Iguazu Falls · Month comparison

July vs May

May ranks #1 overall vs July at #9. Shoulder month: pleasantly cool (23C/13C), 30% off summer hotel rates, river flow tapering but still strong.

July dry-season Iguazu Falls with individual cataracts clearly visible

July

#9 of 12 months

Strong option

Dry-season winter peak: cool clear days, lowest water flow visibly, school-holiday crowds at maximum.

  • ↑Lowest water levels reveal individual cataracts (vs single wall of mist)
  • ↑Sunshine and 22C makes for ideal hiking conditions
May cooler-light Iguazu Falls Devil's Throat from above

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
FactorJulyMay
Weather score
8
8
Value score
5
8
Crowd score
2
7
Events score
5
4
Atmosphere
7
8
Avg high temp22°C23°C
Monthly rain80mm110mm
Daily sunshine6.5hrs6hrs

July trade-offs

  • ↓Argentine winter holidays (mid-July) peak domestic crowd
  • ↓Devil's Throat less thunderous than summer
  • ↓Sheraton Iguazu Resort books out 3 months ahead

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
See all 12 months for Iguazu Falls →July in detail →May in detail →
Scores compare months within Iguazu Falls. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →