Best time to visit Porto
By our rule, the best months to visit Porto are March to September. Daily highs then run from 17.7 °C (63.9 °F) in March to 27.7 °C (81.9 °F) in August, and rain from 22.3 mm in July to 115.1 mm in April, as 1991-2020 model estimates; figures in brackets are converted.
Rule: daily high over 16 °C and up to 28 °C, low 8 °C or more, rain 150 mm or less. Means hide hot, cold and wet days. No data on crowds, prices or events. How we test each month
Last updated : first sourced version.
Each month against the rule
| Month | Meets the rule | High, °C | Low, °C | Rain, mm |
|---|---|---|---|---|
| Jan | No: days average 14.1 °C, under our 16 °C; nights average 6.4 °C, under our 8 °C | 14.1 | 6.4 | 133.3 |
| Feb | No: days average 15.1 °C, under our 16 °C; nights average 6.4 °C, under our 8 °C | 15.1 | 6.4 | 93.9 |
| Mar | Yes | 17.7 | 8.2 | 109.4 |
| Apr | Yes | 19.2 | 9.8 | 115.1 |
| May | Yes | 21.8 | 12.4 | 98.1 |
| Jun | Yes | 24.8 | 15.2 | 37.6 |
| Jul | Yes | 27.2 | 16.9 | 22.3 |
| Aug | Yes | 27.7 | 17.3 | 26.3 |
| Sep | Yes | 25.6 | 15.9 | 59.5 |
| Oct | No, a near miss: rain is 151.2 mm, just over our 150 mm | 21.4 | 13.3 | 151.2 |
| Nov | No, a near miss: rain is 151.0 mm, just over our 150 mm | 16.8 | 9.7 | 151.0 |
| Dec | No: days average 14.7 °C, under our 16 °C; nights average 7.5 °C, under our 8 °C; rain is 150.9 mm, over our 150 mm | 14.7 | 7.5 | 150.9 |
Model estimate 1991-2020, not a weather station: ERA5-Land model estimates (Copernicus), computed by City by Month for the grid cell nearest the city. Daily high and Days with rain: model estimate, adjusted against station records. Licence: CC BY 4.0. Checked . How we make and test model estimates
Notes. Sunshine: Not in our ERA5-Land estimates.
Months by what matters to you
1991-2020 model estimates.
- Warmest daily highs: August 27.7 °C, July 27.2 °C, September 25.6 °C.
- Coolest daily highs: January 14.1 °C, December 14.7 °C, February 15.1 °C.
- Driest: July 22.3 mm, August 26.3 mm, June 37.6 mm.
- Sunniest: no data.
- Longest days: June 15 h 08 min, July 14 h 51 min, May 14 h 29 min.
Top three months by each mean. Equal values share a place. Day length on the 15th of each month, 2026.
Day length: NOAA solar equations, checked .
Sources
- Attribution: Copernicus Climate Change Service (2025): ERA5 Land hourly time-series data from 1950 to present. Copernicus Climate Change Service (C3S) Climate Data Store (CDS). DOI: 10.24381/ee82e357. Accessed on the check date shown. Generated using or contains modified Copernicus Climate Change Service information 2025. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains. Licence: CC BY 4.0. Checked .
- NOAA Solar Calculator equations, computed locally, NOAA Global Monitoring Laboratory (method); City by Month (computation). Attribution: Computed with the NOAA Solar Calculator method (no NOAA endorsement implied). Licence: Method, not data. Checked .
Cite this page: City by Month. "Best time to visit Porto, month by month". https://citybymonth.com/cities/portugal/porto/best-time/. Last updated 8 November 2026.