Last updated: August 21, 2025
Fira, Greece in December offers a mild winter climate, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 20°C (68°F). The average temperature hovers around 15°C (60°F), making it a comfortable escape from harsher winter conditions elsewhere. Visitors can expect a significant amount of rainfall, totaling approximately 72 mm (2.8 in) over about 12 days of the month, contributing to the island's lush landscapes. The humidity level is relatively high at 78%, which adds a touch of Mediterranean warmth despite the cooler temperatures. Overall, December in Fira combines inviting weather with beautiful scenery, perfect for those looking to explore the magic of Santorini during the off-peak season.
In December, Fira, Greece experiences a gentle transition into winter, with temperatures reflecting the island’s mild climate. The minimum temperature hovers around 10°C (50°F), while the average settles at a comfortable 15°C (60°F), peaking at a pleasant 20°C (68°F) during the warmer parts of the day. This month marks a slight drop from the warmer autumn temperatures, but it remains significantly milder compared to many other European destinations. As daylight hours decrease, visitors can still enjoy the vibrant charm of Fira, with cool evenings ideal for cozy strolls through the picturesque streets and stunning sunset views over the caldera.
In December, Fira, Greece experiences a notable uptick in precipitation, with an average of 72 mm (2.8 in) falling over 12 days. This marks a substantial increase compared to the drier months of summer, where rainfall is minimal. The late autumn months show a gradual rise in precipitation, culminating in December, which serves as a transitional period into the wetter winter season. With 72 mm of rain, December is a key month for replenishing the island’s resources, highlighting a significant shift from the near-drought conditions of July and August. Overall, the pattern reflects the evolution of Fira's climate, where rain begins to play a crucial role as the year draws to a close.
In December, Fira experiences a humidity level of 78%, which reflects a slight increase from the preceding months. This month illustrates a trend evident throughout the year, with early winter maintaining relatively high humidity akin to autumn levels, hovering around 77%. Interestingly, December marks a transition as the humidity begins to rise slightly from November's average of 77%, setting the stage for the wetter winter months ahead. Notably, relative humidity tends to peak in late spring with 81% in May, before dipping to its lowest in August at 66%. Overall, the consistent humidity levels indicate Fira's temperate climate, making it a delightful destination even in the heart of winter.
In December, Fira, Greece experiences a moderate UV Index of 3, offering a welcome respite from the intense sun of the earlier months. The burn time is approximately 30 minutes, indicating that while sun exposure should still be approached with caution, the risk of overexposure is lower compared to the scorching summer months. This trend of decreasing UV levels is evident as the year progresses, with the index peaking at 10 during the height of summer before gradually descending back to moderate levels by winter. For travelers looking to enjoy the sun while ensuring their safety, December is a great time to soak in Fira's beauty without the harsh UV rays. For more details, check out the Fira UV Index.
UV Risk Categories
December in Fira, Greece, offers a gentle transition towards winter, with 267 hours of sunshine that still evoke the warmth of the Mediterranean. As the year draws to a close, daylight hours gradually decrease from the summer peak of 424 hours in July, highlighting a natural ebb as the seasons shift. This month sees less sun compared to the vibrant months of May and June, when the island basks in over 400 hours of golden rays. However, December's sunny days remain inviting, captivating visitors with mild weather and stunning views, making it an ideal time to explore Fira’s picturesque charm before the new year begins. The trend suggests a steady decrease in sunlight from the summer's height, culminating in the serene beauty of a winter escape in this enchanting Greek island.
In December, Fira, Greece, enjoys a 51% chance of sunny weather, making it a pleasantly moderate time of year. As the calendar transitions from the vibrant summer months, where the sun graces the skies almost completely from July to September, the likelihood of clear skies begins to dip in November before slightly rebounding in December. While December’s potential for sun is modest compared to the summer’s peak, it still offers a promising blend of mild temperatures and occasional bright days, ideal for exploring this beautiful island without the summer crowds.
