October Weather in Surabaya, Indonesia

Last updated: August 21, 2025

October in Surabaya, Indonesia offers a warm tropical climate that captivates visitors with its vibrant weather. Temperatures range from a maximum of 33°C (91°F) to a comfortable average of 24°C (75°F), while the minimum dips to a mild 18°C (65°F) during the cooler nights. However, travelers should be prepared for occasional rain, as the city experiences 132 mm (5.2 in) of precipitation spread over 19 days throughout the month. With a humidity level of 74%, October presents a lush and vibrant atmosphere, perfect for enjoying Surabaya's rich cultural tapestry amidst the tropical greenery.

October Temperature in Surabaya

In October, Surabaya experiences a pleasant transition with temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (91°F), showcasing a slight uptick in warmth as the month progresses. With an average temperature of 24°C (75°F), October marks one of the warmer periods of the year, hinting at the approaching wet season. Notably, this month stands out with its highest maximum temperature so far, indicating a trend of rising warmth compared to the preceding months, which hover around 30°C (86°F). As the humidity begins to increase, October is a vibrant time to explore the city’s rich culture and diverse attractions under the sun-drenched skies of Surabaya.

October Weather in Surabaya: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Surabaya, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Surabaya, October 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).
JanFebMarAprMayJunJulAugSepOctNovDec747374757575737374757574
Data source: Temperature data for Surabaya 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.

October Precipitation in Surabaya

In October, Surabaya experiences a notable uptick in precipitation, receiving 132 mm (5.2 in) of rainfall over 19 days. This marks a significant increase compared to the dry months of June and July, when the city saw minimal rain, with just 59 mm (2.3 in) and 28 mm (1.1 in) respectively. The trend of rising precipitation continues from September, which had only 49 mm (1.9 in), hinting at the approach of the wet season. As the month progresses, locals can expect a refreshing shift from the dry spell, underlining October’s role as a transitional period in the region’s climatic rhythm.

October Precipitation Trends in Surabaya

The chart displays monthly precipitation patterns in Surabaya, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Surabaya, October typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec46148550233216359282649132377464
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

October Humidity in Surabaya

In October, Surabaya experiences a notable shift in humidity, dropping to 74% as the region transitions into the end of the dry season. This month marks a continuation of the downward trend observed since the peak levels of 87% in February, signaling a gradual easing from the sultry heat of the earlier months. After a summer of consistently high humidity, October offers a slight reprieve, fostering a more comfortable atmosphere that paves the way for the return of increased moisture in November. Overall, this dip is part of a yearly cycle, where humidity tends to decline before rebounding as the rainy season approaches, making October an ideal time for those seeking milder weather in Surabaya.

October Average Humidity in Surabaya

This chart illustrates the average monthly humidity levels in Surabaya, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Surabaya is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%87%85%82%81%81%79%76%72%74%78%78%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Surabaya

In October, Surabaya, Indonesia, experiences a UV Index of 15, maintaining its status in the extreme exposure category with a consistent burn time of just 10 minutes. This month mirrors the intensity seen earlier in the year, particularly notable in January and February, when the UV levels peaked at 14 and 16, respectively. As the year progresses, the UV Index fluctuates slightly, with a steady trend of high readings throughout the dry season, urging residents and visitors alike to embrace sun safety. For those planning outdoor activities during this time, it’s essential to stay informed about UV levels and protect your skin. For a comprehensive overview of UV levels, visit Surabaya UV Index.

Maximum UV Index Levels in Surabaya for October

The chart shows the monthly maximum UV Index (UVI) for Surabaya in October, 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 October, the maximum UV index in Surabaya typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141615141311111314151514
Data source: Surabaya October 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.

October Sunshine in Surabaya

Surabaya basks in abundant sunshine throughout the year, but October shines particularly bright with an impressive 310 hours of sunlight. Following a summer peak in July and August, which featured over 300 hours of glorious sunshine, October maintains this vibrant energy before the days gradually shorten as the year comes to a close. Interestingly, after a slight dip in November to 279 hours, the city's sunshine still lingers, showcasing the resilience of Surabaya's tropical charm. With its warm and inviting rays, October not only highlights the beauty of Surabaya's landscapes but also invites residents and visitors alike to revel in the natural splendor before the year's end.

Monthly Sunshine Duration in Surabaya: October Highlighted

The October sunshine duration represents the total number of hours Surabaya experiences direct sunlight during the month of October, excluding cloudy or obstructed periods. This chart compares the sunshine duration of October with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec214h237h292h290h310h299h319h322h310h310h279h272h
Data source: Surabaya October Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Surabaya During October

In Surabaya, Indonesia, the likelihood of sunny weather sees a notable shift as the months progress. While January kicks off the year with a mere 1% chance of sunshine, this figure gradually climbs through the months, peaking in July at an impressive 39%. However, as October rolls in, the chances dip to 15%, indicating a transition from the sunnier days of mid-year back towards the cloudier and wetter conditions typical of the later months. This trend highlights a distinctive seasonal pattern, where early to mid-year offers more opportunities for sun, setting October apart as a month of uncertainty in weather forecasting.

Percentage of Sunny Days in October in Surabaya

The chart illustrates the percentage of sunny days in Surabaya throughout the year, with October 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 Surabaya experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec1%3%6%31%28%25%39%33%25%15%4%5%
Data source: Surabaya October chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Surabaya in October

In October, Surabaya, Indonesia enjoys a generous 12 hours of daylight, mirroring the consistent illumination seen in most months of the year. The city basks in this vibrant glow from January through March, where daylight remains a constant 12 hours, showcasing a tropical paradise where the sun generously shares its time. As the calendar flips to April through August, daylight dips to 11 hours, hinting at a slight seasonal variation. However, the trend quickly pivots back, as October returns to the full 12-hour length, followed by November and December, ensuring that Indonesia's bustling city continues to thrive under the warm embrace of sunlight. This pattern illustrates the predictability of daylight in Surabaya, making it an ideal destination for sun-seekers year-round.

Average Daylight Hours in Surabaya for October

The chart illustrates the variation in daylight duration in Surabaya throughout the year, with October highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec12h 28m12h 18m12h 7m11h 55m11h 46m11h 42m11h 44m11h 52m12h 3m12h 14m12h 25m12h 30m
Data source: Surabaya daylight hours, calculated by summing the hours between sunrise and sunset for each day.

October Winds in Surabaya

As October unfolds in Surabaya, Indonesia, the city experiences an average wind speed of 1.3 m/s (3 mph), maintaining a steady breeze consistent with the previous months of August and September. This slight uptick from the quieter winds of June and November, which see averages around 0.9 m/s (2 mph), suggests a transitional phase as the region prepares for the changing seasons. The winds, while not particularly strong, create a gentle atmosphere, often inviting locals and visitors alike to enjoy outdoor activities. October's calming breezes, alongside the onset of the rainy season later in the year, reflect a rhythmic pattern in Surabaya's climate, where seasonal shifts are marked by these subtle yet impactful changes in wind velocity.

Average October Wind Speed in Surabaya

The chart displays monthly wind speed patterns in Surabaya, with values for each month shown alongside October's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how October's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.01.30.91.11.10.91.31.61.61.3 m/s0.90.9
Data source: Surabaya October wind data, generated using information from the Copernicus Climate Change Service.

How October Weather in Surabaya Compares to Other Months

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

When comparing the weather in October and January, we see some notable differences. In October, temperatures range from a minimum of 18°C (65°F) to a maximum of 33°C (91°F), with an average temperature of 24°C (75°F). This month experiences 132 mm (5.2 in) of precipitation over 19 days and a humidity level of 74%. In contrast, January has slightly warmer temperatures, with a minimum of 19°C (67°F) and a maximum of 30°C (86°F), resulting in an average of 23°C (74°F). However, January is significantly wetter, with 461 mm (18.2 in) of precipitation spread across 25 days and increased humidity at 84%. For more details on January weather, you can check out Surabaya weather in January.

In comparing the weather between October and February, October tends to be slightly warmer, with average temperatures ranging from 24°C (75°F) to a maximum of 33°C (91°F). In contrast, February's temperatures are a notch cooler, with averages around 23°C (74°F) and a maximum of 30°C (86°F). However, February sees a significant increase in rainfall, accumulating a staggering 485 mm (19.1 in) over 28 days, compared to October's 132 mm (5.2 in) over 19 days. The humidity levels are also higher in February at 87%, compared to October's 74%. For more detailed insights, check Surabaya weather in February.

When comparing the weather in October and March, we see notable differences in temperature and precipitation. In October, the temperatures range from a minimum of 18°C (65°F) to a maximum of 33°C (91°F), with an average of 24°C (75°F). The month experiences 132 mm (5.2 in) of rainfall spread over 19 days, resulting in a humidity level of 74%. In contrast, March has slightly warmer temperatures, with a minimum of 19°C (66°F) and a maximum of 30°C (86°F), averaging 23°C (74°F). However, it is significantly wetter, receiving 502 mm (19.8 in) of rain across 30 days, leading to increased humidity of 85%. For more insights, check out Surabaya weather in March.

When comparing the weather between October and April, we can see both similarities and differences. Both months have an average temperature of around 24°C (75°F), but October generally experiences higher maximum temperatures, peaking at 33°C (91°F), compared to April's 30°C (87°F). In terms of precipitation, April is significantly wetter, receiving 332 mm (13.1 in) over 27 days, while October has only 132 mm (5.2 in) across 19 days. Additionally, April has a higher humidity level at 82%, compared to October's 74%. For more specific details on April weather, you can check Surabaya weather in April.

