Last updated: August 21, 2025
May in Semarang, Indonesia, is characterized by warm temperatures and high humidity levels, making it a vibrant yet slightly challenging month for outdoor activities. The maximum temperature typically reaches around 34°C (94°F), while the average settles at a comfortable 28°C (83°F). Nights offer a reprieve with minimum temperatures dropping to 23°C (73°F). However, precipitation is frequent, with 86 mm (3.4 in) of rain falling over 16 days, contributing to an overall humidity of 81%. This combination of warmth and moisture creates a lush atmosphere, ideal for enjoying Semarang's rich cultural heritage and stunning landscapes, albeit with a few rain showers along the way.
In May, Semarang experiences a warm and inviting climate, with temperatures ranging from a comfortable 23°C (73°F) at night to a lively 34°C (94°F) during the day. The average temperature of 28°C (83°F) marks the peak of the pre-dry season warmth, creating an ideal environment for outdoor activities and exploration. As temperatures begin to slightly rise from the previous months, May showcases a notable balance between heat and humidity, making it a delightful time for visitors to immerse themselves in the vibrant culture and lush landscapes of this bustling Indonesian city. With each passing month, Semarang's connection to tropical warmth becomes more pronounced, as seen in the upward trend towards summer in the coming months.
In May, Semarang experiences a noticeable shift in its climate, as precipitation drops sharply to 86 mm (3.4 in), marking a significant decline from the heavier rains of the preceding months. Compared to April’s 227 mm (9.0 in), this reduction highlights May's transition towards the drier part of the year, with rain falling on 16 days, noticeably fewer than in the earlier months. This trend continues into June, where rainfall diminishes further to just 78 mm (3.1 in), alongside a decrease in rainy days. Overall, May serves as a turning point, signaling the onset of a more moderate climate in Semarang as it approaches the dry season.
In May, Semarang experiences a humidity level of 81%, maintaining a consistent trend seen in the months before. Following the slightly lower humidity of 80% in April, May’s figures indicate that the region continues to bask in high moisture levels typical of the wet season. January and February stand out with their peak humidity readings of 82% and 86%, respectively, while a gradual decline is evident as the year progresses. After May, humidity levels mirror this trend, stabilizing at 81% in June, then declining further into the drier months of July and August. Observing this pattern highlights Semarang's tropical climate, characterized by significant humidity fluctuations throughout the year.
As May arrives in Semarang, Indonesia, the UV Index remains notably high with a value of 12, categorized as extreme. This indicates that sun exposure can lead to skin burns in just 10 minutes, making it crucial for individuals to take protective measures. Following a trend from earlier months, May's UV levels show a slight decrease from the peak in February and March, which reached a UV Index of 15. However, it’s just a small dip, as April also maintained a high rating of 13. The months surrounding May, including June, bring a gradual decline, transitioning to very high levels with a UV Index of 10. This pattern highlights the importance of being vigilant about sun safety during these intense UV periods. For more information on Semarang's UV levels throughout the year, visit Semarang UV Index.
UV Risk Categories
May shines brightly in Semarang, Indonesia, with an impressive 307 hours of sunlight. This month marks a peak in sunshine hours as the city transitions from the wetter months of early spring. After a consistent rise from February's 260 hours, May's welcoming rays are a delightful precursor to the sunny days of July and August, which both boast 317 hours. The trend suggests that as the year progresses into the dry season, Semarang enjoys a robust increase in sunshine hours, peaking in mid-year before gradually tapering off into the end of the year. Such vibrant sunlit days highlight the region's appeal and underscore the lingering warmth of May, inviting both locals and travelers to bask in the glow of its beautiful weather.
As we transition into May, Semarang, Indonesia starts to embrace a noticeable increase in sunshine, boasting a 38% chance of clear skies—up significantly from 30% in April. This upward trend highlights May as a pivotal moment in the shift towards sunnier months, particularly in comparison to the earlier parts of the year, where the likelihood of sun remains notably low, with just 1% in January and peaking at 9% in March. Following May, the sunny disposition cools off slightly in June, with a 33% chance of sunshine. However, the warm embrace of the sun continues to linger, particularly in the summer months of July and August, making May a promising precursor to the sunny season ahead.
