December Weather in Sepang, Indonesia

Last updated: August 21, 2025

Discover the December weather in Sepang, Indonesia, where the tropical climate brings warm temperatures and significant rainfall. Expect maximums reaching 33°C (92°F) and a comfortable average of 25°C (77°F), while the nights cool down to a minimum of 21°C (71°F). With an average humidity level of 76%, the air feels quite moist. This month is characterized by heavy precipitation, accumulating around 494 mm (19.4 in) over approximately 29 rainy days, making it a period of lush greenery and vibrant landscapes. Ideal for those who appreciate the beauty of tropical rain and warm weather!

December Temperature in Sepang

In December, Sepang, Indonesia experiences a warm climate that is characteristic of its tropical setting. With minimum temperatures hovering around 21°C (71°F) and highs reaching a balmy 33°C (92°F), the month maintains an average temperature of 25°C (77°F). This consistent warmth marks a trend seen throughout the year, particularly as December shares similarities with the preceding months of November and October, both of which also feature maximum temperatures in the low 30s. Overall, the weather remains inviting, making December a delightful time to enjoy the region's beautiful landscapes and vibrant culture.

December Weather in Sepang: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sepang, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sepang, December 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).
JanFebMarAprMayJunJulAugSepOctNovDec767576767674737475777776
Data source: Temperature data for Sepang generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Sepang

As December rolls in, Sepang, Indonesia experiences a significant uptick in precipitation, making it one of the wettest months of the year. With an average rainfall of 494 mm (19.4 in) over 29 days, the skies open up more frequently, reflecting a sharp contrast to the drier months of July and August, where rainfall dips to a mere 1.2 in and 1.8 in, respectively. This spike in December's rainfall also mirrors the patterns observed in January and November, both of which see over 400 mm of precipitation, hinting at a sustained wet season. As the year draws to a close, the lush landscapes of Sepang thrive under the nourishing rains, painting a vivid picture of tropical exuberance.

December Precipitation Trends in Sepang

The chart displays monthly precipitation patterns in Sepang, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Sepang, December typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec449463488331134103472963110444494
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Sepang

In Sepang, Indonesia, December experiences a notably mild humidity level at 76%, aligning closely with the drier trends seen from October through November. Following a peak in early months, where humidity levels consistently hover in the high 70s to low 80s, the latter part of the year witnesses a gradual decline. By December, the humidity reaches its annual low, creating a refreshing climate that contrasts sharply with the sultry surroundings experienced earlier. This shift indicates a seasonal transition, making December a pleasant time for outdoor activities in this tropical paradise.

December Average Humidity in Sepang

This chart illustrates the average monthly humidity levels in Sepang, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Sepang is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%83%82%80%81%79%77%77%77%76%77%76%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sepang

In December, the UV Index in Sepang, Indonesia remains notably high at 14, classifying it within the extreme exposure category, with a dangerous burn time of just 10 minutes. This trend of consistently high UV levels is evident throughout the year, with January to March hitting a peak of 15, indicating a significant risk for sunburn and skin damage. As the months progress, while the UV Index slightly varies from 12 in May to 10 in June, it quickly escalates back to extreme levels in the latter half of the year. Notably, September also sees a return to the 15 mark, maintaining the critical caution needed for outdoor activities. With such intense UV radiation persisting, residents and visitors alike should stay vigilant and informed. For more detailed insights, check the Sepang UV Index.

Maximum UV Index Levels in Sepang for December

The chart shows the monthly maximum UV Index (UVI) for Sepang in December, 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 December, the maximum UV index in Sepang typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151515141210111315151414
Data source: Sepang December 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.

December Sunshine in Sepang

As December unfolds in Sepang, Indonesia, the sunshine continues to grace the region, basking it in a warm glow with 283 hours of sunshine. This month marks a slight dip from the sun-soaked peak of 317 hours in October, yet it remains comfortably above the annual average. Notably, the late-year sunshine hours reflect a trend of consistently vibrant days, especially during the mid-year months of June through August, where daylight reached an impressive 312 hours. This gradual transition into the cooler December not only offers a perfect balance of warmth and light but also highlights Sepang's status as a prime destination for sun seekers throughout the year.

Monthly Sunshine Duration in Sepang: December Highlighted

The December sunshine duration represents the total number of hours Sepang experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec220h260h286h289h305h293h306h312h303h317h282h283h
Data source: Sepang December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sepang During December

In Sepang, Indonesia, the likelihood of enjoying sunny weather in December is relatively low, hovering around 8%. This trend reflects a larger pattern observed throughout the year, where the chance of sunny days gradually increases from the start of the year, hitting a peak in April at 36%. After that, however, the sunshine probability sees a decline, with November dipping to 4% and only a slight recovery in December. This suggests that while December might bring a few bright moments, it's primarily a month more associated with cloud cover than clear, sunny skies.

