BADAN METEOROLOGI,
KLIMATOLOGI DAN GEOFISIKA
Indonesian Weather Bulletin for Shipping
( Metarea XI)
BMKG Jakarta, Tuesday 02 December 2025 At 0000 UTC
Part I : Warning
TROPICAL LOW 93W 1008 hPa AT 12.9 °N, 137.0 °E MAXIMUM WIND SPEED 15 KNOTS MOVING TO NW
Part II : General Synopsis
Monday 01 December 2025 at 12 UTC SOUTHWESTERLY TO NORTHWESTERLY GENTLE TO STRONG FLOW IN THE NORTHERN PART OF INDONESIA SOUTHEASTERLY TO SOUTHWESTERLY GENTLE TO STRONG FLOW IN THE SOUTHERN PART OF INDONESIA
Part III : Area Forecasts
Valid until Wednesday 03 December 2025 at 00 UTC
MALACCA STRAIT
Northwesterly
8-11 kt
Smooth Sea
INDIAN OCEAN WESTERN OF ACEH
Northwesterly
1-9 kt
Moderate Sea
INDIAN OCEAN WESTERN OF LAMPUNG
Southeasterly
9-16 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF JAVA
Southeasterly
11-16 kt
Moderate Sea
INDIAN OCEAN SOUTHERN OF BALI
Northerly
4-14 kt
Moderate Sea
NORTH NATUNA SEA
Northwesterly
2-9 kt
Slight Sea
KARIMATA STRAIT
Northerly
0-10 kt
Slight Sea
JAVA SEA
Easterly
1-12 kt
Slight Sea
MAKASSAR STRAIT
Northwesterly
1-12 kt
Slight Sea
BALI SEA
Northerly
3-19 kt
Slight Sea
SUMBAWA SEA
Northwesterly
1-18 kt
Slight Sea
FLORES SEA
Southwesterly
1-15 kt
Slight Sea
BANDA SEA
Westerly
1-14 kt
Slight Sea
CERAM SEA
Westerly
2-14 kt
Slight Sea
SULAWESI SEA
Westerly
4-14 kt
Moderate Sea
MOLLUCA SEA
Westerly
1-17 kt
Moderate Sea
WESTERN PART OF PACIFIC OCEAN
Westerly
1-21 kt
Moderate Sea
ARAFURA SEA
Westerly
4-12 kt
Slight Sea
⚠️ Important Notes
Please be aware, wind gusts can be a further 40 percent stronger than the averages given here, and maximum waves may be up to twice the significant height
Reference Scales
Beaufort Wind Scale
| Force | Description | Speed (knots) |
|---|---|---|
| 0 | Calm | < 1 |
| 1 | Light air | 1-3 |
| 2 | Light breeze | 4-6 |
| 3 | Gentle breeze | 7-10 |
| 4 | Moderate breeze | 11-16 |
| 5 | Fresh breeze | 17-21 |
| 6 | Strong breeze | 22-27 |
| 7 | Near gale | 28-33 |
| 8 | Gale | 34-40 |
| 9 | Strong gale | 41-47 |
Douglas Sea Scale
| Grade | Description | Height (m) |
|---|---|---|
| 0 | Calm (Glassy) | 0 |
| 1 | Calm (Rippled) | 0-0.1 |
| 2 | Smooth | 0.1-0.5 |
| 3 | Slight | 0.5-1.25 |
| 4 | Moderate | 1.25-2.5 |
| 5 | Rough | 2.5-4 |
| 6 | Very rough | 4-6 |
| 7 | High | 6-9 |
| 8 | Very high | 9-14 |
| 9 | Phenomenal | >14 |
KONTAK KAMI :
Jl. Angkasa I No.2 Kemayoran, Jakarta Pusat 10610, PO Box 3540 Jkt.
Call Center (021) 196
Fax (021) 4246703
cc196@bmkg.go.id
TAUTAN :
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