October and May in Surabaya display quite similar temperature patterns, with both months featuring a minimum of 18°C (65°F) and an average of 24°C (75°F). However, October tends to be slightly warmer overall, reaching a maximum of 33°C (91°F) compared to May's peak of 30°C (87°F). In terms of precipitation, May is wetter with 163 mm (6.4 in) over 18 rainy days, while October receives 132 mm (5.2 in) across 19 days, indicating more frequent, albeit lighter, showers in October. Additionally, the humidity levels are higher in May at 81%, compared to 74% in October. For more detailed information, you can check Surabaya weather in May.

In comparing the weather conditions of October and June, both months exhibit similar average temperatures of around 24°C (75°F), but October experiences slightly higher extremes, with a maximum of 33°C (91°F) compared to June's 31°C (88°F). October also sees significantly more precipitation, totaling 132 mm (5.2 in) over 19 days, while June has a much lighter rainfall of 59 mm (2.3 in) across just 12 days. Furthermore, humidity levels are higher in June at 81%, compared to October's 74%. For more detailed information on June weather, you can visit Surabaya weather in June.

In comparing the weather conditions of October and July, October tends to be warmer overall, with average temperatures ranging from a minimum of 18°C (65°F) to a maximum of 33°C (91°F), compared to July's range of 15°C (59°F) to 30°C (87°F). Additionally, October experiences significantly more precipitation, with 132 mm (5.2 in) falling over 19 days, whereas July sees only 28 mm (1.1 in) across just 5 days. Despite having slightly higher humidity in July at 79%, October's humidity of 74% still contributes to a comparably humid atmosphere. For a deeper insight into the weather during July, you can check Surabaya weather in July.

October weather shows a noticeable increase in both temperature and precipitation compared to August. With average temperatures reaching up to 24°C (75°F) and maximums hitting 33°C (91°F), October is warmer than August, which has an average of 23°C (73°F) and a maximum of 31°C (88°F). However, October also brings significantly more rain, with 132 mm (5.2 in) falling over 19 days, while August experiences only 26 mm (1.0 in) over just 6 days. Additionally, humidity levels are slightly lower in August at 76% compared to October’s 74%. For further details, you can check Surabaya weather in August.

In comparing the weather patterns of October and September, October tends to be slightly warmer with average temperatures reaching 24°C (75°F), compared to September's average of 23°C (75°F). October features a wider temperature range, with minimums at 18°C (65°F) and maximums peaking at 33°C (91°F), while September’s temperatures span from a minimum of 17°C (62°F) to a maximum of 31°C (89°F). However, October is notably wetter, receiving 132 mm (5.2 in) of precipitation over 19 days, whereas September only sees 49 mm (1.9 in) across 10 days. Both months exhibit relatively high humidity levels, with October averaging 74% and September at 72%. For a more detailed look at September weather in Surabaya, you can visit Surabaya weather in September.

In October, the weather in Surabaya features a warm range of temperatures, with a minimum of 18°C (65°F), an average of 24°C (75°F), and a maximum of 33°C (91°F). The month experiences 132 mm (5.2 in) of precipitation over 19 days, accompanied by a humidity level of 74%. In contrast, November sees similar temperature ranges but significantly increases precipitation, totaling 377 mm (14.9 in) across 25 days, and a slight rise in humidity to 78%. This shift indicates a marked transition into the wetter season. For more information, check out Surabaya weather in November.

October and December exhibit distinct weather patterns. In October, temperatures range from a minimum of 18°C (65°F) to a maximum of 33°C (91°F), with an average of 24°C (75°F). The month experiences moderate precipitation of 132 mm (5.2 in) over approximately 19 days and maintains a humidity level of 74%. In contrast, December sees slightly higher minimum temperatures at 19°C (67°F) and a lower maximum of 30°C (87°F), averaging around 23°C (74°F). However, it is considerably wetter, with a significant 464 mm (18.3 in) of rainfall spread over 30 days and a humidity increase to 78%. For more details, check out Surabaya weather in December.

Compare Surabaya's Climate with Cities Worldwide

Conclusion: What to Expect From October Weather in Surabaya

As October rolls in, Surabaya experiences a distinct shift in weather, characterized by a mix of warm days and frequent rain. With average temperatures hovering around a comfortable 24°C (75°F), the month showcases a significant rise in humidity and an increase in precipitation, making it notably different from the drier months preceding it. With about 19 rainy days, the lush surroundings burst into life, providing a vibrant backdrop to the city's bustling atmosphere. For those planning a visit or looking to understand more about the weather patterns in this tropical gem, you can explore further details on Surabaya Climate.