Last updated: August 21, 2025
April in Kalymnos, Greece, offers a delightful transition into spring, characterized by an inviting mix of mild temperatures and refreshing breezes. The maximum daily temperature reaches a pleasant 21°C (70°F), while the average hovers around 16°C (61°F), ensuring comfortable outdoor experiences. Night temperatures dip to a cozy 10°C (50°F), ideal for evening strolls. Although April sees a modest precipitation amount of 30 mm (1.2 in) over just 4 rainy days, the humidity level remains moderately high at 77%. This combination of weather conditions makes Kalymnos a perfect destination for adventure seekers and sun-worshippers alike.
In April, Kalymnos, Greece experiences a noteworthy transition in temperatures, signifying the arrival of spring. With minimum temperatures rising to 10°C (50°F), the days become pleasantly mild as the average climbs to 16°C (61°F), peaking at a comfortable 21°C (70°F). This month marks a significant warming compared to the cooler early months of the year, where temperatures lingered in the single digits and low teens. As the island shakes off winter's chill, locals and visitors alike can enjoy the welcoming sunshine and ideal conditions for outdoor activities, making April a charming time to explore the stunning landscapes and clear waters of Kalymnos.
In April, Kalymnos, Greece experiences a notable drop in precipitation, with only 30 mm (1.2 in) of rain falling over just four days. This marks a significant decrease from the wetter months of winter, where January sees a high of 150 mm (5.9 in) across 13 rainy days. As spring unfolds, the island transitions towards a drier climate, with May and June contributing a mere 4 mm (0.1 in) each, hinting at the approaching dry summer months. Such trends illustrate Kalymnos's characteristic shift from the heavy rains of winter to the sun-drenched days of summer, making April a brief interlude in the island's evolving weather pattern.
In April, Kalymnos, Greece, experiences a consistent humidity level of 77%, mirroring the slightly cooler months of January through March. This stability provides a refreshing spring atmosphere, preparing the island for the gradual uptick in humidity during May, which jumps to 81% as summer approaches. Notably, April marks a pivotal point as humidity begins to decrease through the hotter months ahead, ultimately hitting a low of 66% in August. Overall, the trend highlights Kalymnos as a destination with a delicately balanced spring climate, making it an inviting choice for visitors seeking a comfortable getaway before the heat intensifies.
As April unfolds in Kalymnos, Greece, the UV Index escalates sharply to 8, marking a transition into the very high exposure category. This increase from March's 7 underscores a trend of intensifying sun exposure as spring progresses, with a significant reduction in burn time to just 15 minutes. It’s a reminder for outdoor enthusiasts to adopt sun safety precautions early in the season, as the level of UV radiation continues to rise. Following April, May and June reach their peak at a UV Index of 10, indicating a sustained period of intense sunlight. For more detailed information on UV protection during your visit, check out the Kalymnos UV Index.
UV Risk Categories
As the calendar turns to April in Kalymnos, Greece, residents and visitors alike bask in a remarkable 353 hours of sunshine, marking a delightful peak in springtime radiance. This month demonstrates a consistent upward trend from the previous winter months, with sunshine hours steadily increasing from January's modest 214 to an inspiring March total of 334. April continues to build upon this momentum, foreshadowing the sun-drenched days of May and June, where averages soar even higher, reaching over 400 hours. The trend underscores a vibrant transition into warmer seasons, inviting outdoor festivities and exploration of Kalymnos' stunning landscapes.
As April unfolds in Kalymnos, Greece, the likelihood of sunny weather presents a delightful mix of expectations. With a 55% chance of sunshine, this month marks a noticeable dip from the brighter days of March, which boasts a 68% probability. However, compared to the earlier winter months, April offers a promising transition to the sunnier spring and summer ahead. As the landscape awakens, travelers can look forward to experiencing the gentle warmth of the sun, paving the way for the more consistently sunny conditions that characterize May and June. Thus, while April may not guarantee clear skies at every turn, it's undoubtedly a step towards the relentless sunshine that the summer months will soon deliver.
