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 Onega
Water temperature in the Onega by city today 📍
🎣 Fishing in cities on the Onega
Water temperature forecast in the Onega 📅
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature in the Onega this weekend
Water temperature in the Onega for a month
There is no exact monthly water forecast — it changes slowly. The reference is the climate normal: up to +16° in summer. The monthly normal is below.
Monthly water temperature in the Onega 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +2 | +1 | +3 | +8 | +11 | +11 | +14 | +16 | +12 | +8 | +6 | +3 |
Climate normal (model estimate).
Swimming conditions in the Onega by month
When to swim in the Onega 🏖️
Cities on the Onega 📍
FAQ about water in the Onega ❓
What is the water temperature in the Onega now?
Now +11° — Cold water.
When is water warmest in the Onega?
Warmest in August — up to +16°.
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 Onega on this day
| City | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Konevo | +16° | +14° | +12° | +11° | +13° | +15° | +16° | +14° | +13° | +11° |
| Oksovskiy | +14° | +13° | +11° | +10° | +12° | +14° | +15° | +13° | +11° | +10° |
| Kargopol | +16° | +15° | +13° | +12° | +13° | +15° | +16° | +15° | +13° | +12° |
| Onega | +13° | +12° | +10° | +9° | +10° | +12° | +13° | +12° | +10° | +9° |
Climate normal (model estimate for this date), not a measurement archive.
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Water temperature in the Onega — in detail
Water temperature in the Onega is tracked across 4 cities. The water is now about +11°. The page has a temperature map by city, a daily forecast and a monthly climate normal.