This is a climate-model estimate, not a measurement: we have no measured water temperature for rivers, lakes and reservoirs yet. Real measurements are available for seas only.
Cool for swimming. Now in the Oster +17°. Swimming season — August and September.
Water temperature map of the Oster
ColderWarmer
Water temperature in the Oster by city for 3 days 📍
| City | for 3 days | Swimming |
|---|---|---|
| Roslavl' | +17° | Cool for swimming |
| Shumyachi | +17° | Cool for swimming |
| Oster | +17° | Cool for swimming |
🎣 Fishing in cities on the Oster
Water temperature forecast in the Oster for 3 days 📅
Sunday
23 August
+17°
Monday
24 August
+17°
Tuesday
25 August
+17°
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature chart in the Oster for 3 days 📈
+17°
minimum for 3 days
+17°
maximum for 3 days
→
steady
🏊
For 3 days: up to +17° — for hardy swimmers.
Water questions for 3 days ❓
What is the water in the Oster for 3 days?
From +17° to +17° by the climate model; trend — steady.
Will the water warm up by the weekend?
On Saturday about +16°.
Can you swim in the Oster for 3 days?
up to +17° — for hardy swimmers.
Water temperature forecast in the Oster for 3 days. Daily values and by-city temperatures for this horizon to plan a trip and a swim. Full reference data — map, monthly climate normal, yearly archive and swimming season — is on the main page.