Summit weather · Jawa

Gunung Slamet weather today

7-day forecast at the 3,428 m summit · Jawa Tengah · updated automatically every 3 hours

Gunung Slamet is a volcano with a summit of 3,428 m in Jawa Tengah province, Jawa region. The nearest major city in our list is Cirebon (± 92 km straight-line). This page shows a 7-day weather forecast at summit elevation, not for the nearest town, updated automatically every 3 hours. Because it is listed as a volcano, also check its activity status at MAGMA Indonesia before climbing. Hiking conditions today according to the model: Good – summit temperature 4–10 °C, maximum wind 13 km/h and rain 2.3 mm.

10 °C

Heavy rain · feels like 8 °C

Wind10 km/h N
Cloud64%
Humidity81%
TodayGood

Conditions around 13:00 WIB · Model updated 3 November 2026 at 12:20 WIB · fetched 13:08 WIB

Over the next 7 days, the day with the best summit weather score according to the model is Tuesday, 3 November (rain 2.3 mm, max wind 13 km/h, temperature 4–10 °C).

7-day summit weather forecast for Gunung Slamet

7-day forecast at 3,428 m (WIB time)
Day	Daytime weather	Temp min/max	Lowest feels-like	Max wind	Rain	Avg cloud	Sunrise / sunset	Hiking conditions
Tuesday3 Nov	Rain	4 / 10 °C	3 °C	13 km/h	2.3 mm	92%	05:15 / 17:37	Goodwind < 30 km/h, rain < 5 mm, no thunderstorm signal
Wednesday4 Nov	Rain	4 / 12 °C	2 °C	12 km/h	5.8 mm	93%	05:15 / 17:38	Cautionrain 5–19.9 mm
Thursday5 Nov	Rain	6 / 11 °C	4 °C	13 km/h	8.4 mm	91%	05:15 / 17:38	Cautionrain 5–19.9 mm
Friday6 Nov	Rain	5 / 10 °C	4 °C	9 km/h	6.8 mm	97%	05:14 / 17:38	Cautionrain 5–19.9 mm
Saturday7 Nov	Rain	6 / 12 °C	6 °C	6 km/h	5.4 mm	95%	05:14 / 17:38	Cautionrain 5–19.9 mm
Sunday8 Nov	Rain	5 / 10 °C	6 °C	9 km/h	9.6 mm	91%	05:14 / 17:38	Cautionrain 5–19.9 mm
Monday9 Nov	Rain	5 / 10 °C	6 °C	6 km/h	6.6 mm	99%	05:14 / 17:39	Cautionrain 5–19.9 mm

Good wind < 30 km/h, rain < 5 mm/day, no thunderstorm signal, feels-like > 0 °CCaution wind 30–49 km/h, or rain 5–19.9 mm, or feels-like ≤ 0 °CPoor wind ≥ 50 km/h, or rain ≥ 20 mm, or a thunderstorm signal, or feels-like ≤ −10 °C How we rate

