- Best months for diving: April to November
- Wet season: December to March
- Water temperature: 27-30°C (80-86°F)
Overview of Derawan Liveaboard Conditions
The Derawan archipelago, comprising Maratua, Kakaban, and Sangalaki, is a prime destination for liveaboard diving. Understanding the monthly weather and sea conditions is crucial for planning a successful diving trip. This guide outlines what to expect throughout the year, focusing on temperature, rainfall, wind, and sea conditions.
Monthly Breakdown of Weather Conditions
January
January marks the peak of the wet season in Derawan. Expect high humidity and rain, especially in the afternoons. Sea conditions can be choppy, making some dive sites less accessible.
- Average Temperature: 27-29°C (81-84°F)
- Rainfall: 250 mm (9.8 inches)
- Sea Conditions: Moderate to rough
February
February continues the wet season trend, with similar weather patterns as January. However, there may be breaks of sunshine. Dive conditions fluctuate, and divers should be prepared for potential cancellations.
- Average Temperature: 27-29°C (81-84°F)
- Rainfall: 230 mm (9 inches)
- Sea Conditions: Moderate
March
March sees a gradual transition toward the dry season. Rainfall decreases, but occasional storms can still occur. The sea conditions may improve, but it’s wise to check local forecasts before diving.
- Average Temperature: 27-30°C (80-86°F)
- Rainfall: 190 mm (7.5 inches)
- Sea Conditions: Moderate
April
April marks the beginning of the dry season, providing excellent diving conditions. The weather is warm, and rainfall is minimal. Visibility improves significantly, making this a popular month for liveaboard trips.
- Average Temperature: 28-30°C (82-86°F)
- Rainfall: 100 mm (4 inches)
- Sea Conditions: Calm
May
May is one of the best months for diving in Derawan. Clear skies and warm waters create ideal conditions. Manta rays are frequently spotted, making this a prime time for enthusiasts.
- Average Temperature: 28-30°C (82-86°F)
- Rainfall: 70 mm (2.8 inches)
- Sea Conditions: Very calm
June
June continues the trend of excellent weather. Visibility remains high, and the sea is usually calm. This month is optimal for divers looking to explore the vibrant marine life.
- Average Temperature: 28-30°C (82-86°F)
- Rainfall: 50 mm (2 inches)
- Sea Conditions: Very calm
July
July is another peak month for diving. The weather is consistently good, with comfortable temperatures and low rainfall. Dive sites around Maratua and Kakaban are particularly accessible.
- Average Temperature: 28-30°C (82-86°F)
- Rainfall: 30 mm (1.2 inches)
- Sea Conditions: Calm
August
August remains a fantastic month for divers. The warm water temperatures and minimal rainfall promote excellent underwater visibility. Many liveaboard operators offer special packages during this time.
- Average Temperature: 28-30°C (82-86°F)
- Rainfall: 40 mm (1.6 inches)
- Sea Conditions: Calm
September
September is still part of the dry season, with warm weather and calm seas. This month is ideal for spotting turtles and other marine life. Divers can expect great conditions.
- Average Temperature: 28-30°C (82-86°F)
- Rainfall: 60 mm (2.4 inches)
- Sea Conditions: Calm
October
October marks the transition back to the wet season. While conditions are still favorable for diving, occasional rain showers may occur. This month can offer good visibility and opportunities to see large pelagic species.
- Average Temperature: 28-30°C (82-86°F)
- Rainfall: 140 mm (5.5 inches)
- Sea Conditions: Moderate
November
November typically sees the onset of the wet season, but conditions can still be good for diving, particularly in early November. Expect higher humidity and occasional rain showers.
- Average Temperature: 28-30°C (82-86°F)
- Rainfall: 180 mm (7 inches)
- Sea Conditions: Moderate
December
December is fully in the wet season, with frequent rainfall and rougher sea conditions. Diving is still possible, but divers should be prepared for cancellations and changes in itineraries due to weather.
- Average Temperature: 27-29°C (81-84°F)
- Rainfall: 300 mm (11.8 inches)
- Sea Conditions: Rough
Conclusion
Understanding the weather and sea conditions month by month is essential for planning a successful liveaboard diving trip in the Derawan archipelago. The best conditions are typically found from April to November, making these months the prime time for divers. For current rates and liveaboard options, see current rates.
Adapting your plans according to the weather patterns can enhance your experience, allowing you to fully enjoy the rich marine biodiversity that Derawan offers.
Planning specifics? See read the full guide or book Derawan Liveaboard | Derawan Liveaboard.