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Warmest sea in Indonesia in December

594 coastal locations in Indonesia ranked by their typical December sea temperature. Region-wide average in December: 29.1°C. The top of the list is where to find the warmest swimming this month.

Warmest in December

Sungai Kaibus

30.5°C December mean in Indonesia

Regional December average

29.1°C

across all 594 coastal locations in Indonesia

Vs annual mean

+0.2°C

above the year-round regional average

What the Indonesia sea feels like in December

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Indonesia monthly average 28.2°C to 29.5°C
J
F
M
A
M
J
J
A
S
O
N
D
  • Warmest month April 29.5°C
  • Coldest month August 28.2°C
  • Annual mean 28.9°C
  • Months above 20°C 12 of 12

Where December fits in the year

December sits inside the regional pattern shown on the left. Pick a different month to see how the ranking shifts.

All twelve Indonesia month rankings:

Indonesia sea temperature map (live)

The map shows today's latest reading at every Indonesia location. The list below is based on the typical December mean, useful for trip planning weeks or months ahead.

Zoom in to see individual locations. Click a pin for water temperatures. View list →
°C -2 0 1 3 5 7 9 11 13 15 17 19 21 24 27 30 35

Top 50 warmest Indonesia locations in December

Sorted by the typical December mean built from a decade of daily readings at each location. Click any place for its 30-day chart, monthly profile, and full 10-year history.

# Location December mean
1 Sungai Kaibus West Papua 30.5°C
2 Sungai Karabra West Papua 30.4°C
3 Nabire Papua 30.3°C
4 Pulau Kobalin Papua Barat 30.3°C
5 Pulau-Pulau Moor Papua 30.2°C
6 Kwatisore Papua 30.2°C
7 Donggala Sulawesi Tengah 30.1°C
8 Sungai Kais Papua Barat 30.1°C
9 Poso Sulawesi Tengah 30.1°C
10 Yamdena 30.1°C
11 Momo Sulawesi Tengah 30.1°C
12 Kolobolon 30.1°C
13 Lasusua 30.1°C
14 Seroei Papua 30.1°C
15 Lingkobu Sulawesi Tengah 30.1°C
16 Tobelombangi Sulawesi Tengah 30.1°C
17 Bungku Sulawesi Tengah 30.1°C
18 Kintong Sulawesi Tengah 30.1°C
19 Yef Yus Reef Papua Barat 30.1°C
20 Teluk Solat Maluku 30.0°C
21 Tepa Road Maluku 30.0°C
22 Wassior Papua Barat 30.0°C
23 Yende Papua Barat 30.0°C
24 Palu 30.0°C
25 Saumlaki Maluku 30.0°C
Show 25 more ▸
26 Sulawesi 30.0°C
27 Pulau-Pulau Ayu Papua Barat 30.0°C
28 Teluk Togian Sulawesi Tengah 30.0°C
29 Yenmanu Papua 30.0°C
30 Kolaka Sulawesi Tenggara 30.0°C
31 Salabangka Sulawesi Tengah 30.0°C
32 Baa 30.0°C
33 Fakfak Papua Barat 30.0°C
34 Kokas Papua Barat 30.0°C
35 Manokwari 30.0°C
36 Mios Wundi Papua 30.0°C
37 Oebou 30.0°C
38 Pilau Liran Maluku 30.0°C
39 Pulau Baleara Sulawesi Tenggara 30.0°C
40 Pulau Galla Besar Sulawesi Tenggara 30.0°C
41 Tasikona 30.0°C
42 Korido Papua 29.9°C
43 Pulau Unaginim Papua Barat 29.9°C
44 Pulau Yef Doif Papua Barat 29.9°C
45 Sorong 29.9°C
46 Tanjung Sorong Papua Barat 29.9°C
47 Syeri Papua Barat 29.9°C
48 Insrom 29.9°C
49 Bandanaira Maluku 29.9°C
50 Korim Papua 29.9°C

Coldest 10 in Indonesia in December

Same data the other way. Helpful if you want to know which Indonesia coasts to avoid for swimming in December.

# Location December mean
1 Bator 5.7°C
2 Batawa 6.0°C
3 Fontein 6.9°C
4 Taman 7.8°C
5 Lantera 8.0°C
6 Tembol 8.0°C
7 Pandan 9.0°C
8 Karara 16.1°C
9 Pulau Laut Kalimanta Selatan 27.6°C
10 Impul Passage Kepulauan Riau 28.1°C

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