Hourly, next 24 hours

Time (WIB)	Temp	Feels like	Wind	Rain	Cloud
13:00	🌧️ 10 °C	8 °C	10 km/h N	1.0 mm	64%
14:00	🌦️ 9 °C	7 °C	11 km/h NE	0.6 mm	88%
15:00	☁️ 9 °C	7 °C	13 km/h NE	0.0 mm	88%
16:00	🌦️ 8 °C	6 °C	13 km/h E	0.3 mm	85%
17:00	🌦️ 7 °C	5 °C	11 km/h E	0.4 mm	92%
18:00	🌫️ 6 °C	4 °C	12 km/h SE	0.0 mm	98%
19:00	🌫️ 6 °C	4 °C	11 km/h SE	0.0 mm	99%
20:00	🌫️ 6 °C	3 °C	10 km/h SE	0.0 mm	100%
21:00	🌫️ 6 °C	4 °C	9 km/h SE	0.0 mm	99%
22:00	🌫️ 6 °C	4 °C	8 km/h SE	0.0 mm	98%
23:00	🌫️ 6 °C	4 °C	8 km/h SE	0.0 mm	98%
00:00	🌫️ 5 °C	4 °C	7 km/h SE	0.0 mm	98%
01:00	🌫️ 5 °C	4 °C	6 km/h S	0.0 mm	99%
02:00	🌫️ 5 °C	4 °C	6 km/h SE	0.0 mm	100%
03:00	🌫️ 4 °C	3 °C	6 km/h S	0.0 mm	100%
04:00	🌫️ 4 °C	3 °C	6 km/h S	0.0 mm	100%
05:00	🌫️ 4 °C	2 °C	6 km/h S	0.0 mm	100%
06:00	🌫️ 4 °C	2 °C	8 km/h S	0.0 mm	100%
07:00	⛅ 7 °C	6 °C	7 km/h E	0.0 mm	96%
08:00	⛅ 10 °C	10 °C	8 km/h E	0.0 mm	97%
09:00	⛅ 11 °C	11 °C	9 km/h NE	0.0 mm	99%
10:00	🌦️ 12 °C	12 °C	10 km/h N	0.1 mm	98%
11:00	🌧️ 12 °C	12 °C	12 km/h N	1.1 mm	95%
12:00	🌧️ 11 °C	11 °C	12 km/h N	1.5 mm	71%

⚠️ Gunung Slamet is listed as a volcano. Its activity status (Normal/Waspada/Siaga/Awas) and hazard radius can only be confirmed at MAGMA Indonesia. This site does not show volcano status.

SIMAKSI permit, quota & hiking status

No online data – check with the basecamp

Manager: Perhutani with basecamp operators
Official website: www.perhutani.co.id
Registration at the basecamp; we have not found an official online booking system.
Official contact: no official contact found yet (other than the site above).
Open/closed status: check the official announcements on the manager's website.
Volcano status: check the activity level at MAGMA Indonesia (PVMBG). We do not fetch MAGMA data automatically because that site's robots.txt disallows it.

Source: www.perhutani.co.id/pendakian-gunung-slamet-dibuka-lagi-setelah-tutup-2-bulan · last verified 2 November 2026.

Hiking routes (estimated from OSM data)

The routes below are hiking routes mapped in OpenStreetMap. Distance, total ascent and time are estimates from the OSM geometry and the Copernicus GLO-30 elevation model, not official data from the manager. Method.

Route via Guci

OSM route: Gunung Slamet (Guci BC)

Route start: -7.2086, 109.1728± 1,439 m (DEM)
Distance to highest point: 8.1 km
Total ascent: 2,004 m
Average gradient: 24.3%
Estimated ascent time: 4 h 25 min – 4 h 55 minTobler & Naismith range, moving time without breaks
Round trip estimate (rough): ± 7 h 35 minmoving time only, excluding breaks/overnight stays

Weather at the trailhead vs the summit

Day	Summit (3,428 m)	Route via Guci (± 1,439 m)
Tuesday3 Nov	4–10 °C2.3 mm · 13 km/h	16–22 °C2.3 mm · 13 km/h
Wednesday4 Nov	4–12 °C5.8 mm · 12 km/h	16–24 °C5.8 mm · 12 km/h
Thursday5 Nov	6–11 °C8.4 mm · 13 km/h	18–24 °C8.4 mm · 13 km/h
Friday6 Nov	5–10 °C6.8 mm · 9 km/h	17–22 °C6.8 mm · 9 km/h
Saturday7 Nov	6–12 °C5.4 mm · 6 km/h	18–24 °C5.4 mm · 6 km/h
Sunday8 Nov	5–10 °C9.6 mm · 9 km/h	17–22 °C9.6 mm · 9 km/h
Monday9 Nov	5–10 °C6.6 mm · 6 km/h	17–22 °C6.6 mm · 6 km/h

MET Norway forecast at the coordinates and DEM elevation of the OSM route start. The OSM route start is not necessarily the exact basecamp/registration post.

