August Weather in Spetses, Greece

Last updated: August 21, 2025

In August, Spetses boasts a delightful Mediterranean climate, with maximum temperatures soaring to 34°C (93°F) and a comfortable average of 27°C (81°F). The evenings are pleasantly warm, with minimum temperatures around 23°C (73°F). While the month sees only 6 mm (0.2 in) of precipitation over just one day, the humidity level of 63% adds a soft touch to the balmy atmosphere. This combination of warmth and minimal rainfall makes Spetses an ideal destination for sun-seekers and outdoor enthusiasts alike.

August Temperature in Spetses

In August, Spetses basks in the height of summer, with temperatures reaching their peak. You can expect minimum temperatures around 23°C (73°F), just right for warm evenings, while average highs hit a sizzling 34°C (93°F). With the average temperature settling at 27°C (81°F), it’s the perfect time to enjoy the island’s stunning beaches and vibrant outdoor cafes. This month marks a distinct transition from the milder early summer months, as the warmth continues to intensify, inviting visitors to embrace the sun-soaked days and balmy nights that define Spetses in August.

August Weather in Spetses: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Spetses, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Spetses, August typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec535556606774808177706458
Data source: Temperature data for Spetses generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Spetses

In August, Spetses experiences a noticeable dip in precipitation, characterized by only 6 mm (0.2 in) of rain over just one day. This marks a continuation of the dry spell that begins in July, when rainfall is virtually absent. As the peak summer month, August typically sees low precipitation levels, aligning with the island's warm and sunny climate that attracts numerous visitors. The trend of decreasing rainfall throughout the summer culminates here before a slight uptick in September, highlighting Spetses' allure as a destination for sun-seekers. As the season shifts, the expected increase in precipitation in the following months reminds us that autumn is just around the corner.

August Precipitation Trends in Spetses

The chart displays monthly precipitation patterns in Spetses, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Spetses, August typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec535535251192632285555
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Spetses

In August, Spetses, Greece experiences its lowest humidity level of the year at a refreshing 63%, providing a welcome respite from the moister months earlier. As we analyze the trends throughout the year, it's evident that humidity gradually decreases from a high of 76% in January to this summer low, creating an inviting atmosphere for beachgoers and sun-seekers. The most humid months are observed in the colder season, notably around May with 77%, while the summer months of July and August showcase a clear decline, making them ideal for outdoor activities. As September rolls in, a slight increase in humidity to 65% signals the gentle shift toward autumn, but August remains the pinnacle of comfort with its delightful dryness.

August Average Humidity in Spetses

This chart illustrates the average monthly humidity levels in Spetses, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Spetses is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%74%75%77%72%68%63%65%72%75%76%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Spetses

In August, Spetses, Greece, experiences its peak UV Index of 10, firmly landing in the very high exposure category. This consistent level of intensity mirrors the previous months of June and July, indicating that beachgoers must remain vigilant to protect their skin from sunburn, with a burn time of just 15 minutes. Following the trend, the UV Index will decrease slightly in September, yet the residual intensity still calls for caution. Travelers are advised to equip themselves with sunscreen and protective clothing to enjoy the sun safely during this beautiful summer month. For detailed insights, check the Spetses UV Index.

Maximum UV Index Levels in Spetses for August

The chart shows the monthly maximum UV Index (UVI) for Spetses in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Spetses typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568101010108743
Data source: Spetses August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Spetses

In August, Spetses, Greece, basks in a generous 394 hours of sunshine, making it one of the sunniest months of the year. As summer reaches its peak, the days remain bright and warm, complemented by the island's vibrant atmosphere. This is part of a remarkable trend where sunlight steadily increases from January's low of 216 hours, steadily climbing to a high of 422 hours in July before slightly tapering off in August. The ensuing months still enjoy substantial sunshine, with September offering 347 hours, ensuring that the lingering warmth of summer can be savored well into autumn. This consistent abundance of sunlight not only invites beachgoers and sun-seekers but also paints Spetses as a heavenly summer escape.

Monthly Sunshine Duration in Spetses: August Highlighted

The August sunshine duration represents the total number of hours Spetses experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec216h263h334h347h400h410h422h394h347h320h268h258h
Data source: Spetses August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Spetses During August

In Spetses, Greece, the month of August boasts an impressive 96% chance of sunny weather, making it one of the sunniest times of the year. As summer reaches its peak, August mirrors the sun-soaked July, which also enjoys a substantial 96% likelihood of clear skies. This trend highlights the region’s delightful climate during the summer months, with May and June progressively increasing in sunshine to 75% and 79%, respectively. As the season advances, the probability of sunshine remains consistently high, ensuring that those visiting in August can relish in the warmth and vibrant atmosphere of this picturesque island. With such favorable weather, August is undoubtedly the perfect time for sun-seekers to experience all that Spetses has to offer.