In Fira, Greece, December marks the end of the year with daylight reaching 9 hours, mirroring the low days of January. As the months progress into spring, daylight gradually increases, peaking at 14 hours in May through July. Following the summer solstice, the days begin to shorten again, with August seeing a slight decline to 13 hours, and continuing to taper off until the winter months. This cycle highlights the dramatic seasonal variations, showcasing not only the joys of long summer days but also the cozy charm of winter evenings. Whether basking in the summer sun or enjoying the serene atmosphere of winter, Fira's daylight duration enriches the experience of this stunning island year-round.
As December settles over Fira, Greece, the winds pick up, averaging a brisk 8.0 m/s (18 mph). This slight increase in wind speed echoes a trend seen throughout the year, where the winter months, particularly December, often deliver some of the stronger gusts. While spring typically sees a surge in speed with March reaching 8.4 m/s (19 mph), the winter months maintain a competitive edge, embracing the chill in the air. Interestingly, the gentle breezes of May and June, averaging around 5.7 m/s (13 mph) and 5.4 m/s (12 mph) respectively, offer a stark contrast to the invigorating winds of December. This refreshing air not only enhances the festive atmosphere but also invites visitors to indulge in the breathtaking views of Fira’s stunning caldera, framed against the backdrop of the Aegean Sea.
Weather in Fira varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Fira, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit fairly similar weather patterns, although January tends to be a bit cooler. In December, temperatures range from a minimum of 10°C (50°F) to a maximum of 20°C (68°F), with an average of 15°C (60°F). The month experiences 72 mm of precipitation over 12 days, alongside a relatively high humidity of 78%. In contrast, January features a lower minimum temperature of 5°C (40°F) and a slight drop in the average to 13°C (56°F), while the maximum remains the same at 20°C (68°F). With precipitation slightly increased to 76 mm over 11 days and humidity at 77%, January provides a comparable, though cooler, transition into the new year. For more detailed information, you can check Fira weather in January.
In December, the weather features a mild temperature range, with minimums around 10°C (50°F) and maximums hitting 20°C (68°F), while February sees slightly cooler temperatures, with minimums of 7°C (44°F) and maximums of 19°C (66°F). Precipitation levels are also noteworthy; December experiences more rainfall, totaling 72 mm (2.8 in) over 12 days, compared to February's 58 mm (2.3 in) spread across just 8 days. Humidity remains relatively high in both months, with December at 78% and February at 76%. For more detailed information about February's weather, you can check Fira weather in February.
December and March exhibit notable differences in weather patterns. December tends to be slightly warmer, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 20°C (68°F), while March sees a smaller temperature range, with a minimum of 6°C (44°F) and a maximum of 18°C (65°F). Precipitation is more prevalent in December, with 72 mm (2.8 in) falling over 12 days, compared to March's 44 mm (1.7 in) spread across just 6 days. Both months feature high humidity levels, but December is slightly more humid at 78% compared to March's 77%. For more specific insights into March weather in Fira, you can check out this link: Fira weather in March.
December and April offer contrasting weather experiences, though their temperatures show only a slight difference. In December, the minimum temperature averages around 10°C (50°F) and can reach a maximum of 20°C (68°F), with an average of 15°C (60°F). This month also brings considerable rainfall, totaling 72 mm (2.8 in) over about 12 days, and a relatively high humidity level of 78%. In contrast, April sees a slightly milder minimum temperature of 11°C (51°F) and maintains a maximum of 20°C (69°F), with an average of 16°C (61°F). Precipitation drops significantly to just 17 mm (0.7 in) over only 2 days, along with a slightly lower humidity of 77%. For more detailed insights, check Fira weather in April.
In December, the weather tends to be cooler, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 20°C (68°F) and an average of 15°C (60°F). This month also experiences more precipitation, with 72 mm (2.8 in) falling over approximately 12 days, and humidity levels at 78%. In contrast, May brings warmer temperatures, with a minimum of 15°C (60°F) and a maximum of 24°C (75°F), averaging around 19°C (67°F). Notably, May is much drier, with only 4 mm (0.2 in) of precipitation and no rainy days, coupled with a slightly higher humidity of 81%. For more detailed information about weather during this pleasant spring month, check out Fira weather in May.
