Halmahera Sea Water Temperature Today & Regional Overview
We find every place where you can swim and show you the water temperature there today and throughout the year.
Current Water Temperature
The water temperature in the Halmahera Sea today ranges from 28.6°C (Bobong, Indonesia) to 29.7°C (Ternate, Indonesia).
As of today, the minimum water temperature in the Halmahera Sea is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Sea Temperature Trends
Over the past month, the water temperature in the Halmahera Sea has remained almost unchanged. In general, the sea water temperature remains within the statistical range for this time of year.
Water Temperature and Swimming Conditions Throughout the Year
| Month | Min | Max |
|---|---|---|
| January | 27°C | 31°C |
| February | 27°C | 31°C |
| March | 27°C | 31°C |
| April | 28°C | 32°C |
| May | 28°C | 32°C |
| June | 26°C | 32°C |
| July | 26°C | 31°C |
| August | 26°C | 31°C |
| September | 26°C | 31°C |
| October | 26°C | 32°C |
| November | 27°C | 32°C |
| December | 27°C | 32°C |
The Halmahera Sea, located in eastern Indonesia, maintains warm tropical water temperatures year‑round. Sea surface temperatures typically fluctuate between about 26°C in the coolest months and up to around 30°C in the warmest months, with average values commonly sitting between 27°C and 29°C. Seasonal variation is modest: the coolest period is usually during June to August when winds and regional currents can bring slightly cooler water, while the warmest phase occurs roughly from December through March when surface heating and calmer conditions raise temperatures toward the upper end of the range. Localized factors such as currents, depth, coastal upwelling, and proximity to river mouths can cause small differences from these general figures.
Swimming Conditions
Swimming in the Halmahera Sea is generally possible and often pleasant because of the warm water temperatures, and many coastal and island areas support recreational swimming, snorkeling and diving. However, access and safety depend on location and conditions: some beaches and bays are sheltered and suitable for casual swimmers, while open channels and straits may have strong currents, tides, or waves that make swimming hazardous. Marine hazards such as coral, sharp rocks, and occasional jellyfish, together with limited lifeguard services in remote areas, mean swimmers should exercise caution, use local guidance, and enter waters where conditions are known to be safe. Protected marine parks may also impose restrictions to conserve coral and fish, so checking local regulations and weather forecasts is advisable before swimming.