Last updated: March 19, 2025
December in Kelaniya, Sri Lanka, offers a vibrant atmosphere characterized by warm temperatures and tropical humidity. With a maximum temperature peaking at 34°C (94°F) and an average of 27°C (80°F), the weather is ideal for those who enjoy a sultry climate. Night temperatures dip to a comfortable 20°C (69°F), providing a pleasant reprieve. However, this month also brings 170 mm (6.7 in) of rainfall over 16 days, making it a period of lush greenery and revitalized landscapes. Humidity levels hover around 80%, creating a rich and immersive environment that captures the essence of Sri Lanka’s tropical charm.
In Kelaniya, Sri Lanka, December marks a transition into milder temperatures, featuring a minimum of 20°C (69°F), an average of 27°C (80°F), and a maximum reaching 34°C (94°F). As the year comes to a close, the climate remains warm, echoing the trend of consistent temperatures throughout the year. While the maximums decrease slightly from the heat of earlier months, December still offers plenty of warmth for outdoor activities. This month serves as a reminder of Sri Lanka's tropical allure, inviting visitors to enjoy the pleasant weather before the cooler months set in. The steady averages indicate a comfortable environment, perfect for exploring the rich culture and vibrant landscapes that Kelaniya has to offer.
In December, Kelaniya, Sri Lanka experiences a notable shift in precipitation patterns, with an average of 170 mm (6.7 in) of rainfall spread over 16 days. This marks a decrease from the heavy downpours of October and November, where the region receives 377 mm (14.9 in) and 358 mm (14.1 in), respectively. December transitions to a more manageable rainy season, characterized by shorter bursts of precipitation that provide a reprieve from the torrential rains of the preceding months. As the year draws to an end, the climate's shift signals a gentle closing to the monsoon period, indicating a balance between the wet and dry spells that define Kelaniya's unique tropical weather.
As December arrives in Kelaniya, Sri Lanka, humidity levels stabilize at 80%, reflecting a trend consistent with the preceding months. The latter part of the year, particularly June through November, sees consistently high humidity, peaking at 83% in August. This pattern indicates a notable increase from the drier early months of the year, where humidity dipped to 73% in February. By the time December rolls in, the air feels thicker as the humidity balances out, preparing the landscape for the onset of the wetter season. Overall, this trend captures the essence of Kelaniya's tropical climate, where moisture remains a defining characteristic throughout the year.
In Kelaniya, Sri Lanka, December marks a slight shift in UV Index levels, where it registers at 10—a decrease from the previous months, which consistently hovered between 11 and 15. This places December in the very high exposure category, with a recommended burn time of 15 minutes. While the intensity remains notable, the reduction in the UV Index suggests a minor easing in the potential for sunburn compared to the extreme levels experienced in earlier months. As we transition from the intense peak of March (UV Index 15) to the milder December readings, it's crucial to continue prioritizing skin protection while enjoying the sunny beauty of the season. For a detailed overview of UV trends, check out Kelaniya UV Index.
UV Risk Categories
December in Kelaniya, Sri Lanka, ushers in a delightful blend of warmth and sunshine, boasting an impressive 307 hours of sunlight. As the year draws to a close, the sun continues to shine brightly, contributing to a remarkable resilience in daylight hours. Notably, March and April take the lead with a peak of 331 hours, showcasing the region's prowess for sunshine during the mid-year months. Following suit, the summer months of February and July also offer abundant sunlight, while November and October see a gentle decline, echoing the transition towards the cooler season. Overall, December's generous sunlight invites both locals and visitors to bask in the warmth, making it a perfect time for outdoor festivities and explorations in this vibrant locale.
In Kelaniya, Sri Lanka, the chances of enjoying sunny weather in December are quite promising, with a notable 53% probability of sunshine. This trend marks a significant increase compared to the preceding months, particularly following the low points from June to November, where sunshine chances barely brushed against the 18% mark. As the year winds down, December's bright outlook is a refreshing contrast, paving the way for festive outdoor activities and enjoyable moments under the sun. This seasonal shift underscores the unique climate patterns of the region, making December a delightful time for both locals and visitors to bask in the warmth.
