Swimming in Dumai in december 2026: Average sea temperature in december and tide times in december 2026
Average sea temperature in Dumai in december 2026.
In december, according to seasonal norms, the sea temperature in Dumai is:
Minimum: 83°F
Average: 85°F
Maximum: 87°F
Other useful seasonal weather averages in december:
- Outside temperature: 77°F to 88°F
- Most common weather: "Moderate rain at times"
- The wind blows at 15.5mph
- It rains a total of 9.4in, over 15 day(s).
Should we swim in Dumai in december?
Yes! The water temperature in Dumai in december is ideal
In december, swimming is ideal on the beaches around Dumai! With water reaching 87°F at most and 85°F on average, spending time in the water is very pleasant.
Note also that in december, the climate is tolerable with an average outside temperature of 82°F, 9.4in of precipitation (over 15 days) and 92.18 % humidity.
Water and normal seasonal temperatures in Dumai in december
| December | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 87°F | ||
| Average outside temperature | 83°F | ||
| Maximum outside temperature | 88°F | ||
| Minimum outside temperature | 77°F | ||
| Wind speed | 5mph | ||
| Wind temperature | 77°F | ||
| Precipitation | 9.4in | ||
| Number of days of rain | 15 jour(s) (47%) | ||
| Humidity | 93% | ||
| Visibility in kilometers | 8.54km | ||
| Cloud cover | 51% | ||
| Our opinion | ideal swimming |
Chart of the tides in december 2026
Tide times in december 2026 in Dumai
Swim elsewhere on the island of Sumatra in december
| City | Average T° | Min. T° | Max. T° | Our opinion | Banda Aceh in december | 85°F | 86°F | ideal swimming | Bandar Lampung in december | 85°F | 87°F | ideal swimming | Bengkulu in december | 85°F | 86°F | ideal swimming | Gunungsitoli (Pulau Nias) in december | 85°F | 87°F | ideal swimming | Padang City in december | 85°F | 87°F | ideal swimming | Batam in december | 85°F | 86°F | ideal swimming |
Swim on the island of Sumatra in december: sea temperature by city