Last updated: August 21, 2025
Batam, Indonesia experiences a warm and humid December, with average temperatures hovering around 27°C (81°F). Daily highs reach a maximum of 29°C (85°F), while the nights cool down to a minimum of 25°C (77°F). This month is characterized by substantial precipitation, totaling approximately 246 mm (9.7 in) over 24 rainy days, leading to a high humidity level of 87%. Visitors should be prepared for wet conditions, making it essential to plan indoor activities alongside enjoying the tropical warmth.
In December, Batam, Indonesia, continues to bask in tropical warmth, with temperatures showcasing a delightful consistency throughout the month. The minimum temperature hovers around 25°C (77°F), while the average settles at a comfortable 27°C (81°F), peaking at a pleasant 29°C (85°F) during the day. This month mirrors the patterns seen in preceding months—weather remains stable, marked by only slight fluctuations. As the year comes to a close, visitors can expect a perfectly temperate climate, ideal for exploring the island's stunning scenery or enjoying its vibrant culture. The warm, inviting atmosphere makes December a fantastic time to experience all that Batam has to offer.
December in Batam, Indonesia, marks the tail end of the monsoon season, delivering 246 mm (9.7 in) of precipitation over 24 days. This amount of rainfall places December among the wetter months, just after the exceptionally wet November, which recorded 352 mm (13.9 in). As the year concludes, the trend of increased rainfall continues, reflecting a peak in the monsoon's activity. Following a gradual rise from January's 200 mm, the precipitation levels show a steady climb through the latter half of the year, peaking in November before tapering off into January. The consistent rainfall creates a lush, vibrant landscape, inviting both adventure and tranquility in Batam during this time.
In Batam, Indonesia, December often ushers in a slight increase in humidity, reaching 87%, making it one of the more humid months of the year. This rise follows a gradual decline from the higher humidity levels observed at the beginning of the year, where January sees a peak of 88%. The trend shows that while humidity dips slightly during the warmer months—from May to July, where it stabilizes around 83%—it promptly rebounds in the latter part of the year. By December, the humidity subtly intensifies again as the region transitions into its wet season, reflecting the overall tropical climate that characterizes Batam throughout the year.
As December rolls into Batam, Indonesia, the UV Index settles at a notable 12, maintaining its classification in the extreme exposure category with a consistent burn time of just 10 minutes. This figure is part of an annual trend that showcases a region consistently facing high UV levels, particularly in the earlier months where indices peak at 16 in March. While there is a slight dip as the year concludes, with the index lowering from 14 in the preceding months to 12 in December, caution remains paramount for outdoor activities. For more detailed insights into Batam's UV trends throughout the year, check out Batam UV Index.
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As December unfolds in Batam, Indonesia, the island basks in a remarkable 304 hours of sunshine, marking a continuation of the region's impressive daylight legacy. This month follows a steady trajectory of sunny days that began with 244 hours in January, steadily climbing to a peak of 330 hours in March. Throughout the year, Batam enjoys consistently generous sunlight, particularly evident from June to August, where the hours hover around 299 to 321. Even as the year draws to a close, December maintains its brightness, showcasing the island's tropical allure and making it a perfect destination for sun-seekers looking to escape the winter chill.
In December, the likelihood of sunny weather in Batam, Indonesia, stands at 10%, marking it as one of the least sunny months of the year. This trend reflects a consistent decline in sunny days as the year winds down, paralleling the modest sunshine probabilities seen in November and October, which are at 10% and 14%, respectively. Notably, the sunniest months occur from April to September, where the chance of sun peaks, particularly in September at 26%. As the rainy season sets in, December is best known for its overcast skies, urging visitors to prepare for a mix of sun and clouds during their stay.