In Kelaniya, Sri Lanka, the daylight duration presents an interesting pattern throughout the year. The months of January and February start off with a consistent 11 hours of daylight, a rhythm that remains unchanged through the end of the year. As the days warm, March through August witnesses an uplifting shift to 12 hours of daylight, reflecting the peak of the tropical sun. However, as we transition into September, daylight settles back into the familiar 11 hours, echoing the earlier months. This cyclical trend illustrates how Kelaniya experiences a balance between light and dark, with a noticeable midpoint of prolonged brightness during the mid-year months, inviting both nature lovers and tourists to bask in the abundant sunshine.
In December, the winds in Kelaniya, Sri Lanka maintain a gentle pace, with an average wind speed of 2.2 m/s (5 mph). This slight decrease from the breezier months of July and June, which peak at 3.5 m/s and 3.1 m/s respectively, suggests a transition as the year winds down. Following a trend observed throughout the year, while the winds often oscillate around 2 to 3 m/s, December’s mildness contributes to the tranquil atmosphere, perfect for enjoying the lush surroundings. As the wind settles, it invites a serene close to the year, reflecting the calming essence of the tropical landscape.
The weather in Kelaniya changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Kelaniya and find detailed weather information for every month.
In December, the weather is characterized by warmer temperatures with a minimum of 20°C (69°F) and a maximum reaching 34°C (94°F), coupled with significant precipitation of 170 mm (6.7 in) over 16 days, resulting in a humidity level of 80%. In contrast, January sees slightly cooler nights with a minimum of 19°C (66°F) and a higher maximum of 36°C (96°F). The month also experiences much less rain, with only 68 mm (2.7 in) of precipitation over just 6 days, and a slightly lower humidity at 77%. For a more detailed look at the January weather in Kelaniya, you can visit Kelaniya weather in January.
In December, the weather tends to be quite humid, with temperatures ranging from a mild 20°C (69°F) to a maximum of 34°C (94°F) and an average of 27°C (80°F). This month also experiences significant rainfall, totaling 170 mm (6.7 in) over 16 days. In contrast, February offers slightly warmer temperatures, with an average of 28°C (83°F) and a maximum reaching as high as 37°C (99°F). However, February sees much less precipitation, accumulating only 61 mm (2.4 in) over just 8 days, and the humidity drops to 73%. For more detailed information, you can check out Kelaniya weather in February.
In December, the weather is characterized by slightly cooler temperatures, with a minimum of 20°C (69°F) and an average of 27°C (80°F), peaking at a maximum of 34°C (94°F). This month also experiences significant rainfall, with 170 mm (6.7 in) over about 16 days, combined with a high humidity level of 80%. In contrast, March sees warmer temperatures, with a minimum of 22°C (73°F), averaging 29°C (84°F), and reaching a scorching maximum of 37°C (99°F). Although March has lower overall precipitation at 122 mm (4.8 in) spread across 17 days, the humidity is slightly lower at 74%. For a detailed look at what to expect, check out Kelaniya weather in March.
December and April present contrasting weather patterns. In December, temperatures range from a minimum of 20°C (69°F) to a maximum of 34°C (94°F), with an average of 27°C (80°F). The month experiences significant rainfall, with 170 mm (6.7 in) of precipitation across 16 days and high humidity levels at 80%. In contrast, April boasts slightly warmer temperatures, with a minimum of 23°C (74°F) and a maximum of 37°C (98°F), averaging 28°C (83°F). However, it receives less rainfall at 144 mm (5.7 in) over 25 days, and the humidity is lower at 74%. For a closer look at the weather during April, check out this link: Kelaniya weather in April.
In December, temperatures range from a minimum of 20°C (69°F) to a maximum of 34°C (94°F), with an average of 27°C (80°F). The month experiences significant rainfall, totaling about 170 mm (6.7 in) across 16 days, contributing to a high humidity level of 80%. In contrast, May sees slightly warmer conditions with a minimum temperature of 24°C (75°F) and an average of 28°C (83°F), while still reaching up to 34°C (93°F). However, May is notably wetter, with precipitation of 284 mm (11.2 in) over 29 days, and a relatively lower humidity of 76%. For a more detailed overview of the weather in May, you can visit Kelaniya weather in May.
