Scuba Diving at Siaba Besar

Diving atSiaba Besar (Indonesia)

While generally considered calm, currents can become stronger towards the southern edge of Siaba Besar. This central Komodo National Park site is widely recognized for its thriving turtle population, earning it the nickname "Turtle City." Depths here accommodate various skill levels, often reaching 22-23 m (72-75 ft) for advanced divers, providing diverse exploration opportunities.

Tonight's objective overview for Siaba Besar shows an air temperature of 29°C. The measured surface conditions include wave heights around 0.4 m. This environmental data is logged for the close of the day.

Dive Site Location & Key Facts

Everything you need to know about this dive site.

Coordinates-8.5483, 119.6488
Site Characteristics
Sandy Bottom
Max Depth25m / 82ft
Entry Typeboat
Water Typesalt
Dive Types
Reef

Dive Site Overview

Exploring Siaba Besar offers a dive experience centered around a tranquil, shallow bay distinguished by bright white sand and extensive lettuce coral formations. This underwater landscape creates an ideal habitat for numerous sea turtles, which are readily observed and quite accustomed to divers.

Many dive operators utilize the protecting side of the bay, where currents are typically minimal, making it an excellent location for check-out dives and for new open water divers to gain confidence. The site's reputation for pristine coral gardens and a wealth of smaller marine life complements the frequent turtle encounters. Divers can traverse a range of depths, from the very shallow 4-6 m (13-20 ft) areas perfect for snorkelers and introductory dives, to deeper sections accommodating more experienced individuals.

Siaba Besar's inviting conditions and abundant life make it a consistent favorite within the Komodo National Park.

Siaba Besar

Conditions are Excellent

9/10
Confidence: 8/10
Indicates meteorological model agreement and data availability.

Best Dive Window

07:00 - 14:00

Optimal conditions expected

06:12
18:45
H: 10:45
L: 16:20
Air / Sea Temp
29° / 29°
Wave Height
0.4 m
Wind Speed
23 km/h SE
Rain Chance
0%

Current conditions near Siaba Besar show 29° air, 29° sea temperature, 0.4 m waves, and 23 km/h wind. Forecast data is refreshed regularly to ensure accuracy.

Radius: ~12km
Updated: Jun 14, 2026, 12:31 local time
MARINE: OPEN-METEOWEATHER: YR.NO

Best Time to Dive

Optimizing your dive experience at Siaba Besar aligns with Indonesia's dry season, typically spanning from April through November. During these months, the region experiences consistently clearer waters and a higher probability of encountering diverse marine creatures. Air temperatures remain comfortably warm, averaging between 27°C (81°F) in July and 28.5°C (83°F) in November. Rainfall is notably lower, particularly from May to October, often registering less than 1 mm (0.04 inches) per month, which contributes to favorable surface conditions with minimal wave height. Conversely, the wetter months of January and December see increased rainfall, averaging over 8 mm (0.3 inches), which may occasionally affect visibility. For the calmest conditions and best visibility, consider planning your trip within the April to November window.

PEAK SEASON SCORE

90/100
Excellent

Scores combine air & water temps, waves, wind & rainfall for overall conditions.


BEST MONTHS TO DIVE

APR
SEP
NOV
DIVE SCORE
(0–100)
79
JAN
83
FEB
86
MAR
90
APR
88
MAY
87
JUN
83
JUL
87
AUG
90
SEP
90
OCT
91
NOV
83
DEC
AIR TEMP (°C)
28
27
28
28
28
27
27
27
27
28
28
28
WAVES (M)
0.6
0.5
0.5
0.4
0.5
0.5
0.6
0.5
0.4
0.4
0.3
0.5
WIND (KM/H)
25
22
22
20
24
24
28
24
22
22
21
22
RAIN (MM)
8.4
6.6
4.7
4.0
0.8
0.3
0.4
0.1
0.1
0.5
2.5
8.5
DIVE SCORE GUIDE (0–100)
Excellent (90–100)
Very Good (80–89)
Good (70–79)
Moderate (50–69)
Poor (30–49)
Not Recommended (0–29)

Monthly records compiled from satellite and marine observation nodes over the last 3 years. Data provided by Open-Meteo and MET Norway.

Dive Experience & Conditions

Navigating Siaba Besar often begins in its calm, sheltered bay, providing an easy entry point for divers of all experience levels. Open Water certified divers typically explore depths suitable for recreational limits, while Advanced divers can extend their exploration into slightly deeper areas. Shallower sections are vibrant with light reflecting off the white sandy bottom and extensive coral formations. Water temperatures here are consistently warm, generally ranging from 26°C to 29°C (79°F to 84°F). Currents at Siaba Besar can be dived during both rising and falling tides, with operators typically positioning dives on the bay's protected side where the flow is less intense. While the bay itself is serene, currents pushing southward during a falling tide can strengthen further out, requiring careful planning and guidance to avoid stronger flows.

