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 the week 📍
| City | for the week | 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 the week 📅
Tuesday
8 September
+10°
Wednesday
9 September
+10°
Thursday
10 September
+10°
Friday
11 September
+10°
Saturday
12 September
+10°
Sunday
13 September
+11°
Monday
14 September
+11°
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature chart in the Tosna for the week 📈
+10°
minimum for the week
+11°
maximum for the week
↗
rising by +1°
🏊
For the week: no warmer than +11° — too cold for swimming.
This weekend 🏖️
Saturday, 12 September · water +10° · cold water
Sunday, 13 September · water +11° · cold water
Water questions for the week ❓
What is the water in the Tosna for the week?
From +10° to +11° by the climate model; trend — rising by +1°.
Will the water warm up by the weekend?
On Saturday about +10°.
Can you swim in the Tosna for the week?
no warmer than +11° — too cold for swimming.
Water temperature forecast in the Tosna for the week. 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.