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Mount Bromo Weather: When Is the Best Time to Visit?
Mount Bromo Weather is best in August, the driest month on the caldera rim with 38 mm of rain over 9.9 rainy days. Nights drop to 11°C (52°F), and December to March is the wet stretch with 456 to 528 mm of rain a month. This guide gives the monthly table for every month including October, November and December, when to avoid the park and how hard the crater climb is.
Quick answer Best month, cold and rainy months in brief
August is the best month for Mount Bromo weather, with about 38 mm of rain over 9.9 rainy days and a low of 11°C (52°F) on the caldera rim. June to September is the reliable window. December to March brings 456 to 528 mm of rain a month, so sunrise is often hidden by cloud.
Key takeaways
- Pick between the viewpoints and tours in the Mount Bromo sunrise guide, because the weather decides what you actually see.
- Check how hard the crater walk is in the Mount Bromo hike guide, since rain makes the sand and stairs slippery.
- Planning to add Kawah Ijen? The Bromo Ijen tour guide compares the 2 and 3 day trips.
- Staying on the rim the night before? See Cemoro Lawang for the overnight option.
How cold is it in Mount Bromo?
Lows on the caldera rim run from 11°C (52°F) in August to 13.6°C (57°F) in December, and the Penanjakan viewpoint is colder still.
The caldera rim near Cemoro Lawang sits at about 2,100 m, and Mount Bromo itself is 2,392 m. Penanjakan, the main sunrise viewpoint, is higher at 2,770 m.
Temperatures at the rim
Averages for the rim near Cemoro Lawang show afternoon highs of 19.1°C (66°F) to 20.5°C (69°F) all year. Night lows range from 11°C (52°F) in August to 13.6°C (57°F) in December. That is cool, not freezing, and the lows differ by under 3°C between seasons.
Why sunrise feels colder than the numbers
Penanjakan stands 2,770 m above sea level, higher than the point these figures describe, so it is colder there at dawn. Standing still waiting for the light makes a mild night feel sharp.
The Cheapbromo Private Bromo Sunrise Day Trip recommends warm clothing, a jacket and hiking shoes for the cold and the crater walk. Pack a fleece, long trousers and a hat even in August, and keep a rain layer for the wetter months.
Sources: Copernicus Climate Change Service, Indonesia Travel.
Morning mist fills the Tengger caldera below the slopes of Mount Bromo in East Java. Photo: Jakub Hałun, CC BY-SA 4.0, via Wikimedia Commons
What Is the Bromo Weather by Month?
Rain is the difference between months, because temperatures barely move: August has 38 mm of rain, February has 528 mm.
The table below gives the average daytime high, night low, rainfall and rainy days for each month on the caldera rim near Cemoro Lawang, from 30 years of ERA5 reanalysis data (1995 to 2024). October, November and December are the months most visitors ask about.
Month-by-month table
The last column is the verdict for a sunrise trip. Figures are for the rim at about 2,100 m, so Penanjakan at 2,770 m will be colder.
| Month | High / low | Rain | Rainy days | Verdict |
|---|---|---|---|---|
| January | 19.2°C (67°F) / 13.4°C (56°F) | 499 mm | 29.5 | Wet, avoid |
| February | 19.2°C (67°F) / 13.3°C (56°F) | 528 mm | 27.6 | Wettest, avoid |
| March | 19.4°C (67°F) / 13.3°C (56°F) | 456 mm | 28.9 | Wet, avoid |
| April | 19.4°C (67°F) / 13.1°C (56°F) | 262 mm | 25.7 | Wet, drying slowly |
| May | 19.4°C (67°F) / 12.7°C (55°F) | 141 mm | 19.3 | Good, rain easing |
| June | 19.2°C (67°F) / 12.2°C (54°F) | 84 mm | 15.2 | Very good |
| July | 19.1°C (66°F) / 11.4°C (52°F) | 54 mm | 10.8 | Very good, cold nights |
| August | 19.5°C (67°F) / 11°C (52°F) | 38 mm | 9.9 | Best, driest and coldest |
| September | 20.4°C (69°F) / 11.4°C (53°F) | 53 mm | 10.9 | Very good |
| October | 20.5°C (69°F) / 12.3°C (54°F) | 146 mm | 18.9 | Fair, rain returning |
| November | 20°C (68°F) / 13.3°C (56°F) | 267 mm | 25.6 | Wet, risky for sunrise |
| December | 19.4°C (67°F) / 13.6°C (57°F) | 461 mm | 29.1 | Wet, avoid |
October, November and December
October is the shoulder month. It has 146 mm of rain over 18.9 rainy days, about double the driest months but a long way below the wet season. Highs reach 20.5°C (69°F), the warmest of the year.