Route data © OpenStreetMap contributors (ODbL). Elevation: Copernicus GLO-30 DEM (© DLR e.V. 2010–2014 and © Airbus Defence and Space GmbH 2014–2018, provided under COPERNICUS by the European Union and ESA). Derived dataset: trails.json (ODbL).

Facts: Gunung Slamet

Summit elevation: 3,428 mSource: Wikidata Q580131 (P2044)
Coordinates: -7.2415, 109.2150
Province: Jawa Tengah
Region: Jawa
Time zone: WIB (UTC+7)
Elevation class: C (2,500–3,499 m)
Difficulty: no verified data yet

Nearby mountains

Gunung Prau weather 79 km · 2,590 m
Gunung Sindoro weather 86 km · 3,136 m
Gunung Sumbing weather 96 km · 3,371 m
Gunung Ciremai weather 97 km · 3,078 m
Puncak Suroloyo weather 116 km · 981 m
Gunung Ungaran weather 125 km · 2,050 m

Nearest cities

Mountains near Cirebon: ± 92 km straight-line
Mountains near Semarang: ± 136 km straight-line
Mountains near Yogyakarta: ± 144 km straight-line

Straight-line distance from the city centre, not road distance.

Other lists

Want to compare? Compare Gunung Slamet with other mountains · Prepare your packing list.

Frequently asked questions

How high is Gunung Slamet?

Gunung Slamet has an elevation of 3,428 m according to Wikidata Q580131 (P2044).

Which province is Gunung Slamet in?

Gunung Slamet is in Jawa Tengah province, Jawa region (based on the summit coordinates -7.2415, 109.2150).

What is the weather on the summit of Gunung Slamet today?

According to the MET Norway model (updated 3 November 2026 at 12:20 WIB), today's hiking conditions are rated Good: temperature 4–10 °C, lowest feels-like 3 °C, maximum wind 13 km/h, rain 2.3 mm. This is model data, not an official BMKG warning.

What time is sunrise on the summit of Gunung Slamet tomorrow?

Around 05:15 WIB (Wednesday, 4 November 2026), calculated for the standard horizon. Sunset is around 17:38 WIB.

How cold is the summit of Gunung Slamet this week?

The lowest summit temperature over the next 7 days is forecast at 4 °C; with wind it can feel colder. Bring warm layers and rain gear.

Which hiking routes up Gunung Slamet are on the open map?

Routes mapped in OpenStreetMap: Route via Guci (± 8.1 km, ascent ± 2,004 m). Figures are estimates from OSM and DEM data.

Does hiking Gunung Slamet need a SIMAKSI permit or booking?

Hiking on Gunung Slamet is managed by Perhutani with basecamp operators. Open/closed status and quotas must be checked directly on the manager's official channels.

Is Gunung Slamet an active volcano?

Gunung Slamet is listed as a volcano in Wikidata. The current activity level (Normal/Waspada/Siaga/Awas) can only be confirmed at MAGMA Indonesia (PVMBG).

Sources

Coordinates: OpenStreetMap node 5963919037
Elevation: Wikidata Q580131 (P2044)
Province: derived from the coordinates via OpenStreetMap Nominatim (reverse geocoding of the coordinates)
Weather: MET Norway Locationforecast 2.0 (CC BY 4.0), with elevation adjustment to 3,428 m
Wikipedia (ID)
Wikipedia (EN)

Method note: temperature is adjusted to summit elevation by MET Norway; wind and rain come from the global model grid, so real wind on an exposed summit can be stronger. Gust data is not available from the global model for Indonesia. Sunrise/sunset times are calculated for the standard horizon. Full details on data & methods.

Important: the forecasts on this site are automatically processed numerical model output (MET Norway), not official BMKG warnings and not volcano status. Always check BMKG, activity status at MAGMA Indonesia (PVMBG), and trail opening/closure announcements from the national park or basecamp before you climb.