Percentage of Sunny Days in August in Spetses

The chart illustrates the percentage of sunny days in Spetses throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Spetses experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec51%67%61%58%75%79%96%96%79%57%41%57%
Data source: Spetses August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Spetses in August

In August, Spetses basks in 13 hours of daylight, marking a slight decline from the sun-soaked hours of the previous months. Following the peak sunlight of 14 hours in June and July, the gradual reduction hints at the approaching transition to autumn. This month still offers plenty of sunshine for beachgoers and outdoor enthusiasts, maintaining a vibrant summer atmosphere. As daylight begins to wane, it sets the stage for a beautiful twilight that complements the warm Mediterranean evenings, allowing visitors to relish the lingering summer magic before the days grow shorter in September.

Average Daylight Hours in Spetses for August

The chart illustrates the variation in daylight duration in Spetses throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 54m10h 48m11h 58m13h 9m14h 10m14h 40m14h 24m13h 31m12h 22m11h 11m10h 9m9h 37m
Data source: Spetses daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Spetses

In August, the winds in Spetses, Greece, are gentle, averaging 3.7 m/s (8 mph), providing a subtle caress perfect for leisurely seaside strolls. This slight decrease from the more robust breezes of early summer, which peak in July at 3.8 m/s (9 mph), hints at the transition towards autumn. As the month progresses, the whisper of the wind becomes a delightful backdrop to the vibrant summer atmosphere, encouraging both locals and visitors to savor the warmer days. Interestingly, as summer ends and September approaches, the wind picks up again, averaging 4.4 m/s (10 mph), suggesting the island’s readiness for the dynamic changes of the fall season. With each shift in wind speed, Spetses offers a unique blend of tranquility and nature's refreshing touch.

Average August Wind Speed in Spetses

The chart displays monthly wind speed patterns in Spetses, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.94.74.54.03.53.03.83.7 m/s4.45.34.75.5
Data source: Spetses August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Spetses Compares to Other Months

Weather in Spetses varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Spetses, focusing on differences in temperature, rainfall, humidity, and UV levels.

When comparing the weather in August and January, stark contrasts emerge. August boasts significantly warmer temperatures, with minimums around 23°C (73°F) and daily averages reaching 27°C (81°F), while the peak can soar to a sweltering 34°C (93°F). In contrast, January presents a much cooler climate, with minimum temperatures dipping to 3°C (38°F) and an average of only 12°C (53°F), topping out at 21°C (69°F). Precipitation also varies greatly; August experiences minimal rain, just 6 mm (0.2 in) over one day, while January sees considerably more, with 53 mm (2.1 in) of rain spread across eight days. Additionally, the humidity in January is higher at 76%, compared to August’s 63%. For more detailed insights, check out Spetses weather in January.

August and February present contrasting weather experiences. In August, temperatures are warm with a minimum of 23°C (73°F) and averaging 27°C (81°F), reaching highs of up to 34°C (93°F). With only 6 mm (0.2 in) of precipitation spread over just one day, the month boasts a relatively moderate humidity of 63%. Conversely, February features significantly cooler temperatures, with a minimum of 5°C (41°F) and an average of 13°C (55°F), peaking at 18°C (64°F). This month experiences much higher rainfall of 55 mm (2.1 in) over seven days, alongside increased humidity levels at 75%. For those interested in more detailed February weather patterns, please visit Spetses weather in February.

When comparing the weather in August and March, there is a stark contrast in temperature and precipitation. August boasts warm temperatures with a minimum of 23°C (73°F) and an average of 27°C (81°F), reaching up to a maximum of 34°C (93°F). Conversely, March experiences much cooler conditions, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 19°C (66°F) and an average of just 13°C (56°F). Additionally, August is relatively dry, with only 6 mm (0.2 in) of precipitation over 1 day, while March is much wetter, receiving 35 mm (1.4 in) of rain across 4 days. Both months also show different humidity levels, with August at 63% and March slightly higher at 74%. For more specific details about weather conditions during March, you can visit Spetses weather in March.

The weather in August is notably warmer and drier compared to April. With average temperatures reaching around 27°C (81°F) and a maximum of 34°C (93°F), August offers a summer climate that is perfect for outdoor activities. In contrast, April experiences cooler temperatures, averaging 16°C (60°F) and peaking at 22°C (72°F), along with more frequent rainfall totaling 25 mm (1.0 in) over four days. Additionally, humidity levels are slightly higher in April at 75%, compared to 63% in August. For more detailed information, you can check Spetses weather in April.