In Batam, Indonesia, December brings a consistent 12 hours of daylight, mirroring the lengths of daylight experienced throughout the entire year. This remarkable consistency highlights the region's equatorial climate, where the sun rises and sets with little variation month to month. As the year wraps up, residents and visitors alike can enjoy the same generous daylight that characterized January through November, creating ample opportunities for outdoor activities and exploration. Whether basking in the sunshine or engaging in cultural festivities, the unchanging daylight duration in Batam ensures a vibrant and lively atmosphere all year round.
As December settles in Batam, Indonesia, the winds begin to tell a story of transition. With an average wind speed of 5.2 m/s (12 mph), this month experiences a noticeable uptick compared to the sluggish breeze of November, which languished at 3.1 m/s (7 mph). The year begins with a promise, featuring the strongest winds in January and February, both reaching around 6.5 m/s (15 mph). However, as the seasons shift towards mid-year, there’s a gentle decline into the calmer months of April and May, where the winds barely whisper at 2.7 m/s (6 mph). As we approach the final stretch of the year, the wind speeds gradually rise again, reflecting a refreshing resurgence in December that invigorates the air. This cyclical pattern reminds us how the winds ebb and flow, intertwining with Batam’s unique climate throughout the year.
Weather in Batam varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Batam, focusing on differences in temperature, rainfall, humidity, and UV levels.
In December, the weather features slightly warmer temperatures with a minimum of 25°C (77°F) and an average of 27°C (81°F), peaking at 29°C (85°F). This month experiences significant rainfall, with 246 mm (9.7 in) of precipitation over 24 days, while humidity remains high at 87%. In contrast, January brings a minimal drop in temperature, with a minimum of 24°C (76°F) and the same average and maximum temperatures. However, precipitation decreases to 200 mm (7.9 in) over 18 days, and humidity slightly rises to 88%. Overall, while both months enjoy warm temperatures, January is characterized by less rainfall. For more details, you can check Batam weather in January.
In December, Batam experiences warm weather with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (85°F), averaging around 27°C (81°F). The month is characterized by high humidity at 87% and significant rainfall, totaling 246 mm (9.7 in) over 24 days. In contrast, February offers a similar temperature range, maintaining a minimum of 25°C (77°F) and a maximum of 29°C (84°F), with an average of 27°C (80°F). However, February sees a dramatic drop in precipitation, with only 74 mm (2.9 in) falling over 12 days and slightly lower humidity at 85%. For more detailed information, you can check Batam weather in February.
In comparing the weather between December and March, both months experience similar temperature ranges, with minimums around 25°C (77°F), average highs at 27°C (81°F), and maximums peaking at 29°C (85°F). However, December is notably wetter, receiving 246 mm (9.7 in) of precipitation over 24 days, while March sees a significant reduction in rainfall, with only 137 mm (5.4 in) across 17 days. Humidity levels are also quite close, standing at 87% in December and 86% in March, making both months feel equally warm and tropical. For more specific insights about March's weather, visit Batam weather in March.
In comparing December and April weather, both months maintain warm temperatures, with December averaging 27°C (81°F) and April slightly warmer at 28°C (82°F). The maximum temperatures peak at 29°C (85°F) in December and 30°C (86°F) in April, illustrating a minor increase as the year progresses. However, December experiences higher precipitation levels at 246 mm (9.7 in) across 24 days, compared to April's 222 mm (8.7 in) over 25 days. Humidity remains relatively high in both months, with December at 87% and April slightly lower at 84%. For more detailed insights, you can check Batam weather in April.
In December, the weather features slightly cooler temperatures, with an average of 27°C (81°F) and a maximum of 29°C (85°F), while May sees a slightly warmer average of 28°C (83°F) and peak at 30°C (86°F). Both months experience significant rainfall, with December receiving 246 mm (9.7 in) over 24 days, compared to May's 256 mm (10.1 in) spread across 28 days. Notably, December has higher humidity at 87%, while May's humidity is somewhat lower at 83%, creating a relatively more comfortable atmosphere. For those interested in more detailed insights, check out Batam weather in May.