November is where the wet season takes hold, with 267 mm over 25.6 rainy days. A rainy day is more likely than a dry one on almost any date. December is wetter again at 461 mm over 29.1 rainy days, with a night low of 13.6°C (57°F), the mildest of the year. Rain and cloud on the sunrise side are the real risk in these two months, not the cold.
Source: Copernicus Climate Change Service.
What is the best month to visit Bromo?
August is the best single month: the least rain (38 mm over 9.9 rainy days), with July and September close behind.
If you want the clearest chance of seeing the sun come up over the caldera, the dry months of June to September are the answer.
The verdict
August has the lowest rain of the year at 38 mm over 9.9 rainy days. July follows with 54 mm over 10.8 rainy days, and September with 53 mm over 10.9 rainy days. June is still good at 84 mm over 15.2 rainy days.
The trade-off is the cold. August has the lowest night low at 11°C (52°F), against 12.3°C (54°F) in October. If you feel the cold, September or June give a slightly gentler dawn with almost the same rain.
If you can only go in the wetter months
May is the first good month after the rains, with 141 mm over 19.3 rainy days. October is the last before the wet season returns. Both are workable, and a tour that runs in all seasons removes the planning risk.
The Bromo Sunrise Shared Guided Tour costs $36 per person, takes 11-12 hours and has free cancellation up to 24 hours before. You can compare the whole range on the Bromo tours from Surabaya page.
Source: Copernicus Climate Change Service.
Tours That Fit
Sunrise day trips and a 3 day route that run in every season, each with its own cancellation terms on the card.
from $36
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Bromo Sunrise Shared Guided Tour from Surabaya
Shared sunrise trip from Surabaya with the park ticket, a classic jeep, a Javanese breakfast and an English-speaking guide, back around 12:30-13:00.
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from $160
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Mount Bromo Sunrise 1-Day Private Tour
Private car and private jeep from Surabaya or Malang, with tickets, a breakfast buffet, a coffee break and travel insurance in the price.
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Tumpak Sewu, Bromo and Ijen 3-Day Trip
Tumpak Sewu, the Bromo sunrise and Ijen in 3 days with 2 nights, all three tickets, a gas mask and the health certificate, ending in Bali or back in Surabaya.
Check AvailabilityWhen to avoid Mount Bromo?
Avoid December to March for sunrise, and plan around the park closures for Nyepi and Idul Fitri, Wulan Kapitu and Kasada.
Two things can spoil a trip: heavy rain, and the park being shut. The first is a pattern in the weather data, the second is announced by the park office.
The wettest months
February is the wettest month on the rim with 528 mm over 27.6 rainy days. January has 499 mm over 29.5 rainy days, and December has 461 mm over 29.1. March still has 456 mm over 28.9 rainy days.
Cloud often sits over the caldera at dawn in these months, and the sand and stairs are wet. Tours run all year, but the odds of a clear sunrise are lower. April, at 262 mm over 25.7 rainy days, is the first month to ease off.
Closures and ceremonies
The park closes for religious reasons, and a closed gate cannot be solved by a tour operator. In 2025 all tourism in the park was shut from 28 March to 1 April for Nyepi and Idul Fitri, and it reopened on 2 April. Dates change each year, so check the park announcement before you fix a date in that part of the calendar.
The park also announces a closure of the Bromo area for Wulan Kapitu, the seventh Tengger month, a sacred fasting month that lasts about one month. Yadnya Kasada is held on the 14th day of the Kasada month in the Tengger Hindu lunar calendar. Ask your operator whether your date falls in any of these. Paid park tickets cannot be rescheduled and are not refundable, so pick a tour with its own cancellation terms.
