Last updated: August 21, 2025
January in Sepang, Indonesia offers a tropical climate characterized by warm temperatures and significant rainfall. With maximum highs reaching 31°C (88°F) and comfortable lows around 20°C (69°F), the average temperature settles at a pleasant 24°C (76°F). However, this month also brings considerable precipitation, totaling 449 mm (17.7 in) over approximately 25 days, contributing to the humidity level of 79%. Visitors should be prepared for both the warmth and the frequent showers that define the weather landscape during this time.
In January, Sepang, Indonesia experiences tropical warmth with temperatures that range from a comfortable 20°C (69°F) at night to a balmy 31°C (88°F) during the day, creating the perfect conditions for outdoor activities. The consistent average of 24°C (76°F) highlights a stable and inviting climate that lingers into February and March, where temperatures remain almost unchanged, peaking at a slightly lower 30°C (87°F). As the months progress, a gradual decline in maximum temperatures is observed, particularly in the cooler months of July and August, where daytime highs dip to around 29°C (84°F). However, the warmth returns in October and November, with peaks rising again to 32°C (91°F) and even 33°C (92°F) by late in the year. Overall, Sepang offers a consistent warm climate, ideal for those seeking sunshine year-round.
January in Sepang, Indonesia, sets the tone for a wet and tropical start to the year, with precipitation totaling a remarkable 449 mm (17.7 in) across an average of 25 rainy days. This substantial rainfall marks a continuation of the region's distinctive rainy season pattern, where monthly precipitation peaks towards the beginning of the year. Following January, precipitation tends to escalate slightly in February and March, reaching a maximum of 488 mm (19.2 in) in March, before gradually tapering off in the drier months of May and June. As the dry season sets in, rainfall declines sharply, with July and August experiencing merely 47 mm (1.8 in) and 29 mm (1.2 in) respectively. Notably, November and December once again herald the return of significant rainfall, illustrating a distinct seasonal rhythm that defines Sepang’s climate. The data reveals an undulating flow of precipitation, painting a vivid picture of a lush, vibrant environment shaped by its monsoonal weather patterns.
In January, the humidity in Sepang, Indonesia, averages a significant 79%, setting the tone for a month that often feels dynamically humid. As the year progresses into February, humidity increases slightly to 83%, marking the peak of the wet season. By March, humidity remains high at 82%, before gradually declining through April and May, where it hovers around 80% and 81% respectively. The trend continues into the summer months, where humidity stabilizes at lower levels, dropping to the consistent 77% from July through September, before further declining to 76% in the latter part of the year. This progression reveals a notable fluctuation between the dampness of the earlier months and the drier conditions experienced later on, painting a vivid picture of Sepang's tropical climate.
In January, Sepang, Indonesia, experiences an intense UV Index of 15, categorizing the exposure as extreme with a burn time of just 10 minutes. This high level of UV radiation persists through the following months, as February and March maintain the same dangerously elevated index. Even as the year progresses into April, the UV Index dips slightly to 14 but remains in the extreme category. The trend of extreme UV exposure continues unabated into May, July, September, and October, with each month recording an index of 15. Notably, even in June, while the UV Index decreases to 10, it still falls within the very high exposure category, giving sun-seekers a burn time of only 15 minutes. To stay safe in such harsh sun conditions, it’s essential for visitors to the area to stay informed and take necessary precautions. For detailed insights and updates, check the Sepang UV Index.
UV Risk Categories
In January, the sun shines brightly over Sepang, delivering a solid 220 hours of sunlight to kick off the year. As the months progress, the sun's presence intensifies, with February experiencing an increase to 260 hours. This upward trend continues steadily into March and April, reaching 286 and 289 hours, respectively. By May, the days become longer with a robust 305 hours, setting the stage for a radiant July, where sunshine peaks at 306 hours. The warmth persists into August with an impressive 312 hours of sunshine, before settling at a still generous 303 hours in September. The months then experience a slight tapering, with October shining the brightest at 317 hours, followed by a gentle decrease in November and December, rounding out the year at 282 and 283 hours. This pattern showcases a vibrant summer peak, capturing the essence of Sepang's tropical allure.