Dive Difficulty & Safety Guidelines

Ensuring a safe dive at Siaba Besar largely hinges on acknowledging the site's variable current patterns. While the inner bay offers calm, shallow conditions ideal for entry-level divers and check-out dives, movements towards the southern area of the site during a falling tide can encounter stronger currents. Consequently, divers should always follow their experienced dive guides, who are proficient in navigating these conditions. Small dive groups are typically maintained, enhancing both safety and the quality of the underwater experience. Practicing responsible diving techniques is paramount here, especially regarding coral conservation and minimizing ecological impact, as the site is within the protected Komodo National Park. Divers must maintain neutral buoyancy and avoid contact with the fragile coral formations and marine life.

Recommended Equipment

  • Dive Computer
  • DSMB

This gear list is based on verified equipment signals for Siaba Besar, Indonesia. Always confirm final gear choices with your dive operator, guide, or liveaboard.

Recommended Dive Suit

According to recent observations, water temperatures near Siaba Besar are approximately 29°C (84°F). Surface air temperatures are resting at 29°C (84°F).

Environmental conditions appear stable for the near future.

In water temperatures like these, 2-3mm shorty or light wetsuit typically offers sufficient warmth for most recreational dives. A hood or vest is suggested for sensitive divers due to surface winds. Some divers naturally tolerate cooler water better than others.

Siaba Besar conditions last reviewed: 12:31 local time (UTC+8), Jun 14, 2026

Emergency & Medical Support

Essential information to help you plan your dive trip to Siaba Besar.

Hyperbaric Chamber

Hyperbaric chambers are a critical part of dive safety infrastructure. Availability varies significantly by region, and not all dive areas have immediate access.

Before diving, it's recommended to:

  • confirm nearest medical facilities
  • check emergency procedures with local dive operators
  • ensure dive insurance covers evacuation if required
24/7 Available

Divers Alert Network

Diving emergency assistance available through DAN World.

+1-919-684-9111
  • 24/7 emergency hotline
  • Diving medical assistance
  • Evacuation coordination
View official DAN emergency contacts

Emergency contacts are provided for reference. Always verify local emergency services before diving.

Marine Life at Siaba Besar

The underwater landscape of Siaba Besar is a vibrant sanctuary, particularly celebrated for its abundant sea turtle population. Numerous Hawksbill turtles have made the extensive lettuce coral formations their home, frequently allowing divers calm, close encounters. Beyond the graceful turtles, the site's sandy areas and coral gardens teem with diverse smaller marine life. Expect to observe schools of tropical fish moving through the coral, alongside various critters that hide among the coral stacks. The interplay of sunlight on the white sand further illuminates this active ecosystem.

Image contributors:Albert kok, Claudio Giovenzana
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Dive Centers Near Siaba Besar

No Dive Centers Local To Siaba Besar

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Nearest Airports

Nearest airports to help plan travel to this dive area.

Sultan Muhammad Salahuddin AirportBMU
106 km
Lombok International AirportLOP
372 km
Denpasar I Gusti Ngurah Rai International AirportDPS
494 km
💵Currency:IDR

Search Flights

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Frequently Asked Questions

What marine life is most notable at Siaba Besar?

Siaba Besar is primarily known for its prolific sea turtle population, earning it the nickname "Turtle City." Divers often encounter numerous graceful Hawksbill turtles amidst the vibrant coral gardens and sandy areas.

Is Siaba Besar suitable for new divers?

Yes, Siaba Besar is widely considered suitable for new divers, including those doing check-out dives. Operators frequently utilize the protected, calm side of the bay, which offers accessible shallower depths and manageable conditions.

What is the typical maximum depth at Siaba Besar?

For Open Water certified divers, the typical maximum depth explored aligns with recreational limits. Advanced divers can extend their exploration into slightly deeper areas of the site.

What are the water temperatures like?

Water temperatures at Siaba Besar are consistently warm, generally ranging from 26°C to 29°C (79°F to 84°F) throughout the year. Most divers find a 3mm wetsuit or rash guard comfortable for these conditions.

How are the currents at Siaba Besar?

Currents at Siaba Besar vary; the central bay is typically calm, especially on the protected side. However, during a falling tide, currents can become stronger towards the southern sections of the site. Dive guides manage routes to avoid intense flows.

When is the best time to dive at Siaba Besar?

The dry season, from April to November, is considered the best time for diving. During these months, water clarity is optimal, rainfall is minimal, and conditions are generally more favorable for marine life encounters.

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