Comfortable for swimming. Now in the Sea of Japan +22°. Swimming season — from May to September.
Water temperature map of the Sea of Japan
ColderWarmer
Water temperature in the Sea of Japan by city today 📍
+27°
Tokyo
+17°
Uglegorsk
+23°
Volchanets
+22°
Vrangel
+23°
Zarubino
+24°
Knevichi
+24°
Kraskino
+24°
Novyy
+18°
Plastun
+22°
Preobrazhenie
+20°
Rudnaya Pristan
+18°
Svetlaya
| City | Now | Swimming |
|---|---|---|
| Tokyo | +27° | Warm water |
| Uglegorsk | +17° | Cool for swimming |
| Volchanets | +23° | Comfortable for swimming |
| Vrangel | +22° | Comfortable for swimming |
| Zarubino | +23° | Warm water |
| Knevichi | +24° | Warm water |
| Kraskino | +24° | Warm water |
| Novyy | +24° | Warm water |
| Plastun | +18° | Comfortable for swimming |
| Preobrazhenie | +22° | Comfortable for swimming |
| Rudnaya Pristan | +20° | Comfortable for swimming |
| Svetlaya | +18° | Cool for swimming |
| Slavyanka | +23° | Warm water |
| Smolyaninovo | +24° | Warm water |
| Tavrichanka | +24° | Warm water |
| Terney | +18° | Cool for swimming |
| Shkotovo | +24° | Warm water |
| Shtykovo | +24° | Warm water |
| Boshnyakovo | +17° | Cool for swimming |
| Krasnogorsk | +15° | Cool for swimming |
| Mgachi | +18° | Comfortable for swimming |
| Shebunino | +17° | Cool for swimming |
| Zavety Ilicha | +17° | Cool for swimming |
| Mayskiy | +17° | Cool for swimming |
| Toyama | +28° | Warm water |
| Fukuoka | +27° | Warm water |
| Niigata | +27° | Warm water |
| Kitakyusyu | +29° | Warm water |
| Ulsan | +26° | Warm water |
| Sukhodol | +23° | Warm water |
| Primorskiy | +23° | Warm water |
| Kamenka | +22° | Comfortable for swimming |
| Popova | +24° | Warm water |
| Oktyabrskiy | +22° | Comfortable for swimming |
| Romanovka | +23° | Warm water |
| Lososina | +22° | Comfortable for swimming |
| Artem | +24° | Warm water |
| Bol'soj Kamen' | +23° | Warm water |
| Vladivostok | +23° | Warm water |
| Vladimiro-Aleksandrovskoe | +22° | Comfortable for swimming |
🎣 Fishing in cities on the Sea of Japan
Water temperature forecast in the Sea of Japan 📅
Tuesday
8 September
+21°
Wednesday
9 September
+21°
Thursday
10 September
+21°
Friday
11 September
+21°
Saturday
12 September
+21°
Sunday
13 September
+21°
Monday
14 September
+21°
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature in the Sea of Japan this weekend
Saturday, 12 September · water +21° · comfortable for swimming
Sunday, 13 September · water +21° · comfortable for swimming
Water temperature in the Sea of Japan for a month
There is no exact monthly water forecast — it changes slowly. The reference is the climate normal: up to +27° in summer. The monthly normal is below.
Monthly water temperature in the Sea of Japan 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +10 | +8 | +11 | +17 | +20 | +21 | +25 | +27 | +22 | +16 | +14 | +11 |
Climate normal (model estimate).
Swimming conditions in the Sea of Japan by month
Jan+10°Cold, only for the hardy.
Feb+8°Cold, only for the hardy.
Mar+11°Cold, only for the hardy.
Apr+17°Cool for swimming.
May+20°Swimming season — comfortable.
Jun+21°Swimming season — comfortable.
Jul+25°Swimming season — comfortable.
Aug+27°Swimming season — comfortable.
Sep+22°Swimming season — comfortable.
Oct+16°Cool for swimming.
Nov+14°Cool for swimming.
Dec+11°Cold, only for the hardy.
When to swim in the Sea of Japan 🏖️
🏖️
Comfortable to swim in from May to September, when the water warms to +17° and above.
Cities on the Sea of Japan 📍
TokyoUglegorskVolchanetsVrangelZarubinoKnevichiKraskinoNovyyPlastunPreobrazhenieRudnaya PristanSvetlayaSlavyankaSmolyaninovoTavrichankaTerneyShkotovoShtykovoBoshnyakovoKrasnogorskMgachiShebuninoZavety IlichaMayskiyToyamaFukuokaNiigataKitakyusyuUlsanSukhodolPrimorskiyKamenkaPopovaOktyabrskiyRomanovkaLososinaArtemBol'soj Kamen'VladivostokVladimiro-Aleksandrovskoe
FAQ about water in the Sea of Japan ❓
What is the water temperature in the Sea of Japan now?
Now +22° — Comfortable for swimming.
Can you swim in the Sea of Japan?
Comfortable season — from May to September.
When is water warmest in the Sea of Japan?
Warmest in August — up to +27°.
Where does the water temperature data come from?
A water temperature model (by latitude, longitude and day of year) and SST measurements, by cities.
Water temperature archive in the Sea of Japan on this day
| City | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Tokyo | +31° | +30° | +27° | +26° | +28° | +30° | +32° | +30° | +28° | +26° |
| Uglegorsk | +27° | +26° | +23° | +22° | +23° | +26° | +27° | +26° | +24° | +22° |
| Volchanets | +28° | +26° | +24° | +22° | +24° | +26° | +28° | +26° | +24° | +23° |
| Vrangel | +28° | +27° | +24° | +23° | +24° | +27° | +28° | +27° | +25° | +23° |
| Zarubino | +29° | +27° | +25° | +23° | +25° | +27° | +29° | +27° | +25° | +23° |
Climate normal (model estimate for this date), not a measurement archive.
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Water temperature in the Sea of Japan — in detail
Water temperature in the Sea of Japan is tracked across 81 cities. The water is now about +22°. The page has a temperature map by city, a daily forecast and a monthly climate normal.