Iguazu Falls · Month comparison
November vs May
May ranks #1 overall vs November at #7. Shoulder month: pleasantly cool (23C/13C), 30% off summer hotel rates, river flow tapering but still strong.
November
#7 of 12 months
Strong option
Final quiet month before summer holiday rush — rain heavy but volume of falls building dramatically.
- ↑Last chance for sub-peak pricing before December surge
- ↑Water flow visibly approaches summer levels
May
#1 of 12 months
Best match
Shoulder month: pleasantly cool (23C/13C), 30% off summer hotel rates, river flow tapering but still strong.
- ↑Hotel Loi Suites Iguazu from USD 180 vs USD 280+ in January
- ↑Argentine Park Upper Trail cool enough for full-day walking
| Factor | November | May |
|---|---|---|
| Weather score | 6 | 8 |
| Value score | 6 | 8 |
| Crowd score | 7 | 7 |
| Events score | 4 | 4 |
| Atmosphere | 8 | 8 |
| Avg high temp | 30°C | 23°C |
| Monthly rain | 160mm | 110mm |
| Daily sunshine | 7hrs | 6hrs |
November trade-offs
- ↓Heavy rain often dictates schedule
- ↓Devil's Throat boardwalks closed on multiple days for safety
- ↓Humidity uncomfortable for 7km Upper Trail walks
May trade-offs
- ↓Evenings can drop to 10C — bring layers
- ↓Some cataracts already visibly thinning vs Feb
- ↓Boat tours (Macuco) suspend on cold/cloudy days
Scores compare months within Iguazu Falls. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →