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Warmest sea in Indonesia in July

594 coastal locations in Indonesia ranked by their typical July sea temperature. Region-wide average in July: 28.5°C. The top of the list is where to find the warmest swimming this month.

Warmest in July

Teluk Langsa

30.4°C July mean in Indonesia

Regional July average

28.5°C

across all 594 coastal locations in Indonesia

Vs annual mean

-0.4°C

below the year-round regional average

What the Indonesia sea feels like in July

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
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A
S
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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 July fits in the year

July 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 July 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 July

Sorted by the typical July 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 July mean
1 Teluk Langsa Aceh 30.4°C
2 Idi Aceh 30.4°C
3 Belawan 30.4°C
4 Tanjung Medang Riau 30.3°C
5 Lancang 30.3°C
6 Lhokseumawe 30.3°C
7 Medan 30.3°C
8 Percut 30.3°C
9 Tanjung Parit Riau 30.2°C
10 Tanjung Sinaboi Kepulauan Riau 30.2°C
11 Dumai 30.2°C
12 Simanari Sumatra Utara 30.1°C
13 Gunungsitoli Sumatera Utara 30.1°C
14 Teluk Dalam Sumatera Utara 30.1°C
15 Barus Sumatra Utara 30.1°C
16 Natal Sumatera Utara 30.1°C
17 Pelabuhan Kualatanjung Sumatera Utara 30.1°C
18 Pulau Telo North Sumatra 30.1°C
19 Teluk Sinabang Aceh 30.1°C
20 Singkel Aceh 30.1°C
21 Sungai Paloh Kalimantan Barat 30.1°C
22 Tanjungtiram Sumatra Utara 30.1°C
23 Sigli Aceh 30.1°C
24 Tobelombangi Sulawesi Tengah 30.1°C
25 Sinabang 30.1°C
Show 25 more ▸
26 Tapaktuan Aceh 30.1°C
27 Paloh 30.1°C
28 Pulau Jemur Riau 30.0°C
29 Pemangkat Kalimantan Barat 30.0°C
30 Teluk Togian Sulawesi Tengah 30.0°C
31 Teluk Nibung 30.0°C
32 Poso Sulawesi Tengah 30.0°C
33 Sibolga 30.0°C
34 Pulau Temaju Kalimantan Barat 30.0°C
35 Malu Kepulauan Riau 29.9°C
36 Sulawesi 29.9°C
37 Iyu Kecil (Brothers Light) Kepulauan Riau 29.9°C
38 Pulau Kepalajerih Kepulauan Riau 29.9°C
39 Pulau Sambu Kepulauan Riau 29.9°C
40 Sekupang Kepulauan Riau 29.9°C
41 Sikabaluan 29.9°C
42 Teluk Siberut Sumatera Barat 29.9°C
43 Donggala Sulawesi Tengah 29.9°C
44 Meulaboh 29.9°C
45 Padang-A Sumatera Barat 29.9°C
46 Padang-B West Sumatra 29.9°C
47 Pelabuhan Serasan Kepulauan Riau 29.9°C
48 Teluk Bayur (Emma Haven) Sumatera Barat 29.9°C
49 Tiku 29.9°C
50 Nabire Papua 29.9°C

Coldest 10 in Indonesia in July

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

# Location July mean
1 Taman 18.2°C
2 Lantera 18.8°C
3 Tembol 18.8°C
4 Karara 20.0°C
5 Batawa 21.1°C
6 Pandan 23.3°C
7 Ketawang 25.8°C
8 Karangsari 25.8°C
9 Tawangrejo 25.8°C
10 Tugu 25.9°C

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