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.
Cold water. Now in the Tosna +10°.
Water temperature map of the Tosna
ColderWarmer
Water temperature in the Tosna by city for 3 days 📍
| City | for 3 days | Swimming |
|---|---|---|
| Nikolskoe | +11° | Cold water |
| Otradnoe | +10° | Cold water |
| Ulyanovka | +11° | Cold water |
| Tosno | +10° | Cold water |
🎣 Fishing in cities on the Tosna
Water temperature forecast in the Tosna for 3 days 📅
Wednesday
9 September
+10°
Thursday
10 September
+10°
Friday
11 September
+10°
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature chart in the Tosna for 3 days 📈
+10°
minimum for 3 days
+10°
maximum for 3 days
→
steady
🏊
For 3 days: no warmer than +10° — too cold for swimming.
Water questions for 3 days ❓
What is the water in the Tosna for 3 days?
From +10° to +10° by the climate model; trend — steady.
Will the water warm up by the weekend?
On Saturday about +10°.
Can you swim in the Tosna for 3 days?
no warmer than +10° — too cold for swimming.
Water temperature forecast in the Tosna 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.