Verdict: Good month
Oaxaca Weather in September
September hits the sweet spot in Oaxaca — highs around 25°C (77°F), ideal for a full day on foot. It's also the wet side of the calendar: rain falls on about 21 days, so build flexibility into plans. Overall, September is a solid month to visit Oaxaca.
Average high
25°C / 77°F
Average low
15°C / 59°F
Rain days
~21
Precipitation
185 mm
What to pack for Oaxaca in September
- Summer clothes, plus one light layer for air-con and evenings
- Rain gear is non-negotiable — expect rain on roughly 21 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in Oaxaca: Apr (32°C / 90°F) · Coolest: Aug (25°C / 77°F) · Wettest: Aug (~22 rain days)
26°
11°
Jan
28°
11°
Feb
31°
13°
Mar
32°
16°
Apr
31°
16°
May
27°
16°
Jun
26°
14°
Jul
25°
14°
Aug
25°
15°
Sep
25°
14°
Oct
26°
12°
Nov
26°
11°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)