Weather in Porto for May 2026
In general, the average temperature in Porto at the beginning of May is 18.9 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 21.9 °C by the end of May.
Porto experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 75.5 mm.
Is May a good time to visit Porto? check out the best time to travel to Porto page.
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Porto Weather May
Temperatures trend during May in Porto
May weather in Porto day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Patchy rain possible | 17° /11° | 2.4 mm | 4 | |
| 2 May |  Sunny | 18° /11° | 3 mm | 5 | |
| 3 May |  Overcast | 19° /11° | 3.5 mm | 5 | |
| 4 May | Sunny | 18° /12° | 6.9 mm | 5 | |
| 5 May | Patchy rain possible | 19° /12° | 5.2 mm | 5 | |
| 6 May | Sunny | 20° /12° | 0.8 mm | 5 | |
| 7 May | Sunny | 21° /12° | 0 mm | 6 | |
| 8 May | Sunny | 21° /13° | 0.2 mm | 5 | |
| 9 May |  Partly cloudy | 20° /13° | 9 mm | 5 | |
| 10 May |  Moderate or heavy rain shower | 19° /12° | 7.1 mm | 5 | |
| 11 May | Sunny | 19° /11° | 0.9 mm | 5 | |
| 12 May |  Cloudy | 18° /11° | 1.7 mm | 4 | |
| 13 May | Light rain shower | 19° /12° | 3.1 mm | 5 | |
| 14 May | Sunny | 19° /12° | 1.6 mm | 5 | |
| 15 May | Sunny | 19° /12° | 3 mm | 5 | |
| 16 May | Moderate rain at times | 20° /13° | 2.5 mm | 5 | |
| 17 May | Partly cloudy | 21° /13° | 0.7 mm | 5 | |
| 18 May |  Heavy rain at times | 20° /13° | 2.5 mm | 4 | |
| 19 May | Patchy rain possible | 19° /12° | 0.5 mm | 5 | |
| 20 May | Partly cloudy | 21° /13° | 0.3 mm | 6 | |
| 21 May | Partly cloudy | 21° /13° | 1.2 mm | 5 | |
| 22 May | Patchy rain possible | 19° /13° | 0.9 mm | 5 | |
| 23 May | Partly cloudy | 20° /12° | 0.2 mm | 5 | |
| 24 May | Patchy rain possible | 20° /13° | 0.9 mm | 5 | |
| 25 May | Sunny | 21° /12° | 0.1 mm | 6 | |
| 26 May | Sunny | 21° /13° | 1.4 mm | 5 | |
| 27 May | Sunny | 23° /14° | 2.6 mm | 6 | |
| 28 May | Sunny | 22° /15° | 5.1 mm | 5 | |
| 29 May | Sunny | 22° /15° | 1.5 mm | 6 | |
| 30 May | Sunny | 22° /16° | 1.2 mm | 5 | |
| 31 May | Sunny | 22° /15° | 1.7 mm | 5 | |
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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
- 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.