In Sepang, Indonesia, January welcomes the year with a notably low likelihood of sunny weather, boasting only a 2% chance of sunshine. This trend reflects a pattern of increasing sun exposure as the months progress; February sees a slight uptick to 4%, while March experiences a substantial rise to 11%. April and May show a significant shift, with the probability climbing to 36% and 33%, respectively, marking the transition into a season where sunshine becomes more frequent. As the year advances, the chance of sunny days stabilizes, hovering around the 29-34% range during the peak months from June through August. However, as the year winds down, the likelihood dips again, with November and December returning to lower figures of 4% and 8%. Overall, January is certainly one of the dimmest months for sun, hinting at a gradual yet encouraging trend towards brighter skies as the season unfolds.
In Sepang, Indonesia, January sees a consistent 12 hours of daylight, a trend that continues through February and March, creating an inviting atmosphere perfect for outdoor activities. As the year progresses into April, the daylight slightly decreases to 11 hours, a change that persists through the mid-year months of May to August. However, as September rolls back around, daylight returns to 12 hours, maintaining this length through October, November, and December. This rhythmic pattern highlights the tropical climate's relatively stable daylight duration throughout the year, providing residents and visitors with ample sunshine for exploration and enjoyment.
In January, the gentle breezes of Sepang, Indonesia, bring an average wind speed of 1.5 m/s (3 mph), setting a tranquil tone for the start of the year. This calmness is characteristic of early the year, with only modest increases in wind speed observed in the following months. As February arrives, the winds pick up slightly to 1.7 m/s (4 mph), hinting at a gradual shift toward livelier conditions. The trend continues through the summer months, with August and October experiencing the strongest gusts at 1.8 m/s (4 mph). However, as the year progresses into November and December, the winds soften once more, returning to their milder pace. Overall, January in Sepang reflects a transitional period, where the winds remain gentle but hint at the energetic months that lie ahead.
Weather in Sepang varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Sepang, focusing on differences in temperature, rainfall, humidity, and UV levels.
In January, the weather features a minimum temperature of 20°C (69°F) and an average of 24°C (76°F), with maximum highs reaching 31°C (88°F). This month experiences significant rainfall, totaling 449 mm (17.7 in) over 25 days, along with a humidity level of 79%. In contrast, February sees a slight increase in minimum temperature to 21°C (70°F), while the average remains the same at 24°C (76°F) and maximum temperatures drop slightly to 30°C (87°F). Rainfall does increase to 463 mm (18.2 in), spanning 28 days, and the humidity rises to 83%. For more details on February weather conditions, you can visit Sepang weather in February.
January and March exhibit similar temperature ranges, with both months experiencing average highs around 31°C (87-88°F) and lows of 20-21°C (69-70°F). However, March tends to be slightly wetter, with a total precipitation of 488 mm (19.2 in) over 30 days compared to January's 449 mm (17.7 in) across 25 days. Additionally, humidity levels rise modestly in March to 82%, compared to 79% in January, contributing to a more humid environment. For more detailed insights, you can check Sepang weather in March.
In comparing the weather between January and April, both months experience warm temperatures, though April tends to be slightly warmer, with an average of 25°C compared to January's 24°C. While the minimum temperature remains consistent at 20°C for both months, January showcases slightly higher maximum temperatures, reaching up to 31°C, whereas April peaks at 30°C. Precipitation levels are noticeably different; January receives 449 mm over 25 days, while April has less rain at 331 mm, also spread across 25 days. Humidity levels are quite similar in both months, hovering around 79% in January and 80% in April. For more detailed insights, you can refer to Sepang weather in April.
January and May both feature similar average temperatures, with January having a slightly higher maximum temperature of 31°C (88°F) compared to May's 30°C (86°F). However, January is considerably wetter, receiving 449 mm (17.7 in) of precipitation over 25 days, while May sees just 134 mm (5.3 in) across 16 days. Additionally, humidity levels are quite close, with January at 79% and May slightly higher at 81%. For more details, you can check Sepang weather in May.
January and June present distinct weather characteristics, despite having similar average temperatures. In January, the climate is warmer with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 31°C (88°F), accompanied by significant rainfall of 449 mm (17.7 in) over 25 days. This month experiences high humidity at 79%, creating a noticeably wetter atmosphere. In contrast, June sees a slight decrease in temperatures, with a minimum of 18°C (64°F) and a maximum of 29°C (85°F). The rainfall is considerably lower at 103 mm (4.0 in) over just 13 days, while the humidity remains constant at 79%. For more specific details on June weather, you can visit Sepang weather in June.
