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 Tiber
Water temperature in the Tiber by city today 📍
| City | Now | Swimming |
|---|---|---|
| Fiumicino | +19° | Comfortable for swimming |
| Leonardo da Vinchi | +19° | Comfortable for swimming |
| Deruta | +19° | Comfortable for swimming |
| Angyari | +18° | Cool for swimming |
| Monterotondo | +19° | Comfortable for swimming |
| Natstsano | +18° | Comfortable for swimming |
| San-Dzhustino | +18° | Cool for swimming |
| Perugia | +18° | Comfortable for swimming |
| Todi | +19° | Comfortable for swimming |
| Tordzhano | +19° | Comfortable for swimming |
| Riano | +19° | Comfortable for swimming |
| Umbertide | +19° | Comfortable for swimming |
| Kantalupo-in-Sabina | +19° | Comfortable for swimming |
| Peve-Santo-Stefano | +19° | Comfortable for swimming |
| Kastel-Sant'Andzhelo | +19° | Comfortable for swimming |
| Chitta-di-Kastello | +18° | Cool for swimming |
| Sansepolkro | +18° | Cool for swimming |
| Malyano-Sabina | +18° | Comfortable for swimming |
| Attilyano | +19° | Comfortable for swimming |
| Sant'Oreste | +18° | Comfortable for swimming |
| Guardeya | +18° | Cool for swimming |
| Bassano-in-Teverina | +19° | Comfortable for swimming |
| Bomartso | +19° | Comfortable for swimming |
| Vazanello | +18° | Comfortable for swimming |
| Stimilyano | +18° | Comfortable for swimming |
| Chivitella-San-Paolo | +19° | Comfortable for swimming |
| Forano | +18° | Comfortable for swimming |
| Kastilone-in-Teverina | +18° | Comfortable for swimming |
| Orte | +19° | Comfortable for swimming |
| Rome | +19° | Comfortable for swimming |
🎣 Fishing in cities on the Tiber
Water temperature forecast in the Tiber 📅
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature in the Tiber this weekend
Water temperature in the Tiber for a month
There is no exact monthly water forecast — it changes slowly. The reference is the climate normal: up to +23° in summer. The monthly normal is below.
Monthly water temperature in the Tiber 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +9 | +9 | +10 | +14 | +18 | +19 | +21 | +23 | +20 | +15 | +13 | +11 |
Climate normal (model estimate).
Swimming conditions in the Tiber by month
When to swim in the Tiber 🏖️
Cities on the Tiber 📍
FAQ about water in the Tiber ❓
What is the water temperature in the Tiber now?
Now +18° — Comfortable for swimming.
Can you swim in the Tiber?
Comfortable season — from May to September.
When is water warmest in the Tiber?
Warmest in August — up to +23°.
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 Tiber on this day
| City | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Fiumicino | +23° | +21° | +19° | +20° | +21° | +23° | +23° | +21° | +19° | +19° |
| Leonardo da Vinchi | +22° | +20° | +19° | +19° | +21° | +23° | +22° | +20° | +19° | +19° |
| Deruta | +22° | +20° | +19° | +19° | +21° | +23° | +23° | +20° | +19° | +19° |
| Angyari | +21° | +19° | +18° | +18° | +20° | +22° | +21° | +19° | +18° | +18° |
| Monterotondo | +22° | +20° | +19° | +19° | +21° | +23° | +23° | +20° | +19° | +19° |
Climate normal (model estimate for this date), not a measurement archive.
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Water temperature in the Tiber — in detail
Water temperature in the Tiber is tracked across 30 cities. The water is now about +18°. The page has a temperature map by city, a daily forecast and a monthly climate normal.