In Semarang, Indonesia, the daylight duration displays a fascinating rhythm throughout the year. From January to March, residents enjoy a consistent 12 hours of daylight, allowing ample time for outdoor activities and exploration. As April arrives, this duration slightly reduces to 11 hours, a trend that continues into May, June, July, and August, hinting at a seasonal shift. However, the balance returns in September with another leap back to 12 hours, maintaining this ideal daylight length through October, November, and December. This rhythmic cycle showcases Semarang’s stable climate, welcoming both the gradual ebb of daylight in the middle months and the return to longer days as the year winds down.
In May, Semarang experiences one of its calmer winds of the year, with an average speed of 1.4 m/s (3 mph). This gentle breeze is part of a trend seen in the months leading up to this time, particularly from March to April, where wind speeds remain relatively low. While May's wind falls slightly below April's and June's steady levels, it is important to note that the transition into mid-year generally brings a subtle increase in wind speeds, reaching up to 2.0 m/s (5 mph) in August. The overall pattern suggests that the winds in Semarang tend to fluctuate, with May serving as a tranquil midpoint before the invigorating gusts of late summer begin to roll in.
Weather in Semarang varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Semarang, focusing on differences in temperature, rainfall, humidity, and UV levels.
In comparing the weather between May and January, both months feature warm temperatures, but January tends to be slightly cooler overall. In May, the temperatures range from a minimum of 23°C (73°F) to an average of 28°C (83°F), peaking at 34°C (94°F). In contrast, January's temperatures are slightly lower, with a minimum of 22°C (73°F), an average of 27°C (80°F), and a maximum of 32°C (90°F). However, January experiences significantly higher precipitation, averaging 370 mm (14.6 in) across 24 days, compared to May's 86 mm (3.4 in) over 16 days. Despite the similar humidity levels in both months, January is notably wetter, making it a much rainier period. For more details, you can check out Semarang weather in January.
May and February share similar temperature ranges, with both months experiencing minimum temperatures around 23°C (73°F) and maximum temperatures peaking at 34°C (94°F) in May and 34°C (93°F) in February. However, February is notably wetter, with a substantial 395 mm (15.6 in) of precipitation over 28 days, compared to May's 86 mm (3.4 in) across 16 days. Additionally, February has slightly higher humidity at 86%, compared to May's 81%. For a more detailed look at February weather, you can check out Semarang weather in February.
In comparing the weather of May and March, it's clear that while both months experience similar minimum temperatures around 23°C (73°F), May tends to be warmer overall, with average temperatures reaching 28°C (83°F) compared to March's 27°C (81°F). May also has slightly higher maximum temperatures, peaking at 34°C (94°F) versus March's 33°C (92°F). However, March sees significantly more precipitation, totaling 365 mm (14.4 in) across 30 days, unlike May's 86 mm (3.4 in) over just 16 days. Both months show high humidity levels, but March is slightly more humid at 84% compared to May's 81%. For further details, you can explore Semarang weather in March.
In comparing the weather of April and May, it’s clear that both months are warm, with average temperatures only slightly differing—April sees a minimum of 22°C (73°F) and an average of 27°C (82°F), while May has a minimum of 23°C (73°F) and averages around 28°C (83°F). The maximum temperatures are quite similar too, reaching up to 34°C (93°F) in April and 34°C (94°F) in May. However, May experiences significantly less precipitation than April, with 86 mm (3.4 in) over 16 days compared to April’s 227 mm (9.0 in) across 26 days, suggesting a drier trend as the months progress. The humidity levels are comparable, with May at 81% and April slightly lower at 80%. For more detailed insights, you can refer to Semarang weather in April.
In comparing the weather between May and June, both months exhibit warm temperatures with June slightly edging May in terms of maximum heat, reaching 35°C (95°F) compared to May's 34°C (94°F). However, both months maintain a similar average temperature of around 28°C (82°F). Notably, June experiences slightly less precipitation at 78 mm (3.1 in) over 11 days, compared to May’s 86 mm (3.4 in) over 16 days, indicating that June may be a bit drier. The humidity levels remain constant at 81% for both months, contributing to the overall tropical climate. For more detailed information on June weather, you can explore Semarang weather in June.
