Porto União in May
7.4out of 10
Possible, with caveats
Mild: highs around 20°C. Frequent rain: about 9 rainy days.
20°CAvg high
10°CAvg low
9Rainy days (94 mm)
10:43 hDaylight
06:59Sunrise · 17:42 Sunset
Why this score
- Mild: highs around 20°C
- Frequent rain: about 9 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in May varies a lot between years (±3.8 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 27°C | 17°C | 158 mm | 20 | – | – | 6.1 |
| February | 27°C | 17°C | 148 mm | 19 | – | – | 6.3 |
| March | 26°C | 16°C | 100 mm | 14 | – | – | 7.1 |
| April | 24°C | 13°C | 73 mm | 9 | – | – | 7.8 |
| May | 20°C | 10°C | 94 mm | 9 | – | – | 7.4 |
| June | 19°C | 9°C | 95 mm | 9 | – | – | 7.3 |
| July | 19°C | 8°C | 82 mm | 8 | – | – | 7.4 |
| August | 21°C | 9°C | 76 mm | 7 | – | – | 7.9 |
| September | 22°C | 11°C | 137 mm | 11 | – | – | 7.3 |
| October | 23°C | 13°C | 152 mm | 15 | – | – | 6.8 |
| November | 25°C | 15°C | 115 mm | 14 | – | – | 7.1 |
| December | 26°C | 16°C | 138 mm | 17 | – | – | 6.5 |
Frequently asked questions
How hot is Porto União in May?
Daytime highs average 20°C and nights about 10°C.
When is the best time to visit Porto União?
The best months are August, April, May, July.