PT Portugal · Peso da Régua
Douro Valley
weather by month.
Historical station evidence for choosing when to travel—not a forecast, vineyard measurement or guarantee for a particular visit.
01 1991–2020 normals
Twelve months, one qualified station.
The highlighted rows are Follow The Vines’ editorial travel window, not a conclusion produced by the weather data.
| Month | Mean high | Mean low | Rain | Wet days | Usable years |
|---|---|---|---|---|---|
| January | 13.9°C | 6.2°C | 144 mm | 11.9 | 20 |
| February | 15.1°C | 6.8°C | 89 mm | 9.6 | 20 |
| March | 17.3°C | 8.8°C | 96 mm | 9.2 | 20 |
| April | 17.9°C | 9.8°C | 93 mm | 10.2 | 20 |
| May | 20°C | 12°C | 90 mm | 9.3 | 20 |
| June | 22.9°C | 14.5°C | 31 mm | 4.6 | 20 |
| July | 24.3°C | 15.4°C | 20 mm | 3.4 | 20 |
| August | 25°C | 15.7°C | 31 mm | 3 | 20 |
| SeptemberEditorial window | 23°C | 14.6°C | 76 mm | 6.7 | 20 |
| OctoberEditorial window | 20.2°C | 12.5°C | 144 mm | 11.6 | 20 |
| November | 16.6°C | 9.2°C | 171 mm | 12.6 | 20 |
| December | 14.4°C | 7.3°C | 161 mm | 12.7 | 20 |
A wet day has at least 1 mm of precipitation in the underlying monthly projection. Means smooth variation between years and within a month.
02 Evidence passport
What this page can—and cannot—say.
- Evidence found
- All 12 monthly normals from NOAA station PO000008546, with at least 20 usable 1991–2020 years in every month.
- Source coverage
- PORTO is 68 km from the fixed Peso da Régua anchor and differs by 12 m in elevation. Evidence grade: medium.
- What this means
- The table is suitable for comparing broad monthly travel patterns at this regional base.
- What this does not mean
- It does not describe every vineyard, forecast your dates, measure heat stress or guarantee safe and comfortable travel.
— Turn evidence into a trip
Keep the weather in its lane.
Use the normals to choose a month, then use the editorial guide to shape the visit. Check an official forecast close to departure.
BottlePicker is a related 37X service and may earn commission from retailer links. That does not affect Follow The Vines’ climate filters or region order.
Sources & method
NOAA GHCN-Daily provides station observations; GeoNames supplies the fixed regional anchor. The approved build turns the raw R2 holdings into this small, dated projection and deploys no raw archive.
Projection generated 2026-08-25. Publication rule: at least 10 usable years per month, within 100 km and 350 m elevation difference.