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Ijen

Indonesia travel guide

What to see in Ijen

A volcano in East Java with a turquoise acid lake in its crater, sulphur miners and, at night, blue flames.

Updated 19 October 2026 · How we make our guides

  • 5 must-see places
  • Best time: from April to October
Photo: CEphoto, Uwe Aranas · CC BY-SA 3.0

Ijen highlights

The places you can’t miss. In the app we sort them by day and close to each other.

  1. Crater lake

    The largest acid lake in the world.

  2. Blue fire

    Sulphur gas that burns before dawn.

  3. Sulphur miners

    They carry blocks down the slope.

  4. Banyuwangi

    The base town, facing Bali.

  5. Bromo

    Java’s other famous volcano.

Day trips from Ijen

We take you straight to the best-rated tour on GetYourGuide, with its reviews and dates.

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When to travel to Ijen

The months with the fewest warnings to travel to Ijen are from April to October. If you can, avoid from December to February (rainy season).

  1. Jan with strong warnings
  2. Feb with strong warnings
  3. Mar with warnings
  4. Apr no warnings
  5. May no warnings
  6. Jun no warnings
  7. Jul no warnings
  8. Aug no warnings
  9. Sep no warnings
  10. Oct no warnings
  11. Nov with warnings
  12. Dec with strong warnings
  • from November to March

    Rainy season

    From November to March it rains almost every day, usually in short storms; the sea is rougher for crossing to Nusa or the Gilis.

    What to do: Book boat trips with flexible dates and keep the mornings for outdoor plans.

  • February, March

    Ramadan (approximate dates)

    During the day many restaurants close or open less and museum and shop hours change. The evenings, with iftar, are very special.

    What to do: Out of respect, don’t eat or drink in the street during the day; book dinner for after sunset.

Where and what to eat

To eat like a local: warung. The dishes you can’t miss are in the Indonesia guide.

Frequently asked questions about Ijen

What to see in Ijen?

Crater lake, Blue fire, Sulphur miners, Banyuwangi and Bromo.

What to see in Ijen in one day?

Don’t miss Crater lake, Blue fire, Sulphur miners, Banyuwangi and Bromo. To split it into days and areas without crossing the city back and forth, the Bagintravel app plans your trip in a minute.

What’s the best time to travel to Ijen?

The months with the fewest warnings to travel to Ijen are from April to October. If you can, avoid from December to February (rainy season).

What day trips can you take from Ijen?

Ijen by night and Ijen from Bali.

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Guide reviewed 19 October 2026. Places, areas and seasons: the same data the Bagintravel app uses. Sources and method.