Rio das Ostras in May
7.8out of 10
Yes, a good time to go
Warm and comfortable: highs around 26°C. Frequent rain: about 10 rainy days.
26°CAvg high
19°CAvg low
10Rainy days (61 mm)
10:55 hDaylight
06:16Sunrise · 17:12 Sunset
Why this score
- Warm and comfortable: highs around 26°C
- Frequent rain: about 10 rainy days
What to wear and pack
- T-shirts and light layers
- Shorts or a light skirt
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in May varies a lot between years (±3.1 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 | 30°C | 23°C | 206 mm | 17 | – | – | 5.9 |
| February | 31°C | 23°C | 140 mm | 13 | – | – | 6.6 |
| March | 30°C | 23°C | 172 mm | 18 | – | – | 6.1 |
| April | 28°C | 21°C | 85 mm | 12 | – | – | 7.5 |
| May | 26°C | 19°C | 61 mm | 10 | – | – | 7.8 |
| June | 26°C | 18°C | 31 mm | 6 | – | – | 8.3 |
| July | 25°C | 17°C | 29 mm | 6 | – | – | 8.4 |
| August | 26°C | 18°C | 34 mm | 6 | – | – | 8.2 |
| September | 26°C | 19°C | 73 mm | 10 | – | – | 7.7 |
| October | 27°C | 20°C | 108 mm | 12 | – | – | 7.4 |
| November | 27°C | 21°C | 202 mm | 18 | – | – | 6.2 |
| December | 29°C | 23°C | 222 mm | 19 | – | – | 6.1 |
Frequently asked questions
How hot is Rio das Ostras in May?
Daytime highs average 26°C and nights about 19°C.
When is the best time to visit Rio das Ostras?
The best months are July, June, August.