As April arrives in Kalymnos, Greece, the days stretch delightfully, offering around 13 hours of daylight—a noticeable increase from the 11 hours experienced in March. This trend marks a significant shift towards longer, sunnier days as spring unfolds, paving the way for the vibrant energy of summer ahead. Following April, May reaches the pinnacle of daylight duration with approximately 14 hours, maintaining that sun-drenched ambiance through June and July. As the seasons transition into late summer and autumn, a gradual decline in daylight is observed, with September offering 12 hours, and further decreasing into the winter months of November and December. This natural rhythm of daylight underscores the enchanting allure of Kalymnos, inviting visitors to bask in its brilliant spring and summer glow.
In April, the winds in Kalymnos, Greece, remain invigorating, with an average speed of 8.4 m/s (19 mph). This consistent breeze mirrors the slightly increasing patterns observed in the preceding months of January through March, where wind speeds gently rose from 8.3 m/s to 8.5 m/s. Interestingly, after a peak in April, the winds begin to mellow in May, dropping to 6.2 m/s (14 mph), signaling the transition towards the calmer summer days. Overall, April serves as a pivotal point where the winds maintain their strength before the summer's gentle embrace fully settles in, making it an ideal time for outdoor enthusiasts to enjoy the vibrant Greek landscape.
Weather in Kalymnos varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in Kalymnos, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between April and January, April offers milder temperatures with a minimum of 10°C (50°F) and an average of 16°C (61°F), peaking at 21°C (70°F). In contrast, January sees cooler conditions, with a minimum of 5°C (42°F) and an average of 13°C (56°F), reaching a maximum of 19°C (66°F). While April experiences relatively low precipitation of 30 mm (1.2 in) over just 4 days, January is much wetter, with 150 mm (5.9 in) of rain spread over 13 days. Both months share a humidity level of 77%, but the overall experience is quite different, with January being considerably wetter and cooler. For more details on January weather, you can visit Kalymnos weather in January.
When comparing the weather in February and April, April typically offers milder temperatures with a minimum of 10°C (50°F), an average of 16°C (61°F), and a maximum of 21°C (70°F). In contrast, February has cooler temperatures, with a minimum of 5°C (41°F) and an average of 14°C (57°F), peaking at 19°C (66°F). Additionally, February experiences significantly more precipitation, totaling 97 mm (3.8 in) over 10 days compared to April's 30 mm (1.2 in) across just 4 days. Despite having slightly higher humidity in April at 77% versus 76% in February, the overall weather in April is generally more pleasant, making it preferable for outdoor activities. For more detailed insights about February weather, visit Kalymnos weather in February.
In comparing the weather between March and April, it is evident that April enjoys milder temperatures, with average highs reaching 21°C (70°F) compared to March's maximum of 18°C (65°F). The minimum temperatures also rise, with April starting at 10°C (50°F) versus March's 5°C (41°F). However, April experiences less precipitation, with only 30 mm (1.2 in) over four days, whereas March sees a significantly higher total of 75 mm (3.0 in) spread over seven days. Both months maintain the same humidity level of 77%, but the lighter precipitation and warmer temperatures in April make it the more pleasant of the two. For a detailed look at March weather, please visit Kalymnos weather in March.
In April, temperatures in Kalymnos range from a minimum of 10°C (50°F) to a maximum of 21°C (70°F), with an average of 16°C (61°F). The month experiences about 30 mm (1.2 in) of precipitation over 4 days, contributing to a humidity level of 77%. In contrast, May sees a notable increase in warmth, with minimum temperatures starting at 15°C (60°F) and reaching up to 24°C (75°F), averaging 19°C (67°F). Additionally, May is much drier, with only 4 mm (0.1 in) of precipitation and no rainy days, although humidity remains slightly higher at 81%. For more details, check out Kalymnos weather in May.
In comparing the weather between April and June, it is evident that June boasts warmer temperatures, with averages reaching 23°C (73°F) compared to April's 16°C (61°F). While April experiences a range from a minimum of 10°C (50°F) to a maximum of 21°C (70°F), June's temperatures vary from 16°C (61°F) to a higher 27°C (82°F). April sees more precipitation, totaling 30 mm (1.2 in) over four days, while June is much drier, with only 4 mm (0.1 in) falling over a single day. Both months maintain the same humidity level of 77%, but June's more stable climate is often more appealing for outdoor activities. For further details on the pleasant climate, you can check out Kalymnos weather in June.