In May, the weather tends to be warmer and wetter, with temperatures ranging from a minimum of 23°C (73°F) to a maximum of 34°C (94°F) and an average of 28°C (83°F). The month also sees significant rainfall, with 86 mm (3.4 in) of precipitation spread over 16 days, and a high humidity level of 81%. In contrast, July experiences slightly cooler temperatures, with a minimum of 20°C (68°F), an average of 28°C (82°F), and a maximum of 35°C (95°F). Rainfall is much less in July, totaling only 23 mm (0.9 in) over just 3 days, accompanied by a slightly lower humidity of 78%. For more detailed weather information, check out Semarang weather in July.
In May, the weather is characterized by slightly higher humidity at 81% and more frequent precipitation, with 86 mm falling over 16 days. The temperatures in May range from a minimum of 23°C (73°F) to a maximum of 34°C (94°F), creating warm and humid conditions. In contrast, August experiences relatively lower humidity at 74% and significantly less precipitation, totaling only 13 mm over just 2 days. The temperatures remain similar in August, with a range between 20°C (68°F) and 35°C (96°F), but the overall weather is drier and more comfortable. For more details, check Semarang weather in August.
In comparing the weather between May and September, we see some distinct differences. May tends to be slightly warmer, with average temperatures around 28°C (83°F) and maximum highs reaching up to 34°C (94°F), while September also averages 28°C but can peak at a hotter 36°C (97°F). However, May is marked by higher humidity at 81% and significantly more rainfall, with 86 mm (3.4 in) spread over 16 days, compared to September's much drier conditions, which see only 40 mm (1.6 in) of precipitation over just 6 days. For more details on September's weather, you can check out Semarang weather in September.
May and October in this region exhibit similar minimum temperatures, around 23°C (73°F), but October tends to be warmer on average and can reach higher maximums of 38°C (100°F). While May experiences slightly less precipitation at 86 mm (3.4 in) over 16 days, October sees an increase to 120 mm (4.7 in) despite having only 14 rainy days. Additionally, the humidity is higher in May at 81% compared to 72% in October, making the latter month feel a bit more comfortable. For a detailed look at October weather, you can check Semarang weather in October.
May and November present distinct weather characteristics, despite having similar average temperatures. In May, temperatures range from a mild 23°C (73°F) to a high of 34°C (94°F) with a relatively moderate precipitation of 86 mm (3.4 in) spread over 16 days of rainfall and a humidity level of 81%. In contrast, November sees a higher maximum temperature reaching up to 37°C (99°F) while maintaining the same minimum and average temperatures. However, it experiences significantly greater rainfall, totaling 294 mm (11.6 in) over 25 days, and a lower humidity level of 73%. These differences underscore the transition from May's relatively drier conditions to November's wetter climate. For more specific insights about November weather, you can visit Semarang weather in November.
In comparing the weather between May and December, both months exhibit warm temperatures, but December tends to be slightly cooler on average, with a minimum of 23°C (74°F) and an average of 27°C (81°F), compared to May’s average of 28°C (83°F). December also experiences higher maximum temperatures, peaking at 35°C (95°F). However, precipitation is significantly more pronounced in December, with 375 mm (14.8 in) falling over 29 days, while May sees only 86 mm (3.4 in) over 16 days. Additionally, humidity levels are slightly lower in December at 75%, compared to the higher 81% in May. For more detailed insights, you can explore Semarang weather in December.
As May unfolds in Semarang, the temperatures begin to rise, with delightful warmth enveloping the city, featuring notably higher averages compared to earlier months. The humidity level remains high, contributing to a tropical ambiance that may feel more intense. However, May also ushers in increased rainfall, with precipitation days spiking and totaling a significant amount that can transform the landscape. As the transition towards the wetter season continues, residents and visitors alike should prepare for both the heat and the refreshing showers. For a more detailed understanding of what to expect throughout the year, check out Semarang Climate.