In January, temperatures range from a minimum of 20°C (69°F) to a maximum of 31°C (88°F), with an average of 24°C (76°F). This month also experiences significant rainfall, with 449 mm (17.7 in) of precipitation over approximately 25 days and high humidity at 79%. In contrast, July sees cooler temperatures, with a minimum of 17°C (64°F) and a maximum of 29°C (84°F), averaging at 23°C (73°F). Rainfall drops significantly in July to just 47 mm (1.8 in) over 8 days, accompanied by a slightly lower humidity of 77%. For more details, check out Sepang weather in July.
In January, the weather is characterized by warm temperatures, with daily averages around 24°C (76°F) and maximums reaching up to 31°C (88°F). This month experiences significant rainfall, totaling 449 mm (17.7 in) over 25 days, contributing to a high humidity level of 79%. In contrast, August offers slightly cooler temperatures, with an average of 23°C (74°F) and maximums around 30°C (86°F). Precipitation dramatically decreases to only 29 mm (1.2 in) over just 7 days, resulting in a marginally lower humidity of 77%. For more details on the specific conditions, you can check Sepang weather in August.
In January, the weather is characterized by higher humidity and significantly more rainfall, with temperatures ranging from a minimum of 20°C (69°F) to a maximum of 31°C (88°F). The month experiences about 449 mm (17.7 in) of precipitation over 25 days, making it a rather wet season. In contrast, September offers slightly cooler temperatures, with a minimum of 18°C (64°F) and the same maximum of 31°C (88°F), but with much lower precipitation at 63 mm (2.5 in) over only 8 days. The humidity is slightly reduced in September at 77%, providing a more comfortable atmosphere. For a detailed look at the weather specifics during this month, you can visit Sepang weather in September.
January and October exhibit distinct weather patterns. In January, temperatures range from a minimum of 20°C (69°F) to a maximum of 31°C (88°F), with an average of 24°C (76°F). The month also tends to be quite wet, with a substantial 449 mm (17.7 in) of precipitation spread over 25 days and a humidity level of 79%. In contrast, October features slightly warmer temperatures, with a minimum of 19°C (67°F), an average of 25°C (77°F), and a maximum of 32°C (91°F). Precipitation is significantly lower in October at 110 mm (4.3 in) over just 12 days, and humidity hovers around 76%. For a more detailed look at October weather, check out Sepang weather in October.
In comparing the weather between January and November, both months showcase warm tropical conditions. January's temperatures range from a minimum of 20°C (69°F) to a maximum of 31°C (88°F), with an average of 24°C (76°F). Precipitation is substantial, totaling 449 mm (17.7 in) over 25 days, contributing to a humidity level of 79%. In contrast, November tends to be slightly warmer, with temperatures from 21°C (69°F) to 33°C (92°F), averaging at 25°C (77°F). The month sees slightly less rainfall, at 443 mm (17.5 in) over 23 days, and a lower humidity level of 76%. For those interested in the specifics of weather during this period, additional details can be found at Sepang weather in November.
In comparing the weather between January and December, January tends to be slightly cooler, with average temperatures ranging from a minimum of 20°C (69°F) to a maximum of 31°C (88°F). In contrast, December sees a bit warmer overall, with average temperatures between 21°C (71°F) and 33°C (92°F). December also experiences slightly more precipitation, totaling 494 mm (19.4 in) over 29 rainy days, compared to January's 449 mm (17.7 in) spread over 25 days. Humidity levels are relatively similar, with January at 79% and December at 76%. For more detailed information on precipitation patterns, check out Sepang weather in December.
As January settles over Sepang, it brings with it warm temperatures and a distinctive wetness that sets it apart from other months. With an average temperature hovering around a comfortable 24°C (76°F), the days reach up to a sizzling 31°C (88°F), while the nights offer a mild 20°C (69°F) reprieve. However, this comfortable warmth comes with a significant increase in rainfall, averaging a hefty 449 mm (17.7 in) over 25 days of precipitation, which is notably higher than other months. The humidity also lingers at around 79%, contributing to a tropical ambiance that bathes the region in lush greenery. For more insights on how the climate in Janurary prepares you for your trip, check out Sepang Climate.