In April, the weather is mild with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 21°C (70°F), accompanied by about 30 mm (1.2 in) of precipitation over four days. The humidity levels are relatively high at 77%, making the air feel a bit more damp. In contrast, July brings significantly warmer temperatures, with daily averages between 22°C (71°F) and 29°C (84°F), resulting in a much drier climate with no recorded precipitation and a lower humidity of 71%. For those looking to experience the warmest weather, July is clearly the better choice. To see more details about the conditions during this month, you can visit Kalymnos weather in July.
April and August present quite a contrast in weather patterns. In April, temperatures range from a minimum of 10°C (50°F) to a maximum of 21°C (70°F), with an average of 16°C (61°F). This month sees about 30 mm (1.2 in) of precipitation over four days, contributing to a relatively high humidity of 77%. In contrast, August boasts much warmer temperatures, with a minimum of 23°C (73°F), an average of 25°C (78°F), and a maximum of 29°C (85°F). Remarkably, August experiences no precipitation at all, leading to a drier atmosphere with humidity dropping to 66%. For more detailed information, check Kalymnos weather in August.
April and September present notably contrasting weather conditions. In April, temperatures range from a cooler minimum of 10°C (50°F) to a maximum of 21°C (70°F), with an average of 16°C (61°F). Additionally, this month sees about 30 mm (1.2 in) of precipitation over four days, contributing to a higher humidity level of 77%. In contrast, September enjoys warmer temperatures, with minimums around 19°C (66°F) and maximums reaching 28°C (83°F), averaging 24°C (75°F). Interestingly, September experiences significantly drier conditions, with just 4 mm (0.1 in) of precipitation over the month and no rainy days, accompanied by a slightly lower humidity of 70%. For a deeper dive into the weather specifics of September, you can check out Kalymnos weather in September.
In comparing the weather between April and October, we see noticeable differences in temperature and precipitation patterns. In April, temperatures range from a minimum of 10°C (50°F) to a maximum of 21°C (70°F), with an average of 16°C (61°F) and around 30 mm (1.2 in) of precipitation over four days, accompanied by a humidity level of 77%. On the other hand, October enjoys slightly warmer temperatures, with a minimum of 15°C (59°F) and a maximum of 25°C (77°F), averaging 21°C (70°F). The month sees a bit more rainfall, totaling 38 mm (1.5 in) over the same number of rainy days, while humidity remains slightly lower at 76%. For more information on the weather specifics in October, you can visit Kalymnos weather in October.
In comparing the weather of April and November, both months exhibit a similar level of humidity at 77%, contributing to a mild climate. April's temperatures range from a minimum of 10°C (50°F) to a maximum of 21°C (70°F), providing a pleasant spring atmosphere with relatively low precipitation at 30 mm (1.2 in) over just four days. On the other hand, November offers slightly warmer temperatures, with a minimum of 12°C (53°F) and a maximum of 23°C (74°F), but experiences significantly higher precipitation of 87 mm (3.4 in) spread across eight days. For more details about the weather conditions in November, you can visit Kalymnos weather in November.
April and December in Kalymnos present distinct weather patterns, with April generally experiencing milder temperatures. In April, the average temperature ranges from a minimum of 10°C (50°F) to a maximum of 21°C (70°F), accompanied by relatively low precipitation of just 30 mm (1.2 in) over four days, and a humidity level of 77%. In contrast, December sees slightly cooler average temperatures, ranging from a minimum of 9°C (48°F) to the same maximum of 21°C (69°F), but it is much wetter, with 179 mm (7.1 in) of rain spread over 15 days. Humidity is marginally higher in December at 78%. For more details, you can check Kalymnos weather in December.
As April unfolds on Kalymnos, visitors can expect a refreshing transition from the cooler months to the pleasant warmth of spring. With average temperatures hovering around a comfortable 16°C (61°F) and peaks reaching 21°C (70°F), the island begins to shake off winter's chill. While April experiences a modest amount of rainfall with only a few days of precipitation, the overall humidity remains relatively high at 77%, lending a fresh vibrancy to the island’s landscapes. Compared to the drier and hotter summer months, April offers a unique blend of mild conditions perfect for outdoor activities. For more insights into what to expect, check out the detailed Kalymnos Climate.