperature may reach 21.1°C/70°F.
The sunshine lasts approximately 6 hours.
Humidity reaches 72%, while the mean speed of the wind is around 14.8 kph (9.2 mph).
The mean sea temperature is about 15.1°C/59.2°F; hence, swimming is not recommended.

March

March sets off spring, though it is still one of the colder months, despite the difference in temperature from February. The sun's rays help Spetses warm up, but the island remains on the colder side during the evenings.

The average temperature is 11.3°C/52.3°F (maximum 15.7°C/60.3°F | minimum 6.4°C/43.5°F).
On the coldest nights, the temperature may drop to -2.2°C/28°F.
On the warmest days, the temperature may reach 22.8°C/73°F.
The sunshine lasts approximately 9 hours.
Humidity reaches 67%, while the mean speed of the wind is around 15 kph (9.3 mph).
The mean sea temperature is about 15.3°C/59.5°F; hence, swimming is not recommended.

April

April in Spetses is warmer than March, but the sea temperature is still on the cold side.

The average temperature is 14.6°C/58.3°F (maximum 19.5°C/67.1°F | minimum 9.2 °C/48.6°F).
On the coldest nights, the temperature may drop to 0°C/32°F.
On the warmest days, the temperature may reach 27.8°C/82°F.
The sunshine lasts approximately 10 hours.
Humidity reaches 62%, while the mean speed of the wind is around 13.3 kph (8.3 mph).
The mean sea temperature is about 15.8°C/60.4°F; hence, swimming is not recommended.

May

The month of May sees the waters of Spetses warm up slightly for the first time in the year! It is recommended that one visits Spetses in May in order to avoid the island's crowded period, plus all accommodation prices are much more affordable.

The average temperature is 19.7 °C/67.5°F (maximum: 24.9°C/76.8°F | minimum: 13.6°C/56.5°F).
On the coldest nights, the temperature may drop to 7.2°C/45°F.
On the warmest days, the temperature may reach 35°C/95°F.
The sunshine lasts approximately 12 hours.
Humidity reaches 55%, while the mean speed of the wind is around 12.1 kph (7.5 mph).
The mean sea temperature is about 18.6°C/65.5°F; hence, the waters are cool.

June

June is a great month for Spetses Island. There is little to no rain, and the month signals the beginning of the tourist season! Waters are now fine for an extended swim, while it is the perfect summer month to enjoy the sun of Spetses without mass waves of tourists and sky-high price tags.

The average temperature is 24.6°C/76.3°F (maximum 29.6°C/85.3°F | minimum 18.7 °C/65.7°F).
On the coldest nights, the temperature may drop to 11.1°C/52°F.
On the warmest days, the temperature may reach 37.8°C/100°F.
The sunshine lasts approximately 13 hours.
Humidity reaches 50%, while the mean speed of the wind is around 13.3 kph (8.3 mph).
The mean sea temperature is 22.7°C/72.9°F; hence, the waters are warm.

July

The month of July is one of the two hottest months in Spetses, while being the start of the high season, the island's prices rise up, and rooms are full! It is recommended that you book your ferry tickets and your preferred accommodation about 2 or 3 months before arriving. Plus, the sea temperature is at its finest!

The average temperature is 27.9°C/82.2°F (maximum 32.6°C/90.7°F | minimum 22.2°C/72°F).
On the coldest nights, the temperature may drop to 15°C/59°F.
On the warmest days, the temperature may reach 40°C/104°F.
The sunshine lasts approximately 13 hours.
Humidity reaches 46%, while the mean speed of the wind is around 17.2 kph (10.7 mph).
The mean sea temperature is 25.8°C/78.4°F; hence, the waters are very warm.

August

August alongside July keeps the island's temperature high, while rainfalls in Spetses are now a rare occurrence! During the peak of summertime and the high season, Spetses is full of guests and tourists, while prices remain high.

The average temperature is 27.8°C/82.1°F (maximum 32.4 °C/90.3°F | minimum 22.7°C/72.9°F).
On the coldest nights, the temperature may drop to 16.1°C/61°F.
On the warmest days, the temperature may reach 41.1°C/106°F.
The sunshine lasts approximately 12 hours.
Humidity reaches 48%, while the mean speed of the wind is around 16.9 kph (10.5 mph).
The mean sea temperature is 26.4°C/79.5°F; hence, the waters are very warm.

September

The start of the autumn season, September is not far from the temperatures of June, given that the island and its sea waters remain very warm! Keep in mind that there are fewer dry heatwaves than in the high summer season, and the prices of goods and accommodation are a bit lower than in August and July.

The average temperature is 23.9°C/75°F (maximum 28.4°C/83.1°F | minimum 19°C/66.2°F).
On the coldest nights, the temperature may drop to 8.9°C/48°F.
On the warmest days, the temperature may reach 37.8°C/100°F.
The sunshine lasts approximately 10 hours.
Humidity reaches 55%, while the mean speed of the wind is around 16.1 kph (10 mph).
The mean sea temperature is 25.2°C/77.4°F; hence, the waters are very warm.

October

October signals a significant dip in temperature, though the island's sea waters are still fantastic for swimming. In addition, most shops and establishments remain open during the first couple weeks of the month.

The average temperature is 19.3°C/66.74°F (maximum 24.1°C/75.3°F | minimum 14.6°C/58.3°F).
On the coldest nights, the temperature may drop to 7.8°C/46°F.
On the warmest days, the temperature may reach 32.8°C/91°F.
The sunshine lasts approximately 8 hours.
Humidity reaches 64%, while the mean speed of the wind is around 13 kph (8.1 mph).
The mean sea temperature is 22.4°C/72.3°F; hence, the waters are warm.

November

The month of November is the start of the off-season since the temperatures in Spetses' air and waters are distinctively lower, while all tourist-based shops are no longer available.

The average temperature is 15.8°C/60.4°F (maximum 19.9°C/67.8°F | minimum 11.2°C/52.2°F).
On the coldest nights, the temperature may drop to 2.2°C/36°F.
On the warmest days, the temperature may reach 27.2°C/81°F.
The sunshine lasts approximately 7 hours.
Humidity reaches 69%, while the mean speed of the wind is around 13.5 kph (8.4 mph).
The mean sea temperature is 19.4°C/66.9°F; hence, the waters are a little bit cool.

December

December is a return to cold months for Spetses since temperatures are low, sea waters are not ideal for a swim, and the sun's rays are fewer throughout the daytime.

The average temperature is 12.3°C/54.1°F (maximum 16.1°C/61°F | minimum 8°C/46.4°F).
On the coldest nights, the temperature may drop to -2.22°C/28°F.
On the warmest days, the temperature may reach 22.2°C/72°F.
The sunshine lasts approximately 5 hours.
Humidity reaches 68%, while the mean speed of the wind is around 12.5 kph (7.8 mph).
The mean sea temperature is about 16.9°C/62.4°F; hence, swimming is not quite recommended.

MORE GENERAL INFO ABOUT SPETSES