In December, the weather features a minimum temperature of 25°C (77°F), with an average of 27°C (81°F) and a maximum of 29°C (85°F). The month experiences substantial rainfall, totaling 246 mm (9.7 in) over 24 days, accompanied by high humidity levels of 87%. In contrast, June sees slightly warmer temperatures, with a minimum of 25°C (77°F), an average of 28°C (82°F), and a maximum of 30°C (86°F). Precipitation in June is also higher at 262 mm (10.3 in), occurring over 26 days, but with slightly lower humidity at 83%. Overall, both months are characterized by warmth and high humidity, with June being marginally warmer and wetter. For more specific weather insights, check out Batam weather in June.
December and July both present warm temperatures, but there are notable differences in weather patterns. In December, the average temperature ranges from a minimum of 25°C (77°F) to a maximum of 29°C (85°F), with an average of 27°C (81°F). The month is characterized by higher humidity at 87% and significant precipitation, measuring 246 mm (9.7 in) over 24 days. In contrast, July offers slightly warmer conditions with a minimum temperature of 25°C (78°F) and a maximum of 30°C (86°F), averaging 28°C (82°F). Precipitation is less intense during July, totaling 210 mm (8.3 in) over 21 days, and humidity is slightly lower at 83%. For more details on July's weather, you can check Batam weather in July.
In December, the weather tends to be slightly cooler than in August, with average temperatures ranging from a minimum of 25°C (77°F) to a maximum of 29°C (85°F). However, December also sees a higher level of precipitation, averaging 246 mm (9.7 in) over 24 days, compared to 181 mm (7.1 in) over 22 days in August. Humidity remains high in both months, with December recording 87% and August slightly lower at 85%. This means that while both months experience warm temperatures, December is characterized by more frequent rain and slightly higher humidity. For more details, check out the Batam weather in August.
In comparing the weather in December and September, we see some notable similarities and differences. Both months feature a consistent temperature range, with minimums of 25°C (77°F), average temperatures around 27°C (81°F in December and 82°F in September), and maximums peaking at 29°C (85°F). However, December experiences a significantly higher precipitation level at 246 mm (9.7 in) over 24 days, compared to September's 186 mm (7.3 in) over 22 days. Additionally, December's humidity is slightly higher at 87%, in contrast to September's 84%. These factors suggest that while the temperatures remain relatively stable, December is generally wetter and more humid than September. For more details, visit Batam weather in September.
In comparing December and October's weather, both months exhibit warm temperatures, with December having a minimum of 25°C (77°F), an average of 27°C (81°F), and a maximum of 29°C (85°F). October, on the other hand, has a slightly higher maximum temperature of 30°C (86°F) while maintaining the same minimum and average temperatures as December.
When it comes to precipitation, December experiences more rainfall, totaling 246 mm (9.7 in) over 24 days compared to October's 212 mm (8.4 in) spread over 25 days. Humidity is also slightly higher in December at 87%, versus October's 84%. Overall, while both months are warm and humid, December is wetter and more humid than October. For a detailed look at October's weather, you can visit Batam weather in October.
The weather in December shows a slight decrease in precipitation compared to November, with 246 mm (9.7 in) of rain over 24 days, down from November's 352 mm (13.9 in) over 27 days. Both months maintain similar temperature averages, with minimums, maximums, and averages all hovering around 25°C to 29°C (77°F to 85°F). Humidity is marginally higher in December at 87%, compared to November's 84%. For more detailed information, you can check Batam weather in November.
December in Batam brings a distinct shift in weather, characterized by higher humidity and significant rainfall compared to other months. With temperatures maintaining a comfortable range, the island experiences nearly every day adorned with rain, leading to lush scenery but also necessitating planning for outdoor activities. The average precipitation during this month is notably elevated, making it one of the wettest periods of the year. Despite the showers, the warmth remains inviting, ensuring that visitors can still enjoy Batam’s natural beauty. For a deeper understanding of the climate throughout the year, be sure to explore Batam Climate.