Iguazu Falls · Month comparison
February vs May
May ranks #1 overall vs February at #11. Shoulder month: pleasantly cool (23C/13C), 30% off summer hotel rates, river flow tapering but still strong.
February
#11 of 12 months
Worth considering
Carnaval week (mid-Feb) pulls Brazilian visitors to Foz; otherwise the wettest, hottest month.
- ↑Brazilian Carnaval atmosphere in Foz do Iguaçu nightclubs and Vila A
- ↑Maximum waterfall flow continues from January
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 | February | May |
|---|---|---|
| Weather score | 4 | 8 |
| Value score | 4 | 8 |
| Crowd score | 4 | 7 |
| Events score | 4 | 4 |
| Atmosphere | 9 | 8 |
| Avg high temp | 32°C | 23°C |
| Monthly rain | 170mm | 110mm |
| Daily sunshine | 6.5hrs | 6hrs |
February trade-offs
- ↓Heaviest rainfall month on record — full-day washouts possible
- ↓Boardwalks under Devil's Throat occasionally closed on river surges
- ↓High humidity makes the 4km San Martin Island walk exhausting
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 →