Climate averages 1991–2020
Porto weather
in October.
A mild, wet month: the joint 5th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a mild month in Porto: daytime highs average 20.1°C and nights cool to about 13.1°C. By daytime temperature it is the joint 5th warmest of the 12 months.
Expect about 166 mm of rain on roughly 13 days, which makes October a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 09 min on an average October day.
The nearest other city in this atlas is Braga (47 km away). In October its highs average 19.4°C, 0.8°C cooler than Porto, with 210 mm of rain.
Among the 12 cities listed in Portugal, Porto ranks joint 9th of 12 for the warmest October highs and 10th of 12 for the driest October (rainfall, lowest first). The mean October high of those 12 cities is 20.9°C; Porto is 0.7°C cooler than that mean.
From October to November, average highs fall by 4.5°C to 15.7°C, and monthly rainfall falls from 166 mm to 163 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Porto climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.8°C6.3°C | 6.3°C | 150 | 12.2 | 9.610 h |
| February | 13.9°C6.3°C | 6.3°C | 103 | 9.6 | 10.611 h |
| March | 16.3°C8.1°C | 8.1°C | 121 | 10.2 | 11.912 h |
| April | 17.5°C9.7°C | 9.7°C | 121 | 11.8 | 13.313 h |
| May | 20.1°C12.3°C | 12.3°C | 101 | 11.1 | 14.514 h |
| June | 23.2°C15.0°C | 15.0°C | 40 | 6.3 | 15.115 h |
| July | 25.6°C16.7°C | 16.7°C | 23 | 4.0 | 14.815 h |
| August | 26.2°C17.2°C | 17.2°C | 29 | 4.5 | 13.814 h |
| September | 24.1°C15.7°C | 15.7°C | 64 | 6.6 | 12.513 h |
| October, selected | 20.1°C13.1°C | 13.1°C | 166 | 12.7 | 11.111 h |
| November | 15.7°C9.6°C | 9.6°C | 163 | 12.9 | 9.910 h |
| December | 13.5°C7.4°C | 7.4°C | 167 | 12.4 | 9.39 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
- Braga in OctoberPortugal · 47 kmHigh 19.4°C · Low 10.7°C · 210 mm rain
- Aveiro in OctoberPortugal · 56 kmHigh 21.0°C · Low 13.4°C · 143 mm rain
- Viseu in OctoberPortugal · 80 kmHigh 18.9°C · Low 10.5°C · 168 mm rain
- Coimbra in OctoberPortugal · 106 kmHigh 21.6°C · Low 12.3°C · 117 mm rain
- Vigo in OctoberSpain · 121 kmHigh 18.8°C · Low 12.4°C · 214 mm rain
- Pontevedra in OctoberSpain · 143 kmHigh 19.6°C · Low 12.4°C · 199 mm rain
- Ourense in OctoberSpain · 146 kmHigh 19.6°C · Low 10.7°C · 110 mm rain
- Leiria in OctoberPortugal · 157 kmHigh 21.6°C · Low 13.7°C · 96 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Porto) is explained once on the Porto year overview and on the Sources, method and limits page.