January in Iguazu Falls — workable with trade-offs
Trade-offs · 5.7/10January averages 26°C (79°F) with humidity around 75%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
At 198 mm this is a genuinely wet month: about 29 sunny days in total, and outdoor plans need an indoor fallback.
It scores 5.7/10 here, 12th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are light for this destination.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, August is materially better in Iguazu Falls — 3 points higher on the same scale.
February in Iguazu Falls — workable with trade-offs
Trade-offs · 6.3/10February averages 26°C (78°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
At 134 mm this is a genuinely wet month: about 27 sunny days in total, and outdoor plans need an indoor fallback.
It scores 6.3/10 here, 9th of 12 months, against 8.7/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, August is materially better in Iguazu Falls — 2.4 points higher on the same scale.
March in Iguazu Falls — workable with trade-offs
Trade-offs · 6.2/10March averages 25°C (77°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
At 169 mm this is a genuinely wet month: about 29 sunny days in total, and outdoor plans need an indoor fallback.
It scores 6.2/10 here, 10th of 12 months, against 8.7/10 in the destination's best month.
Expect low-season pricing, and crowds are light for this destination.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, August is materially better in Iguazu Falls — 2.5 points higher on the same scale.
April in Iguazu Falls — reliably good (4th best month)
Good · 7.6/10April averages 22°C (72°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
At 149 mm this is a genuinely wet month: about 25 sunny days in total, and outdoor plans need an indoor fallback.
It scores 7.6/10 here, 4th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
May in Iguazu Falls — reliably good (5th best month)
Good · 7.4/10May averages 19°C (66°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 165 mm this is a genuinely wet month: about 24 sunny days in total, and outdoor plans need an indoor fallback.
It scores 7.4/10 here, 5th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
June in Iguazu Falls — reliably good (7th best month)
Good · 7.3/10June averages 17°C (63°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
At 165 mm this is a genuinely wet month: about 22 sunny days in total, and outdoor plans need an indoor fallback.
It scores 7.3/10 here, 7th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella, footwear you can get muddy.
July in Iguazu Falls — reliably good (2nd best month)
Good · 8.4/10July averages 17°C (63°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 81 mm, so plan one flexible day in three; you still get about 26 sunny days and 10.7 hours of daylight.
It scores 8.4/10 here, 2nd of 12 months, against 8.7/10 in the destination's best month.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
August in Iguazu Falls — the year's strongest window
Best window · 8.7/10August averages 19°C (66°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 80 mm, so plan one flexible day in three; you still get about 26 sunny days and 11.2 hours of daylight.
On our climate-comfort scale this is the top-ranked month of the year for Iguazu Falls at 8.7/10 — the reference point every other month on this page is measured against.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer, footwear you can get muddy.
September in Iguazu Falls — reliably good (3rd best month)
Good · 8.1/10September averages 22°C (71°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
At 135 mm this is a genuinely wet month: about 25 sunny days in total, and outdoor plans need an indoor fallback.
It scores 8.1/10 here, 3rd of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
October in Iguazu Falls — reliably good (6th best month)
Good · 7.4/10October averages 22°C (72°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
289 mm of rain puts this in monsoon territory — about 23 sunny days across the whole month, and multi-day washouts are normal.
It scores 7.4/10 here, 6th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
November in Iguazu Falls — reliably good (8th best month)
Good · 7/10November averages 24°C (75°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
At 160 mm this is a genuinely wet month: about 28 sunny days in total, and outdoor plans need an indoor fallback.
It scores 7/10 here, 8th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are moderate.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, August is materially better in Iguazu Falls — 1.7 points higher on the same scale.
December in Iguazu Falls — workable with trade-offs
Trade-offs · 6.2/10December averages 26°C (78°F) — warm enough for beach and boat plans, still short of the heat that pushes sightseeing into early morning.
At 160 mm this is a genuinely wet month: about 29 sunny days in total, and outdoor plans need an indoor fallback.
It scores 6.2/10 here, 11th of 12 months, against 8.7/10 in the destination's best month.
Expect mid-season pricing, and crowds are light for this destination.
Pack light clothing, swimwear and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.
If your dates are flexible, August is materially better in Iguazu Falls — 2.5 points higher on the same scale.