Sources: Copernicus Climate Change Service, Bromo Tengger Semeru National Park, Bromo Tengger Semeru National Park, Indonesia Travel, Bromo Tengger Semeru National Park.
How difficult is it to climb Mount Bromo?
The climb is short, about 250 steps from the foot of the stairs, but cold and wet weather make it harder than the number sounds.
The crater walk is the easy part of the trip. The difficult part is the hour in the dark, the altitude and the weather.
The stairs and the sand
The sand sea below the crater covers about 10 km2, and the climb to the crater is about 250 steps. Ponies carry visitors across the sand to the foot of the stairs. Most of the effort is the stairs themselves at an altitude of 2,392 m, where the air is thinner.
In dry months the steps are firm. After rain the sand and stairs are slick, and cloud means you climb without a view. The Mount Bromo hike guide explains the route in more detail.
Fitness notes from the tour listings
The East Journey Private Bromo Sunrise Tour asks for at least a moderate level of physical fitness and is not recommended for travelers with spinal injuries, pregnant travelers or travelers with poor cardiovascular health. The Bromo Sunrise Shared Guided Tour is not suitable for people with altitude sickness, wheelchair users or children under 90 cm.
Sources: Indonesia Travel, Sidita East Java Tourism Office.
What about a Mount Bromo weather forecast for 10 or 14 days?
Check a forecast in the last few days before your trip, and treat anything further out as a guess.
Searches for a 14 day or 30 day forecast are common, but mountain weather moves fast, so the monthly averages above are a better guide for choosing the month.
How to use a forecast
Use the monthly table to choose the month. Then look at a forecast in the last days before you leave and expect it to change. A town forecast says little about Penanjakan at 2,770 m, which is colder.
The tours here run in all seasons, and the cancellation terms are on each card. The Bromo Sunrise Shared Guided Tour offers free cancellation 24 hours ahead. The East Journey Private Bromo Sunrise Tour says the listing may be cancelled if the weather is bad, with a full refund when it is cancelled at least 24 hours before departure. Read both before you decide.
Sources: Copernicus Climate Change Service, Indonesia Travel.
Dry, clear morning light on Mount Batok and the Sea of Sand in the Tengger caldera. Photo: Eveline Tania Mustika, CC BY-SA 4.0, via Wikimedia Commons
Mount Bromo Weather FAQ
How cold is it in Mount Bromo?
Night lows on the rim near Cemoro Lawang run from 11°C (52°F) in August to 13.6°C (57°F) in December, and Penanjakan at 2,770 m is colder. See the month-by-month table.
What is the best month to visit Bromo?
August, with about 38 mm of rain over 9.9 rainy days. July and September are close behind, as the best month section explains.
When to avoid Mount Bromo?
Avoid December to March for a clear sunrise, when rain is 456 to 528 mm a month, and check the park closures for Nyepi, Idul Fitri and Wulan Kapitu. See when to avoid.
How difficult is it to climb Mount Bromo?
The climb is about 250 steps and short, but cold, altitude and wet stairs make it harder. The Mount Bromo hike guide covers it.
What is the Mount Bromo weather in October, November and December?
October has 146 mm of rain over 18.9 rainy days, November 267 mm over 25.6 and December 461 mm over 29.1. Compare the options in the Bromo Ijen tour guide if you add a second volcano.
Do Bromo tours run in the rain?
The tours here run in all seasons, and cancellation terms are on each card, such as free cancellation 24 hours ahead on the Bromo Sunrise Shared Guided Tour.
More Guides
- Mount Bromo Hike: How Hard Is the Walk to the Crater?
Mount Bromo hike: about 250 steps to the crater and a 1.5 km sand walk. See times, fees and closures, then plan your 2027 trip.
- Bromo Ijen Tour from Surabaya: 2 and 3 Day Trips Compared
Compare Bromo Ijen tours from Surabaya for 2027: 2 and 3 day trips, midnight pickup, Ijen gas mask included. Check availability.
- Bromo Private Tour from Surabaya: Which Private Jeep Day to Book?
Compare private Bromo jeep tours from Surabaya for 2027: sunrise at 2,770 m, midnight pickup, free cancellation. Check availability.