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Warmest sea temperatures in the world in April

2 destinations share the top spot at 30 °C in April, listed by beach score, starting with Alor Setar. Ranked from 1991–2020 climate normals across 50 destinations.

# Destination Country Sea temp Avg high Rainfall
1 Alor Setar Malaysia 30 °C 31 °C 205 mm
2 Rạch Giá Vietnam 30 °C 33 °C 94 mm
3 Thoothukudi India 30 °C 32 °C 55 mm
4 Phú Quốc Vietnam 30 °C 29 °C 128 mm
5 Sungai Petani Malaysia 30 °C 30 °C 226 mm
6 Kota Kuala Muda Malaysia 30 °C 31 °C 217 mm
7 Jaffna Sri Lanka 30 °C 31 °C 48 mm
8 Taiping Malaysia 30 °C 30 °C 250 mm
9 Bukit Mertajam Malaysia 30 °C 30 °C 241 mm
10 Samut Prakan Thailand 30 °C 33 °C 76 mm
11 Chon Buri Thailand 30 °C 34 °C 94 mm
12 Palopo Indonesia 30 °C 28 °C 479 mm
13 Paya Terubong Malaysia 30 °C 29 °C 228 mm
14 Phu Quoc Vietnam 30 °C 30 °C 129 mm
15 Mawlamyine Myanmar 30 °C 34 °C 70 mm
16 Si Racha Thailand 30 °C 32 °C 90 mm
17 Myeik Myanmar 30 °C 32 °C 152 mm
18 Padang Indonesia 30 °C 29 °C 348 mm
19 Sitiawan Malaysia 30 °C 29 °C 251 mm
20 Kapar Malaysia 30 °C 30 °C 255 mm
21 Shah Alam Malaysia 30 °C 30 °C 205 mm
22 Pontianak Indonesia 30 °C 30 °C 257 mm
23 Kampung Baru Subang Malaysia 30 °C 30 °C 262 mm
24 Kanayannur India 30 °C 31 °C 121 mm
25 Alappuzha India 30 °C 31 °C 162 mm
26 Hat Yai Thailand 30 °C 32 °C 136 mm
27 Thrissur India 30 °C 32 °C 139 mm
28 Probolinggo Indonesia 30 °C 29 °C 149 mm
29 Baubau Indonesia 30 °C 29 °C 262 mm
30 Pasuruan Indonesia 30 °C 29 °C 157 mm
31 Parepare Indonesia 30 °C 29 °C 240 mm
32 Gorontalo Indonesia 30 °C 30 °C 239 mm
33 Langsa Indonesia 30 °C 30 °C 152 mm
34 Surabaya Indonesia 30 °C 30 °C 185 mm
35 Kozhikode India 30 °C 32 °C 130 mm
36 Udupi India 30 °C 33 °C 43 mm
37 Mangaluru India 30 °C 32 °C 49 mm
38 Victoria Seychelles 30 °C 28 °C 111 mm
39 Male Maldives 30 °C 29 °C 114 mm
40 Bengkulu Indonesia 30 °C 29 °C 256 mm
41 Iskandar Puteri Malaysia 30 °C 29 °C 227 mm
42 Jurong Town Singapore 30 °C 29 °C 251 mm
43 Plumbon Indonesia 30 °C 29 °C 226 mm
44 Cirebon Indonesia 30 °C 29 °C 210 mm
45 Tegal Indonesia 30 °C 29 °C 291 mm
46 Lhokseumawe Indonesia 30 °C 29 °C 176 mm
47 Sepang Malaysia 30 °C 30 °C 236 mm
48 Muar Malaysia 30 °C 30 °C 216 mm
49 Perbaungan Indonesia 30 °C 30 °C 217 mm
50 Tanjungbalai Indonesia 30 °C 30 °C 246 mm

Only destinations with a published page for that month are ranked. The ranking is ours; the underlying values are reproduced from the source.

Data sources and method

Normal period
1991–2020
Dataset version
era5-1991-2020-scores1.1
Last processed

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: ranking order, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.