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 Lake Ilmen
Water temperature in Lake Ilmen by city today 📍
| City | Now | Swimming |
|---|---|---|
| Velikiy Novgorod | +18° | Cool for swimming |
🎣 Fishing in cities on Lake Ilmen
Water temperature forecast in Lake Ilmen 📅
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature in Lake Ilmen this weekend
Water temperature in Lake Ilmen for a month
There is no exact monthly water forecast — it changes slowly. The reference is the climate normal: up to +19° in summer. The monthly normal is below.
Monthly water temperature in Lake Ilmen 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ❄ | ❄ | +2 | +6 | +14 | +19 | +18 | +19 | +19 | +12 | +6 | +3 |
Climate normal (model estimate).
Swimming conditions in Lake Ilmen by month
When to swim in Lake Ilmen 🏖️
Cities on Lake Ilmen 📍
FAQ about water in Lake Ilmen ❓
What is the water temperature in Lake Ilmen now?
Now +18° — Cool for swimming.
Can you swim in Lake Ilmen?
Comfortable season — from June to September.
When is water warmest in Lake Ilmen?
Warmest in August — up to +19°.
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 Lake Ilmen on this day
| City | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Velikiy Novgorod | +16° | +14° | +16° | +19° | +20° | +19° | +16° | +14° | +15° | +18° |
Climate normal (model estimate for this date), not a measurement archive.
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Water temperature in Lake Ilmen — in detail
Water temperature in Lake Ilmen is tracked across 1 cities. The water is now about +18°. The page has a temperature map by city, a daily forecast and a monthly climate normal.