Alqueva Reservoir vs Barragem de Montargil
Barragem de Montargil is the warmer swim right now at about 23°C. They are roughly 114 km apart in Portugal.
Alqueva Reservoir
Alentejo
22.8°C
warm · modelled estimate
- October average
- 22.8°C
- Warmest month
- August · 27.0°C
- Coldest month
- 10.0°C
- Swim season
- May–November
Western Europe's biggest artificial lake, warm across the Alentejo summer.
Barragem de Montargil
Alentejo
23.0°C
warm · modelled estimate
- October average
- 23.0°C
- Warmest month
- August · 27.0°C
- Coldest month
- 11.0°C
- Swim season
- May–November
Barragem de Montargil in Alentejo, Portugal warms into the mid-20s °C for reliable summer swimming, and stays mild even in winter.
Month by month
| Lake | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alqueva Reservoir | 11.1°C | 10.0°C | 11.1°C | 14.3°C | 18.5°C | 22.8°C | 25.9°C | 27.0°C | 25.9°C | 22.8°C | 18.5°C | 14.3°C |
| Barragem de Montargil | 12.1°C | 11.0°C | 12.1°C | 15.0°C | 19.0°C | 23.0°C | 25.9°C | 27.0°C | 25.9°C | 23.0°C | 19.0°C | 15.0°C |
Monthly values are modelled from each lake's long-term winter and summer envelope, then refined with today's forecast air temperature for the headline reading.
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