Peru
Peru in September
Where it is warm, dry and good for swimming in Peru in September — compared across the country’s main destinations.
Quick answers
- Where is it warmest in Peru in September?
- Tarapoto is the warmest of the 16 destinations compared, with highs of 33°C (92°F) in September; Puno is the coolest at 18°C (64°F).
- Can you swim in the sea in Peru in September?
- Hardly: even the warmest water, at Chiclayo (17°C (63°F)), stays below 21 °C.
Warmest
33°
Tarapoto
Coolest
18°
Puno
Driest
0 mm
Nazca
Warmest sea
17°
Chiclayo
Tarapoto is the warm end of Peru in September (33°C (92°F)); Puno the cool end (18°C (64°F)). On average it is about as warm as August. Most destinations stay largely dry. Best bets this month: Arequipa, Nazca, and Piura.
Best places in Peru in September
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100 
Arequipa
Arequipa · Peru
23° / 8° 1 mm Sep
96
Nazca
Ica · Peru
22° / 13° 0 mm Sep
97
Piura
Piura · Peru
27° / 15° 1 mm Sep
94
Chiclayo
Lambayeque · Peru
24° / 15° 1 mm Sep
88
Trujillo
La Libertad · Peru
22° / 14° 0 mm Sep
95
Máncora
Piura · Peru
26° / 17° 0 mm Sep
77
Cusco
Cuzco Department · Peru
20° / 4° 17 mm Sep
87
Tacna
Tacna · Peru
20° / 12° 2 mm Sep
Weather in September by city
| Place | Day | Night | Rain | Sea | Score |
|---|---|---|---|---|---|
| Arequipa | 23° | 8° | 1 mm | — | 100 |
| Piura | 27° | 15° | 1 mm | — | 97 |
| Nazca | 22° | 13° | 0 mm | — | 96 |
| Chiclayo | 24° | 15° | 1 mm | 17° | 94 |
| Trujillo | 22° | 14° | 0 mm | 17° | 88 |
| Huanchaco | 22° | 13° | 0 mm | 17° | 88 |
| Tacna | 20° | 12° | 2 mm | — | 87 |
| Ollantaytambo | 23° | 7° | 17 mm | — | 86 |
| Cajamarca | 22° | 7° | 42 mm | — | 79 |
| Lima | 20° | 13° | 3 mm | 17° | 78 |
| Cusco | 20° | 4° | 17 mm | — | 77 |
| Juliaca | 19° | 1° | 24 mm | — | 77 |
| Huaraz | 20° | 6° | 16 mm | — | 75 |
| Puno | 18° | 1° | 31 mm | — | 74 |
| Iquitos | 32° | 21° | 199 mm | — | 42 |
| Tarapoto | 33° | 21° | 113 mm | — | 38 |
Festivals in Peru in September
Frequently asked questions
What is the weather like in Peru in September?
Average daytime highs range from 18° in Puno to 33° in Tarapoto.
Can you swim in Peru in September?
The sea is cool: the warmest water is around Chiclayo at about 17°.