Cilegon Weather has very different characters from other industrial cities in Java — as Indonesia's largest steel city located in the western tip of Java, Cilegon is located at the gate of the Sunda Strait. This strategic position makes Cilegon weather heavily influenced by the sea winds from Sunda Straits in the west and Banten Gulf in the north. For steel industry workers in Krakatau Steel, the driver who passes the Peacock Harbor, and the citizens of this industrial city, understand the weather is part of the safety of work and daily travel.
Key Takeaways
- Cilegon located at the west end of Java, bordering directly on Sunda Straits and Banten Bay.
- The sea winds from the Sunda Strait are very influential in Calleon's daily weather, especially the speed and direction of the wind.
- BMKG provides a Cilegon weather forecast in bmkg.go.id / weather / weather / 36.72.
- The high wave in the Sunda Strait could interfere with the operational crossing of the Barakheni.
- Cilegon average temperature 25-34 ° C with high humidity due to coastal positions from both directions.
Cilegon City Weather Profile
Cilegon is at 5-100 mdpl with varied topography. — From the lowlands of the West to the eastern hills. The city is bordered by the Sunda Strait in the northwest, Banten Bay in the north, and the attack districts in the east and south. These two large bodies of water became the main source of water vapor and wind that formed Cilegon weather Every day.
Cilegon average temperature is about 25 ° C-34 ° C with 75-85% humidity throughout the year. The average rainfall is about 1,800- 2,400 mm a year, with the October-April rainy season and the spring of May-September. The winds of the Sunda Strait have a cooling effect on the coastal region, but the industrial areas in the city can feel hotter due to the heat from the operation of the steel factory.
Sunda Channel and Weather
The Sunda Strait located just west of Cilegon is one of the busiest shipping routes in Indonesia. — Connect Java and Sumatra through Peacock Harbor and Bakheni. The weather conditions in the Sunda Strait are highly fluctuative and can go from quiet to dangerous in no time.
In the western season (December / February), the northwest strong winds can raise a high wave of 2- 4 meters in the Sunda Strait. These conditions often lead to delays or temporary suspension of the operational ferry-Bankheni ferry, which affects thousands of street users every day. Monitor sea weather conditions and waves through Indonesian weather map reality-time We were before planning a crossing trip.
The way today's weather check
- BMKG Cilegon — Visit bmkg.go.id / weather For the latest foreplay.
- BMKG wave forecasting — Check Sunda's wave conditions at bmkg.go.id before crossing to Bakheni.
- BMKG Info Application — Enable notifications for Cilegon locations and high wave warnings.
- Peacock ASDP — Monitor the ferry's operational status and latest sea weather conditions on the Ferizy app.
- Cuaca.in — Use Today's weather and 7-day forecast We are.
Cilegon Musical Weather Pattern
| Period | Weather Condition | Crossing Impact |
|---|---|---|
| December February | Western season, high winds, high waves | Risk of the highest ferry disturbance |
| _ | Transition, rain and wind are erratic | The sea conditions vary, monitor them daily |
| Mei-September | The dry season, the east wind is medium | The conditions of crossing are generally good |
| October | Early in the rainy season, late in the afternoon | The waves are beginning to rise. |
Tips Facing Cilegon Weather
- Always check the wave forecast before crossing to Sumatra — High waves in the Sunda Strait can appear within hours.
- Plan a ferry trip in the dry season (MEI-September) for more stable marine conditions.
- Prepare the rain gear. If you work in an industrial district — Heavy rain with strong winds from Sunda Straits can drop suddenly.
- Steel industry workers It needs to look at the forecasts of the wind because wind speeds affect Crane's operational and heavy tools in the field.
- Use Ferizy application ASDP and BMKG Info applications simultaneously for the most accurate travel plan.
To understand more about how to read weather forecast and wave from BMKG, read our guide about how to read BMKG weather forecast and Indonesia's best weather app.
General question about the Weather of Cilegon
What is the average temperature of Cilegon weather?
The average temperature in Cilegon is about 25 ° C-34 ° C The coastal areas of Sunda Strait and Banten Bay tend to be cooler by sea winds. Instead, the industrial areas in the city can be hotter because it's hotter than an operational steel industrial Krakatau Steel.
When is Sunda Strait the highest wave?
The waves in the Sunda Strait are the highest in the western season of December-February. In this period, a northwest strong wind could raise a wave of 2-4 meters potentially disrupting the operational ferry-Barakheni. In addition, the La Niña period also increased intensity and high wave frequencies.
Is Krakatau Mountain affecting the weather?
Krakatau's still active son at the Sunda Strait did not directly affect Cilegon's daily weather in normal condition. But when there's a massive eruption, volcanic ash can spread to the Cilegon region depending on direction and wind speed. A large Eruption could also trigger a tsunami that would have fatal impact on the Cilegon coastal region.
How did the weather affect the operations of the Merakheni ferry?
Indonesian ASDP Ferry will delay or halt while operational the ferry if high waves in the Sunda Strait exceed 2.5 meters or wind speeds above 25 knots. This decision was made based on BMKG forecasts and actual conditions in the field, with passengers safety as top priority.
When is the best time to cross over the Barakheni side of the weather?
The May-September period is the best time to cross the Sea-Weather. The dominant east wind in this period produces lower waves and calmer sea conditions. Avoid crossing at night during western season because wind and waves tend to be stronger.
With his position at the gate of the Sunda Strait, Cilegon weather has unique dimensions — Not just about rain and heat, but also about waves and sea winds that affect thousands of people who cross each day. Keep monitoring Today's weather and 7-day forecast We've been doing some activity in Cilegon City and surrounding it.

