Weather in Porto for May 2025
In general, the average temperature in Porto at the beginning of May is 18.6 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.4 °C by the end of May.
Porto sees moderate rainfall in May, averaging 9 rainy days.
Is May a good time to visit Porto? check out the best time to travel to Porto page.
- New! Chat with our AI weatherman - it’s amazing and free.
Porto in May average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  17° | 2  21° | 3  18° | 4  18° | |||
| 5  17° | 6 18° | 7 21° | 8  24° | 9 22° | 10 21° | 11 21° |
| 12 19° | 13 19° | 14 18° | 15 19° | 16 19° | 17 21° | 18 19° |
| 19 19° | 20 19° | 21 19° | 22 20° | 23  22° | 24 22° | 25 21° |
| 26 19° | 27 20° | 28 19° | 29 21° | 30 21° | 31 22° |
You can click on date
Temperatures trend during May in Porto
May weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May | Overcast | 17° /11° | 5.6 mm | 4 | |
| 2 May | Partly cloudy | 21° /11° | 3.4 mm | 5 | |
| 3 May | Heavy rain at times | 18° /12° | 3.7 mm | 5 | |
| 4 May | Moderate rain at times | 18° /13° | 10.1 mm | 5 | |
| 5 May | Patchy rain possible | 17° /13° | 13 mm | 4 | |
| 6 May | Heavy rain at times | 18° /12° | 2 mm | 5 | |
| 7 May | Partly cloudy | 21° /11° | 0 mm | 5 | |
| 8 May | Sunny | 24° /14° | 0 mm | 6 | |
| 9 May | Patchy rain possible | 22° /15° | 0.5 mm | 6 | |
| 10 May | Partly cloudy | 21° /14° | 0 mm | 6 | |
| 11 May | Sunny | 21° /12° | 0 mm | 6 | |
| 12 May | Sunny | 19° /11° | 0 mm | 5 | |
| 13 May | Sunny | 19° /11° | 1.2 mm | 5 | |
| 14 May | Partly cloudy | 18° /12° | 2.8 mm | 5 | |
| 15 May | Sunny | 19° /12° | 3.1 mm | 5 | |
| 16 May | Partly cloudy | 19° /12° | 1.3 mm | 5 | |
| 17 May | Partly cloudy | 21° /12° | 1 mm | 6 | |
| 18 May | Sunny | 19° /12° | 2.4 mm | 5 | |
| 19 May | Partly cloudy | 19° /12° | 0.4 mm | 5 | |
| 20 May | Overcast | 19° /13° | 0.7 mm | 5 | |
| 21 May | Overcast | 19° /13° | 1.1 mm | 5 | |
| 22 May | Partly cloudy | 20° /13° | 0.7 mm | 5 | |
| 23 May | Cloudy | 22° /12° | 0 mm | 5 | |
| 24 May | Patchy rain possible | 22° /14° | 0.1 mm | 6 | |
| 25 May | Sunny | 21° /14° | 0.2 mm | 5 | |
| 26 May | Moderate or heavy rain shower | 19° /12° | 3.5 mm | 5 | |
| 27 May | Moderate or heavy rain shower | 20° /12° | 6.6 mm | 5 | |
| 28 May | Moderate or heavy rain shower | 19° /13° | 12.7 mm | 5 | |
| 29 May | Patchy rain possible | 21° /14° | 3.4 mm | 5 | |
| 30 May | Moderate rain at times | 21° /15° | 1.9 mm | 5 | |
| 31 May | Moderate rain at times | 22° /16° | 1.1 mm | 6 | |
| Next | |||||
Guide for Porto in May
In May, Porto, Portugal experiences a transition from spring to early summer, bringing about pleasant weather conditions. At the beginning of the month, Porto typically enjoys mild temperatures with an average high of 19° and a low of 12°.
The city experiences around 8 hours of sunshine per day, making it an ideal time to explore the charming streets and picturesque waterfront. Additionally, May sees relatively low precipitation, with occasional light showers.
As the month progresses, Porto begins to witness a gradual increase in temperatures. By the end of May, the average high temperature rises to around 22°, while the low hovers around 14°. The number of sunny hours also increases, providing ample opportunities for outdoor activities and sightseeing.
The sea temperature becomes more inviting for beachgoers, making it a great time to visit the nearby coastline.
Overall, May offers a delightful climate in Porto, making it an excellent time to visit and experience the city's rich culture, historic landmarks, and delectable cuisine.
Porto in May - FAQ
What to pack to Porto in May?
As you prepare for your trip to Porto in May, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Porto, during May, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
May rainfall patterns in Porto
UV exposure in Porto during May
Quick links
Where is Porto?Get accurate weather forecasts for Porto, located at latitude 41.15 and longitude -8.611. Stay updated with localized weather information tailored for Porto.