In December, the weather is characterized by slightly cooler temperatures, with a minimum of 20°C (69°F) and an average of 27°C (80°F), peaking at 34°C (94°F). The month sees significant rainfall, totaling 170 mm (6.7 in) over 16 days, coupled with high humidity levels at 80%. In contrast, June features warmer conditions with minimum temperatures of 24°C (76°F) and an average of 28°C (82°F), while the maximum reaches 32°C (90°F). Rainfall in June is notably heavier, with 270 mm (10.6 in) spread across 29 days, and humidity remains high at 82%. For more details, see Kelaniya weather in June.
In December, temperatures range from a minimum of 20°C (69°F) to a maximum of 34°C (94°F), presenting an average daily temperature of 27°C (80°F). The month sees considerable rainfall, totaling 170 mm (6.7 in) over 16 days, accompanied by high humidity levels of around 80%.
In contrast, July experiences slightly warmer nights with a minimum temperature of 23°C (74°F) and an average of 27°C (82°F). However, it is wetter, receiving 205 mm (8.1 in) of precipitation spread over 30 days, alongside a similar humidity of 82%. This increased frequency of rain contributes to the overall dampness of the atmosphere during this month. For more specific insights on weather conditions, you can refer to Kelaniya weather in July.
In December, temperatures range from a comfortable minimum of 20°C (69°F) to a maximum of 34°C (94°F), with an average of 27°C (80°F). The month sees significant rainfall, with a total of 170 mm (6.7 in) spread over 16 days and humidity levels around 80%. In contrast, August features slightly warmer conditions, with minimum temperatures starting at 24°C (75°F) and a maximum of 31°C (88°F), maintaining an average of 27°C (81°F). However, it experiences more rainfall, totaling 250 mm (9.8 in) across 29 days, coupled with a slightly higher humidity level of 83%. For a detailed look at the weather patterns, check out Kelaniya weather in August.
When comparing the weather in December and September, December tends to feature slightly cooler temperatures, with averages around 27°C (80°F) compared to September's average of 27°C (81°F). However, September sees higher minimum temperatures and maximum temperatures, with a low of 23°C (73°F) and a high of 32°C (90°F), compared to December's minimum of 20°C (69°F) and maximum of 34°C (94°F).
Precipitation levels are notably different as well; December experiences 170 mm (6.7 in) of rain over about 16 days, while September is significantly wetter, with 245 mm (9.6 in) over 27 days. Humidity remains relatively similar, with December at 80% and September at 82%. For more detailed information, you can check Kelaniya weather in September.
When comparing the weather in December and October, both months exhibit warm temperatures, but with distinct differences in precipitation and humidity. December experiences slightly warmer minimum temperatures, averaging 20°C (69°F) and reaching a maximum of 34°C (94°F), while October starts with a higher minimum of 23°C (73°F) but peaks at 32°C (89°F). Notably, December has significantly lower precipitation at 170 mm (6.7 in) over 16 days compared to October's 377 mm (14.9 in) over 30 days. Humidity levels remain comparable, with December at 80% and October at 81%. For a closer look at October weather specifics, visit Kelaniya weather in October.
In comparing the weather of December and November, both months exhibit warm temperatures, with December ranging from a minimum of 20°C (69°F) to a maximum of 34°C (94°F) and November slightly warmer, with a minimum of 22°C (72°F) and a maximum of 32°C (90°F). Despite the average temperature remaining consistent at 27°C (80°F) for both months, December experiences significantly less precipitation, totaling 170 mm (6.7 in) over 16 days, compared to November’s 358 mm (14.1 in) across 26 days. Humidity remains steady at 80% for both months, contributing to a warm and humid atmosphere. For more detailed information, you can visit Kelaniya weather in November.
December in Kelaniya presents a unique transition, marked by a pleasant average temperature that hangs around a comfortable 27°C (80°F), drastically contrasting with the intense highs of preceding months. While residents enjoy the warmth, the humidity levels soar at 80%, creating a balmy atmosphere that's typical for this time of year. However, December also ushers in the monsoon season, with about 16 days of precipitation bringing a total of 170 mm (6.7 in). This increased rainfall not only nourishes the lush greenery but also adds a refreshing twist to the warm days. For those looking to understand the broader climatic shifts throughout the year, explore more at Kelaniya Climate.