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.
Water temperature map of the Tosna
Water temperature in the Tosna by city today 📍
| City | Now | 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 📅
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature in the Tosna this weekend
Water temperature in the Tosna for a month
There is no exact monthly water forecast — it changes slowly. The reference is the climate normal: up to +15° in summer. The monthly normal is below.
Monthly water temperature in the Tosna 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ❄ | ❄ | +1 | +6 | +10 | +11 | +13 | +15 | +11 | +7 | +5 | +2 |
Climate normal (model estimate).
Swimming conditions in the Tosna by month
When to swim in the Tosna 🏖️
Cities on the Tosna 📍
FAQ about water in the Tosna ❓
What is the water temperature in the Tosna now?
Now +10° — Cold water.
When is water warmest in the Tosna?
Warmest in August — up to +15°.
Where does the water temperature data come from?
A water temperature model (by latitude, longitude and day of year), by cities.
Water temperature archive in the Tosna on this day
| City | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Nikolskoe | +15° | +13° | +12° | +12° | +13° | +15° | +15° | +13° | +12° | +11° |
| Otradnoe | +14° | +12° | +10° | +10° | +12° | +14° | +14° | +12° | +11° | +10° |
| Ulyanovka | +15° | +13° | +11° | +11° | +13° | +15° | +15° | +13° | +12° | +11° |
| Tosno | +14° | +12° | +11° | +11° | +12° | +14° | +14° | +12° | +11° | +10° |
Climate normal (model estimate for this date), not a measurement archive.
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Water temperature in the Tosna — in detail
Water temperature in the Tosna is tracked across 4 cities. The water is now about +10°. The page has a temperature map by city, a daily forecast and a monthly climate normal.