December and June present stark contrasts in weather conditions. In December, temperatures range from a minimum of 10°C (50°F) to a maximum of 20°C (68°F), while the average temperature hovers around 15°C (60°F). This month is characterized by relatively high humidity at 78% and frequent precipitation, with about 72 mm (2.8 in) falling over 12 rainy days. In contrast, June boasts a more pleasant climate with higher temperatures, starting from 18°C (65°F) and peaking at 27°C (80°F), averaging 23°C (73°F). The humidity remains similar at 77%, but June experiences minimal rainfall, recording only 3 mm (0.1 in) over the entire month. For a closer look at the delightful June weather, you can visit Fira weather in June.
The weather in December is noticeably cooler and wetter compared to July. With temperatures ranging from a minimum of 10°C (50°F) to a maximum of 20°C (68°F), December averages around 15°C (60°F) and experiences about 72 mm (2.8 in) of precipitation over 12 days, resulting in a humidity level of 78%. In contrast, July boasts much warmer temperatures, with a minimum of 22°C (72°F) and a maximum of 28°C (83°F), averaging 25°C (77°F), and remarkably, it sees no precipitation at all, maintaining a lower humidity level of 71%. This stark difference highlights the seasonal variation in climate, making July a much drier and sunnier month. For more specific details, check Fira weather in July.
December and August present distinctly different weather patterns. In December, temperatures range from a mild 10°C (50°F) at night to a comfortable average of 15°C (60°F) during the day, peaking at 20°C (68°F). The month sees significant rainfall, with 72 mm (2.8 in) spread over approximately 12 days, accompanied by a higher humidity level of 78%. In contrast, August boasts much warmer temperatures, with nighttime lows of 22°C (73°F) and daytime averages reaching 25°C (77°F), culminating at a high of 30°C (86°F). Moreover, August enjoys virtually no precipitation, with just 1 mm (0.0 in) and no rainy days, along with a lower humidity of 66%. For more detailed insights about the weather in August, you can visit Fira weather in August.
December and September present quite contrasting weather conditions. In December, temperatures range from a minimum of 10°C (50°F) to a maximum of 20°C (68°F), with an average of 15°C (60°F), accompanied by higher humidity levels at 78%. This month also experiences significant precipitation, with rain falling on about 12 days totaling 72 mm (2.8 in). In contrast, September boasts much warmer temperatures, with a minimum of 20°C (68°F) and a maximum of 27°C (82°F), averaging around 24°C (75°F). Notably, September is remarkably dry, with only 2 mm (0.1 in) of rain and no recorded precipitation days. The humidity in September is slightly lower at 70%. For more details about September weather, you can check Fira weather in September.
In December, the weather is cooler with an average temperature of 15°C (60°F), compared to the warmer October, which averages 21°C (70°F). While October enjoys more sunshine and only 14 mm (0.5 in) of precipitation over just two days, December sees significantly higher rainfall, totaling 72 mm (2.8 in) across 12 days. Additionally, December features a slight increase in humidity at 78%, compared to October's 76%. For those interested in October's weather specifics, you can check out Fira weather in October.
In comparing the weather between November and December, December experiences slightly cooler temperatures, with a minimum of 10°C (50°F) compared to November's minimum of 13°C (55°F). The average temperature in December is 15°C (60°F), which is lower than November's average of 18°C (65°F). Additionally, December sees increased precipitation, totaling 72 mm (2.8 in) over 12 days, while November has less rain, with 41 mm (1.6 in) over just 5 days. Humidity levels remain quite similar, with December at 78% and November at 77%. For a detailed overview of the weather conditions in November, you can check Fira weather in November.
As December graces Fira, the island transforms into a cooler and wetter paradise compared to the sun-kissed summer months. With temperatures gently dipping and precipitation on the rise, it's a time when the vibrant landscape is refreshed by nature's embrace. While the warmth of summer gives way to a milder climate, the increased humidity and occasional rainfall create a unique atmosphere that enhances Fira's charm. Visitors can enjoy the tranquility of fewer crowds amidst the picturesque backdrop of this stunning island. For a deeper dive into what to expect year-round, explore the full details at Fira Climate.