Oaxaca, Mexico

If you're planning a trip of museums, food and old streets, Oaxaca deserves a close look. This Mexico destination lies in a highland climate, and its climate record peaks at a 99/100 sun score in April — 31°C afternoons under 38% average cloud cover.

April is the heat peak, averaging 31°C highs; September is the cool end, when nights dip to around 11°C. The wet–dry contrast is pronounced: 67% rain-day odds in September against 1% in February. Beach-warm afternoons (24°C and up) hold through January–December.

Averaged by season, sun scores land at 97 for spring, 87 for summer, 89 for autumn and 98 for winter — with typical afternoons of 30°, 26°, 25° and 26°C respectively. Winter wins on the numbers and summer loses them; everything in between is a trade-off between warmth and crowds. A practical compromise is December — the edge of the warm window, averaging 26°C with a 98 sun score.

Best months to visit Oaxaca

Ranked purely on sunshine odds, the podium is April at 99/100, then January at 98 and February at 98. The dependable window is wider than the podium, though: January–December all score 70 or better. The month to avoid on pure weather odds is September (81/100).

For context: in April, Oaxaca is drier than 96% of the mountain destinations we track.

Month-by-month breakdown for Oaxaca → · More destinations for April →

Right now the 16-day outlook shows 11 mostly-clear days (under 40% cloud) and none with real rain risk, with temperatures between 9°C and 29°C — which is how Oaxaca earns its current 98/100 sun score.