When comparing the weather in August and May, it's clear that August is significantly warmer, with average temperatures reaching 27°C (81°F) and highs soaring to 34°C (93°F). In contrast, May experiences milder temperatures, with an average of 20°C (68°F) and a maximum of 26°C (79°F). Humidity levels are also notably different; August has a lower humidity of 63%, while May's humidity is higher at 77%. Additionally, despite having similar days of precipitation, August sees less rainfall overall with only 6 mm compared to May's 11 mm. For more details on the weather in May, you can visit Spetses weather in May.

In comparing the weather of August and June, August tends to be warmer with average temperatures reaching 27°C (81°F) and a maximum of 34°C (93°F), while June's temperatures are typically milder, averaging 24°C (75°F) with a maximum of 29°C (85°F). Additionally, humidity levels are slightly lower in August at 63%, compared to June’s 71%. Precipitation is also less frequent in August, with only 6 mm falling over 1 day, whereas June experiences 9 mm of rain across 2 days. For more detailed information, you can check Spetses weather in June.

In comparing the weather between July and August, we see that both months maintain a warm climate, but August tends to be slightly hotter. The minimum temperature in August is 23°C (73°F), just a degree higher than July's minimum of 22°C (72°F). While both months have similar average temperatures around 27°C (81°F), August reaches a higher maximum temperature of 34°C (93°F) compared to July's 33°C (92°F). In terms of precipitation, August experiences a slight increase with 6 mm (0.2 in) over one day, whereas July had a dry month with only 2 mm (0.1 in) and no rainy days. Additionally, humidity levels are lower in August at 63%, compared to July's 68%. For more detailed information, you can check Spetses weather in July.

In August, temperatures are generally warmer, with a minimum of 23°C (73°F) and an average around 27°C (81°F), peaking at 34°C (93°F). The month boasts minimal precipitation, only 6 mm (0.2 in) across just a single day, and humidity levels average at 63%. In contrast, September sees a slight dip in temperatures, featuring a minimum of 18°C (64°F) and an average of 25°C (77°F), with a maximum of 31°C (88°F). However, it is wetter, receiving 32 mm (1.2 in) of rain over two days, and humidity slightly increases to 65%. For more detailed insights, check out Spetses weather in September.

August weather typically features warmer temperatures, with a minimum of 23°C (73°F) and averages reaching up to 27°C (81°F), peaking at a maximum of 34°C (93°F). Precipitation is quite low during this month, totaling just 6 mm (0.2 in) over only 1 day, along with a relatively comfortable humidity level of 63%. In contrast, October exhibits cooler temperatures, with a minimum of 16°C (60°F) and an average of 21°C (70°F), while the maximum temperature caps off at 27°C (81°F). The month sees increased precipitation at 28 mm (1.1 in) over 3 days, and humidity rises slightly to 72%. For a more detailed look at the climate during this time, check out Spetses weather in October.

August weather is characterized by warm temperatures, with a minimum of 23°C (73°F) and a maximum reaching up to 34°C (93°F), providing a balmy average of 27°C (81°F). Precipitation is minimal during this month, with only 6 mm (0.2 in) falling over just one day, and humidity levels sitting at 63%. In contrast, November experiences much cooler conditions, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 24°C (75°F), averaging 18°C (64°F). Rainfall significantly increases during this month, totaling 55 mm (2.1 in) spread across about eight days, while humidity also rises to 75%. For more detailed information on November weather, you can visit Spetses weather in November.

August and December present stark contrasts in weather patterns. In August, temperatures are warm, with an average of 27°C (81°F) and highs reaching up to 34°C (93°F). The month is relatively dry, receiving only 6 mm (0.2 in) of precipitation over just one day, and the humidity hovers around 63%. In contrast, December brings cooler temperatures, with an average of 14°C (58°F) and highs of only 20°C (68°F). This month is also wetter, experiencing 55 mm (2.2 in) of precipitation across nine days, with humidity levels rising to 76%. For a detailed look at the December climate, you can check Spetses weather in December.

Compare Spetses's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Spetses

August in Spetses presents a warm, inviting atmosphere, characterized by high temperatures and low precipitation, making it a standout month compared to the cooler and wetter months of the year. With average highs around 27°C and minimal rain—only about a day of showers—August beckons sun-seekers to enjoy its mild Mediterranean climate. The humidity level at 63% adds a slight stickiness, but it does little to detract from the enjoyment of sun-drenched days and balmy evenings. For more detailed insights into the weather patterns in this beautiful island, visit Spetses Climate.