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 Iskr
Water temperature in the Iskr by city today 📍
| City | Now | Swimming |
|---|---|---|
| Sofiya | +20° | Comfortable for swimming |
| Svoge | +20° | Comfortable for swimming |
| Iskar | +20° | Comfortable for swimming |
| Koynare | +21° | Comfortable for swimming |
| Cherven-Bryag | +19° | Comfortable for swimming |
| Mezdra | +19° | Comfortable for swimming |
| Roman | +20° | Comfortable for swimming |
| Corabia | +21° | Comfortable for swimming |
🎣 Fishing in cities on the Iskr
Water temperature forecast in the Iskr 📅
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature in the Iskr this weekend
Water temperature in the Iskr for a month
There is no exact monthly water forecast — it changes slowly. The reference is the climate normal: up to +21° in summer. The monthly normal is below.
Monthly water temperature in the Iskr 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +7 | +9 | +9 | +12 | +18 | +21 | +20 | +21 | +21 | +16 | +12 | +11 |
Climate normal (model estimate).
Swimming conditions in the Iskr by month
When to swim in the Iskr 🏖️
Cities on the Iskr 📍
FAQ about water in the Iskr ❓
What is the water temperature in the Iskr now?
Now +20° — Comfortable for swimming.
Can you swim in the Iskr?
Comfortable season — from May to September.
When is water warmest in the Iskr?
Warmest in August — up to +21°.
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 Iskr on this day
| City | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Sofiya | +21° | +21° | +20° | +20° | +20° | +20° | +21° | +21° | +20° | +20° |
| Svoge | +21° | +21° | +21° | +20° | +20° | +21° | +21° | +21° | +21° | +20° |
| Iskar | +21° | +20° | +20° | +19° | +20° | +20° | +21° | +21° | +20° | +20° |
| Koynare | +22° | +22° | +21° | +21° | +21° | +21° | +22° | +22° | +21° | +21° |
| Cherven-Bryag | +21° | +20° | +20° | +19° | +19° | +20° | +20° | +20° | +20° | +19° |
Climate normal (model estimate for this date), not a measurement archive.
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Water temperature in the Iskr — in detail
Water temperature in the Iskr is tracked across 8 cities. The water is now about +20°. The page has a temperature map by city, a daily forecast and a monthly climate normal.