Percentage of Sunny Days in December in Sepang

The chart illustrates the percentage of sunny days in Sepang throughout the year, with December 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 Sepang experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec2%4%11%36%33%29%34%31%25%25%4%8%
Data source: Sepang December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sepang in December

In Sepang, Indonesia, the daylight duration exhibits a consistent and inviting pattern throughout the year, particularly in December when daylight extends to a pleasant 12 hours. This trend of roughly 12 hours of daylight remains steady from January to March, giving way to shorter days in the spring and summer months of April to August, when the duration dips to 11 hours. However, as the year transitions into September, the sunlight returns to 12 hours, continuing through October and November. This cyclical rhythm not only offers a sense of stability but also enhances the region's allure, making daylight a reliable companion in Sepang's tropical climate.

Average Daylight Hours in Sepang for December

The chart illustrates the variation in daylight duration in Sepang throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 31m12h 20m12h 7m11h 54m11h 43m11h 38m11h 41m11h 50m12h 2m12h 16m12h 28m12h 34m
Data source: Sepang daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Sepang

As December rolls into Sepang, Indonesia, the gentle whispers of the wind carry a soothing vibe, with an average speed of 1.4 m/s (3 mph). While the breezes are slightly stronger earlier in the year, particularly during the lively summer months of August and October, December brings a return to a more tranquil pace. Notably, July and August boast the highest wind speeds at 1.6 m/s (4 mph) and 1.8 m/s (4 mph) respectively, offering invigorating gusts perfect for outdoor activities. In contrast, the mid-year months like June experience the quietest winds, measuring just 1.1 m/s (2 mph). This shift in wind patterns emphasizes a seasonal rhythm, where cooler months gradually settle the atmosphere into a serene and inviting embrace, making December an ideal time for reflection and relaxation amid nature’s gentle, flowing currents.

Average December Wind Speed in Sepang

The chart displays monthly wind speed patterns in Sepang, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.51.71.21.31.31.11.61.81.71.81.21.4 m/s
Data source: Sepang December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Sepang Compares to Other Months

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

In December, the weather tends to be warmer, with maximum temperatures reaching up to 33°C (92°F) and an average of 25°C (77°F). The month is also characterized by high precipitation, totaling 494 mm (19.4 in) spread over 29 days, and humidity levels around 76%. Conversely, January sees slightly cooler temperatures, featuring a maximum of 31°C (88°F) and an average of 24°C (76°F). Precipitation decreases to 449 mm (17.7 in) over 25 days, though humidity rises to 79%. For more specific insights, check Sepang weather in January.

In comparison to December, February experiences slightly cooler temperatures, with an average of 24°C (76°F) compared to December's average of 25°C (77°F). Both months start with minimum temperatures around 21°C (70-71°F), but February features a lower maximum temperature of 30°C (87°F) compared to 33°C (92°F) in December. Precipitation remains significant in both months, with December recording 494 mm (19.4 in) and February 463 mm (18.2 in), although February has slightly fewer rainy days at 28 compared to December's 29 days. Moreover, humidity levels are higher in February at 83%, while December records 76%. For more details on February weather, you can visit Sepang weather in February.

In December, the weather is characterized by slightly higher average temperatures, with a minimum of 21°C (71°F), an average of 25°C (77°F), and a maximum reaching up to 33°C (92°F). The month brings significant rainfall, with a total precipitation of 494 mm (19.4 in) over 29 days and a humidity level of 76%. In contrast, March sees a marginally cooler average temperature, ranging from a minimum of 21°C (70°F) to a maximum of 31°C (87°F), with an average of 24°C (76°F). Precipitation is slightly lower at 488 mm (19.2 in) over 30 days, but humidity increases to 82%. For more detailed insights on March weather, you can visit Sepang weather in March.

In December, the weather is characterized by warmer temperatures, with a minimum of 21°C (71°F) and a maximum reaching up to 33°C (92°F). Precipitation is quite high during this month, averaging 494 mm (19.4 in) over 29 days, contributing to a humidity level of 76%. In contrast, April sees slightly cooler conditions, with temperatures varying from a minimum of 20°C (69°F) to a maximum of 30°C (87°F). Although April experiences less rainfall, with 331 mm (13.0 in) over 25 days, the humidity is slightly higher at 80%. For a more detailed look at April weather, check out Sepang weather in April.

