Bunaken Island Beach — Sea temperature now
Coral-wall snorkelling beach off Manado.
Very warm water with a light chop and a light breeze — great swimming conditions.
Location
Bunaken Island Beach on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
Monthly sea temperature averages
Typical year-round water temperature, based on regional climatology.
Best time to swim in Bunaken Island Beach
The sea in Bunaken Island Beach peaks in January, when the water averages around 29°C.
The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.
On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
The coldest month is typically June at around 28°C, when cold-water swimmers dominate the coast.
Bunaken Island Beach sits in the Southern Hemisphere, so the warmest sea coincides with the December–February summer and the coolest with July–August.
Bunaken Island Beach sea temperature history
Long-term climatology for Bunaken Island Beach shows an annual mean sea temperature of 29°C, ranging from 28°C in winter to 29°C at the summer peak.
The seasonal swing is roughly 1°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Bunaken Island Beach, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Bunaken Island Beach sea temperature: frequently asked questions
What is the warmest month to swim in Bunaken Island Beach?
January is the warmest month in Bunaken Island Beach, when the sea averages about 29°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Bunaken Island Beach?
The coldest month in Bunaken Island Beach is typically June, when the water averages around 28°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Bunaken Island Beach without a wetsuit?
The main swimming season in Bunaken Island Beach runs from January – December — about 12 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in Bunaken Island Beach?
Bunaken Island Beach stays warm year-round, so most swimmers never need a wetsuit — a rash guard is usually enough for sun and wildlife protection.
What is the average sea temperature in Bunaken Island Beach?
The long-term annual mean sea temperature in Bunaken Island Beach is about 29°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Bunaken Island Beach?
The live reading at the top of this page shows the current sea temperature in Bunaken Island Beach, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
Best swim months: Jan – Feb – Mar – Apr – May – Jun – Jul – Aug – Sep – Oct – Nov – Dec
| Month | Sea | Comfort |
|---|---|---|
| Jan ⭐ | 29°C | Hot |
| Feb | 29°C | Hot |
| Mar | 29°C | Hot |
| Apr | 29°C | Hot |
| May | 29°C | Hot |
| Jun | 28°C | Hot |
| Jul | 28°C | Hot |
| Aug | 28°C | Hot |
| Sep | 28°C | Hot |
| Oct | 29°C | Hot |
| Nov | 29°C | Hot |
| Dec | 29°C | Hot |