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.
Comfortable for swimming. Now in the Aare +20°. Swimming season — from June to September.
Water temperature map of the Aare
ColderWarmer
Water temperature in the Aare by city today 📍
+21°
Bern
+21°
Vikhtrakh
+20°
Ferenbalm
+21°
Frauenkappelen
+21°
Fulenbakh
+20°
Grettsenbakh
+21°
Ittigen
+20°
Loyfelfingen
+21°
Myuleberg
+21°
Guntsgen
+21°
Khegendorf
+21°
Koeniz
| City | Now | Swimming |
|---|---|---|
| Bern | +21° | Comfortable for swimming |
| Vikhtrakh | +21° | Comfortable for swimming |
| Ferenbalm | +20° | Comfortable for swimming |
| Frauenkappelen | +21° | Comfortable for swimming |
| Fulenbakh | +21° | Comfortable for swimming |
| Grettsenbakh | +20° | Comfortable for swimming |
| Ittigen | +21° | Comfortable for swimming |
| Loyfelfingen | +20° | Comfortable for swimming |
| Myuleberg | +21° | Comfortable for swimming |
| Guntsgen | +21° | Comfortable for swimming |
| Khegendorf | +21° | Comfortable for swimming |
| Koeniz | +21° | Comfortable for swimming |
| Shenenverd | +20° | Comfortable for swimming |
| Vangen-Olten | +21° | Comfortable for swimming |
| Langental | +20° | Comfortable for swimming |
| Lentsburg | +20° | Comfortable for swimming |
| Egerten | +20° | Comfortable for swimming |
| Belmund | +20° | Comfortable for swimming |
| Niderlents | +20° | Comfortable for swimming |
| Bryug | +20° | Comfortable for swimming |
| Aarberg | +21° | Comfortable for swimming |
| Ipzakh | +20° | Comfortable for swimming |
| Ruppersvil | +20° | Comfortable for swimming |
| Nidau | +20° | Comfortable for swimming |
| Shafiskhaym | +20° | Comfortable for swimming |
| Kalnakh | +21° | Comfortable for swimming |
| Orpund | +20° | Comfortable for swimming |
| Aarau | +20° | Comfortable for swimming |
| Kappelen | +21° | Comfortable for swimming |
| Port | +20° | Comfortable for swimming |
| Shtaufen | +20° | Comfortable for swimming |
| Radelfingen | +21° | Comfortable for swimming |
| Shtuden | +20° | Comfortable for swimming |
| Buks | +20° | Comfortable for swimming |
| Erlinsbakh | +20° | Comfortable for swimming |
| Toyffelen | +21° | Comfortable for swimming |
| Grenikhen | +20° | Comfortable for swimming |
| Zeedorf | +21° | Comfortable for swimming |
| Vorben | +20° | Comfortable for swimming |
| Aarvangen | +20° | Comfortable for swimming |
🎣 Fishing in cities on the Aare
Water temperature forecast in the Aare 📅
Thursday
13 August
+20°
Friday
14 August
+20°
Saturday
15 August
+20°
Sunday
16 August
+19°
Monday
17 August
+19°
Tuesday
18 August
+19°
Wednesday
19 August
+19°
Computed by a climate model. Water changes slowly — no sharp shifts.
Water temperature in the Aare this weekend
Saturday, 15 August · water +20° · comfortable for swimming
Sunday, 16 August · water +19° · comfortable for swimming
Water temperature in the Aare for a month
There is no exact monthly water forecast — it changes slowly. The reference is the climate normal: up to +20° in summer. The monthly normal is below.
Monthly water temperature in the Aare 🗓️
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| +4 | +6 | +6 | +10 | +16 | +18 | +18 | +20 | +19 | +14 | +9 | +8 |
Climate normal (model estimate).
Swimming conditions in the Aare by month
Jan+4°Cold, only for the hardy.
Feb+6°Cold, only for the hardy.
Mar+6°Cold, only for the hardy.
Apr+10°Cold, only for the hardy.
May+16°Cool for swimming.
Jun+18°Swimming season — comfortable.
Jul+18°Swimming season — comfortable.
Aug+20°Swimming season — comfortable.
Sep+19°Swimming season — comfortable.
Oct+14°Cold, only for the hardy.
Nov+9°Cold, only for the hardy.
Dec+8°Cold, only for the hardy.
When to swim in the Aare 🏖️
🏖️
Comfortable to swim in from June to September, when the water warms to +17° and above.
Cities on the Aare 📍
BernVikhtrakhFerenbalmFrauenkappelenFulenbakhGrettsenbakhIttigenLoyfelfingenMyulebergGuntsgenKhegendorfKoenizShenenverdVangen-OltenLangentalLentsburgEgertenBelmundNiderlentsBryugAarbergIpzakhRuppersvilNidauShafiskhaymKalnakhOrpundAarauKappelenPortShtaufenRadelfingenShtudenBuksErlinsbakhToyffelenGrenikhenZeedorfVorbenAarvangen
FAQ about water in the Aare ❓
What is the water temperature in the Aare now?
Now +20° — Comfortable for swimming.
Can you swim in the Aare?
Comfortable season — from June to September.
When is water warmest in the Aare?
Warmest in August — up to +20°.
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 Aare on this day
| City | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
|---|---|---|---|---|---|---|---|---|---|---|
| Bern | +21° | +22° | +22° | +21° | +20° | +20° | +20° | +21° | +22° | +21° |
| Vikhtrakh | +21° | +21° | +22° | +21° | +20° | +20° | +20° | +21° | +22° | +21° |
| Ferenbalm | +20° | +21° | +21° | +20° | +19° | +19° | +20° | +21° | +21° | +20° |
| Frauenkappelen | +21° | +22° | +22° | +21° | +20° | +20° | +20° | +21° | +22° | +21° |
| Fulenbakh | +20° | +21° | +21° | +20° | +20° | +19° | +20° | +21° | +21° | +21° |
Climate normal (model estimate for this date), not a measurement archive.
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Water temperature in the Aare — in detail
Water temperature in the Aare is tracked across 152 cities. The water is now about +20°. The page has a temperature map by city, a daily forecast and a monthly climate normal.