Coldest sea in Indonesia

594 coastal locations in Indonesia ranked by year-round average sea temperature, coldest first. The regional average is 28.9°C. The top of the list is where the water stays cold all year. The contrast list at the bottom shows the warmest coasts for context.

Coldest location

Batawa

Year-round average 10.7°C in Indonesia

Regional average

28.9°C

across all 594 Indonesia coastal locations

Coldest month

August

28.2°C region-wide average

Indonesia monthly average 28.2°C to 29.5°C

Warmest month April 29.5°C
Coldest month August 28.2°C
Annual mean 28.9°C
Months above 20°C 12 of 12

Month by month across Indonesia

Sea temperatures in Indonesia swing from 28.2°C in August to 29.5°C in April on average across every coast we track. That spread of 1°C hides much bigger swings at individual locations.

Want a specific month? Pick one for a dedicated ranking:

Indonesia sea temperature map

Today's pin colours show the latest daily reading at every Indonesia location we track. Cool blues cluster around the high-latitude coasts.

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 coldest locations in Indonesia

Coastal locations across Indonesia sorted by year-round average, coldest first. Honest cold-water swimming country. Click any place for its 30-day chart, monthly profile, and 10-year history.

#	Location	Country	Annual mean	Latest
1	Batawa	Indonesia	10.7°C	6.0°C
2	Lantera	Indonesia	11.4°C	10.3°C
3	Tembol	Indonesia	11.4°C	10.3°C
4	Taman	Indonesia	12.0°C	11.5°C
5	Pandan	Indonesia	13.9°C	11.8°C
6	Bator	Indonesia	14.8°C	21.1°C
7	Fontein	Indonesia	15.6°C	17.3°C
8	Karara	Indonesia	17.5°C	17.4°C
9	Karangsari	Indonesia	27.6°C	27.5°C
10	Ketawang	Indonesia	27.6°C	27.5°C
11	Tawangrejo	Indonesia	27.6°C	27.5°C
12	Tugu	Indonesia	27.6°C	27.5°C
13	Banyudono	Indonesia	27.7°C	27.0°C
14	Karanganyar	Indonesia	27.7°C	27.0°C
15	Karangdowo	Indonesia	27.7°C	27.0°C
16	Kuncen	Indonesia	27.7°C	27.0°C
17	Banjarjo	Indonesia	27.7°C	27.5°C
18	Prigi Jawa Timur	Indonesia	27.7°C	27.5°C
19	Kauman	Indonesia	27.7°C	27.1°C
20	Pandeyan	Indonesia	27.7°C	27.1°C
21	Tegalrejo	Indonesia	27.7°C	27.1°C
22	Temana	Indonesia	27.7°C	27.1°C
23	Yogyakarta	Indonesia	27.7°C	27.1°C
24	Karangrejo	Indonesia	27.8°C	27.2°C
25	Muncar	Indonesia	27.8°C	27.7°C

Show 25 more ▸

26	Tjilauteurem Jawa Barat	Indonesia	27.9°C	27.8°C
27	Ciparay	Indonesia	27.9°C	27.8°C
28	Banjar Anyar	Indonesia	27.9°C	28.2°C
29	Canggu	Indonesia	27.9°C	28.2°C
30	Denpasar	Indonesia	27.9°C	28.2°C
31	Kuta	Indonesia	27.9°C	28.2°C
32	Legian	Indonesia	27.9°C	28.2°C
33	Seminyak	Indonesia	27.9°C	28.2°C
34	Alasmalang	Indonesia	28.0°C	27.6°C
35	Cibenda	Indonesia	28.0°C	28.1°C
36	Pendok	Indonesia	28.0°C	27.7°C
37	Banjar	Indonesia	28.0°C	27.7°C
38	Bola	Indonesia	28.0°C	27.7°C
39	Cipari	Indonesia	28.0°C	27.7°C
40	Congkar	Indonesia	28.0°C	27.7°C
41	Karangbenda	Indonesia	28.0°C	27.7°C
42	Karangjaladri	Indonesia	28.0°C	27.7°C
43	Pananjung	Indonesia	28.0°C	27.7°C
44	Bualu	Indonesia	28.1°C	28.4°C
45	Cilacap (Tjilatjap) Jawa Tengah	Indonesia	28.1°C	27.7°C
46	Gilimanuk	Indonesia	28.1°C	28.1°C
47	Jimbaran	Indonesia	28.1°C	28.4°C
48	Kelanabian	Indonesia	28.1°C	28.4°C
49	Nusa Dua	Indonesia	28.1°C	28.4°C
50	Tanjun Benoa	Indonesia	28.1°C	28.4°C

Warmest 10 in Indonesia for contrast

Same data flipped. Useful if you want to know which Indonesia coasts stay warmest year-round before you commit to a cold-water swim trip.

#	Location	Country	Annual mean
1	Tobelombangi Sulawesi Tengah	Indonesia	30.1°C
2	Teluk Togian Sulawesi Tengah	Indonesia	30.1°C
3	Poso Sulawesi Tengah	Indonesia	30.1°C
4	Nabire Papua	Indonesia	30.1°C
5	Donggala Sulawesi Tengah	Indonesia	30.1°C
6	Kwatisore Papua	Indonesia	30.1°C
7	Pulau-Pulau Moor Papua	Indonesia	30.1°C
8	Sulawesi	Indonesia	30.0°C
9	Moutong Sulawesi Tengah	Indonesia	30.0°C
10	Palu	Indonesia	30.0°C