December and May showcase distinct weather patterns. In December, temperatures range from a minimum of 21°C (71°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). This month also experiences significant rainfall, totaling 494 mm (19.4 in) across 29 days, contributing to a humidity level of 76%. In contrast, May presents slightly cooler temperatures, with a minimum of 19°C (67°F), an average of 24°C (76°F), and a maximum of 30°C (86°F). Precipitation in May is considerably lower at 134 mm (5.3 in) over 16 days, resulting in a higher humidity level of 81%. For a closer look at weather conditions during this month, visit Sepang weather in May.

December and June exhibit distinct weather patterns, reflecting the seasonal changes. In December, temperatures range from a minimum of 21°C (71°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). The month is characterized by high precipitation, totaling 494 mm (19.4 in) over 29 days, resulting in humidity levels around 76%. In contrast, June sees slightly cooler temperatures, with a minimum of 18°C (64°F), an average of 24°C (75°F), and a maximum of 29°C (85°F). Rainfall is significantly less in June, with only 103 mm (4.0 in) spread across 13 days and a marginally higher humidity level of 79%. For a more detailed look at the weather in June, you can check Sepang weather in June.

December and July present distinct weather patterns. In December, temperatures can range from a minimum of 21°C (71°F) to a maximum of 33°C (92°F), with an average of 25°C (77°F). This month is characterized by high precipitation, totaling 494 mm (19.4 in) over 29 days, contributing to a humid environment with 76% humidity. In contrast, July features milder temperatures, with a minimum of 17°C (64°F), an average of 23°C (73°F), and a maximum of 29°C (84°F). Additionally, July sees significantly less rain, with only 47 mm (1.8 in) over just 8 days, maintaining a similar humidity level of 77%. For more detailed weather insights, check out Sepang weather in July.

In December, the weather is characterized by warmer temperatures, with minimums around 21°C (71°F) and maximums reaching up to 33°C (92°F). The month is also quite wet, receiving a significant 494 mm (19.4 in) of rainfall over approximately 29 days, contributing to a humidity level of 76%. In contrast, August experiences cooler temperatures, with a minimum of 17°C (63°F) and a maximum of 30°C (86°F). Additionally, precipitation is minimal during this month, totaling just 29 mm (1.2 in) across 7 days, while humidity remains slightly elevated at 77%. For more details on the weather in August, check out Sepang weather in August.

In comparing the weather of December and September, December tends to be warmer overall, with an average temperature of 25°C (77°F) compared to September's 24°C (75°F). Additionally, the maximum temperatures in December reach up to 33°C (92°F), while September peaks at 31°C (88°F). However, December is significantly wetter, experiencing 494 mm (19.4 in) of precipitation over 29 days, unlike September, which has only 63 mm (2.5 in) over 8 days. Both months have high humidity levels, with December at 76% and September slightly higher at 77%. For more detailed insights on September's weather specifically, you can refer to Sepang weather in September.

December's weather is characterized by warmer temperatures, with a minimum of 21°C (71°F) and a maximum of 33°C (92°F), while October is slightly cooler, featuring a minimum of 19°C (67°F) and a maximum of 32°C (91°F). Both months have the same average temperature of 25°C (77°F), but December sees significantly higher precipitation at 494 mm (19.4 in) over 29 days compared to October's 110 mm (4.3 in) over just 12 days. Despite the similarities in humidity, which remains steady at 76%, the increased rainfall in December suggests a markedly wetter climate compared to October. For more details on October weather, visit Sepang weather in October.

In comparing the weather between November and December, both months experience similar temperature ranges, with minimums around 21°C (69°F to 71°F), average temperatures at 25°C (77°F), and maximums reaching 33°C (92°F). However, December sees a notable increase in precipitation, totaling 494 mm (19.4 in) over 29 days, compared to November's 443 mm (17.5 in) over 23 days. Interestingly, humidity levels remain consistent at 76% throughout both months. For a deeper dive into this month's weather, you can check Sepang weather in November.

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Conclusion: What to Expect From December Weather in Sepang

In December, Sepang experiences a unique weather profile compared to the rest of the year, characterized by warm temperatures and a high level of humidity. With average highs reaching 33°C and lows around 21°C, the month is a blend of warmth and moisture, which is further emphasized by the significant rainfall, totaling nearly 494 mm across an average of 29 days. This makes it the wettest month of the year, creating a lush and vibrant landscape. Travelers should prepare for the consistently humid conditions that accompany the precipitation, making it a truly tropical experience. For a deeper understanding of what to expect year-round, check out Sepang Climate.