The best time to visit Peru
The best time to visit Peru for warm, sunny weather is May to August, when its destinations average a Sunshine Score of 82/100 with daytime highs around 25°C / 77°F. April and September are quieter shoulder-season alternatives with still-reliable sun. The sea is swimmable (21°C+) about 6 months a year, warmest in February at 25°C.
Peru by month, averaged across 15 destinations from long-term climate normals — the best stretch is highlighted.
| Month | Sunshine Score | Avg day high | Rain | Sea | For a trip |
|---|---|---|---|---|---|
| January | 75 | 26° / 79°F | 94 mm | 23° | Excellent |
| February | 74 | 26° / 79°F | 97 mm | 25° | Excellent |
| March | 73 | 26° / 79°F | 97 mm | 24° | Excellent |
| April | 76 | 25° / 77°F | 65 mm | 22° | Excellent |
| May | 80 | 25° / 77°F | 42 mm | 21° | Excellent |
| June | 82 | 25° / 77°F | 29 mm | 20° | Excellent |
| July | 82 | 24° / 75°F | 24 mm | 19° | Excellent |
| August | 82 | 25° / 77°F | 22 mm | 19° | Excellent |
| September | 79 | 26° / 79°F | 31 mm | 19° | Excellent |
| October | 79 | 26° / 79°F | 58 mm | 20° | Excellent |
| November | 80 | 26° / 79°F | 64 mm | 20° | Excellent |
| December | 77 | 25° / 77°F | 86 mm | 21° | Excellent |
When to go — and when to think twice
Best overall: May to August — Peru's warmest, most reliable stretch (Sunshine Score 82/100, ~25°C / 77°F days). Shoulder season: April and September — quieter, still sunny. Hottest: January, ~26°C / 79°F. Wettest: February (97 mm) — pack for showers.
Where to base yourself for sunshine: Arequipa (3,879 h/yr), Juliaca (3,736 h/yr), Ayacucho (3,033 h/yr). See every Peru destination with a full climate card, or where it's sunny worldwide, month by month.