Climate averages 1991–2020
Porto weather
in July.
A warm, fairly dry month: the 2nd warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Porto: daytime highs average 25.6°C and nights cool to about 16.7°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 23 mm of rain on roughly 4 days, which makes July a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 49 min on an average July day.
The nearest other city in this atlas is Braga (47 km away). In July its highs average 26.0°C, about as warm as Porto, with 28 mm of rain.
Among the 12 cities listed in Portugal, Porto ranks 9th of 12 for the warmest July highs and 11th of 12 for the driest July (rainfall, lowest first). The mean July high of those 12 cities is 26.3°C; Porto is 0.7°C cooler than that mean.
From July to August, average highs rise by 0.6°C to 26.2°C, and monthly rainfall rises from 23 mm to 29 mm.
The annual picture
July 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, selected | 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 | 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
July in nearby cities
- Braga in JulyPortugal · 47 kmHigh 26.0°C · Low 15.1°C · 28 mm rain
- Aveiro in JulyPortugal · 56 kmHigh 26.8°C · Low 16.8°C · 12 mm rain
- Viseu in JulyPortugal · 80 kmHigh 27.6°C · Low 15.4°C · 19 mm rain
- Coimbra in JulyPortugal · 106 kmHigh 28.3°C · Low 16.0°C · 8.5 mm rain
- Vigo in JulySpain · 121 kmHigh 23.6°C · Low 15.8°C · 35 mm rain
- Pontevedra in JulySpain · 143 kmHigh 25.1°C · Low 16.1°C · 34 mm rain
- Ourense in JulySpain · 146 kmHigh 26.6°C · Low 15.1°C · 24 mm rain
- Leiria in JulyPortugal · 157 kmHigh 26.5°C · Low 16.6°C · 6.2 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.