Climate averages 1991–2020
Oaxaca weather
in May.
A hot, moderately wet month: the 2nd warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Oaxaca: daytime highs average 28.3°C and nights cool to about 15.9°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 73 mm of rain on roughly 9 days, which makes May a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 55 min on an average May day.
The nearest other city in this atlas is Tuxtepec (131 km away). In May its highs average 33.9°C, 5.5°C warmer than Oaxaca, with 117 mm of rain.
Among the 153 cities listed in Mexico, Oaxaca ranks joint 101st of 153 for the warmest May highs and 114th of 153 for the driest May (rainfall, lowest first). The mean May high of those 153 cities is 29.6°C; Oaxaca is 1.3°C cooler than that mean.
From May to June, average highs fall by 2.9°C to 25.4°C, and monthly rainfall rises from 73 mm to 163 mm.
The annual picture
May in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Oaxaca climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 24.3°C11.3°C | 11.3°C | 3.0 | 0.6 | 11.211 h |
| February | 26.4°C12.1°C | 12.1°C | 4.6 | 1.1 | 11.612 h |
| March | 28.2°C13.3°C | 13.3°C | 16 | 2.9 | 12.012 h |
| April | 29.5°C14.9°C | 14.9°C | 29 | 4.9 | 12.513 h |
| May, selected | 28.3°C15.9°C | 15.9°C | 73 | 9.3 | 12.913 h |
| June | 25.4°C16.0°C | 16.0°C | 163 | 17.0 | 13.113 h |
| July | 24.7°C15.3°C | 15.3°C | 104 | 13.9 | 13.013 h |
| August | 24.9°C15.6°C | 15.6°C | 125 | 15.1 | 12.713 h |
| September | 24.0°C15.7°C | 15.7°C | 160 | 17.1 | 12.212 h |
| October | 23.8°C14.6°C | 14.6°C | 71 | 8.7 | 11.812 h |
| November | 23.8°C12.8°C | 12.8°C | 9.8 | 2.0 | 11.311 h |
| December | 24.1°C11.7°C | 11.7°C | 3.5 | 0.7 | 11.111 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Tuxtepec in MayMexico · 131 kmHigh 33.9°C · Low 24.7°C · 117 mm rain
- Tehuacán in MayMexico · 172 kmHigh 27.0°C · Low 15.1°C · 100 mm rain
- Salina Cruz in MayMexico · 191 kmHigh 32.5°C · Low 25.4°C · 67 mm rain
- Heroica Ciudad de Juchitán de Zaragoza in MayMexico · 194 kmHigh 33.3°C · Low 24.9°C · 51 mm rain
- Orizaba in MayMexico · 203 kmHigh 25.7°C · Low 15.6°C · 211 mm rain
- Córdoba, Mexico in MayMexico · 204 kmHigh 26.6°C · Low 17.0°C · 238 mm rain
- Veracruz in MayMexico · 244 kmHigh 33.1°C · Low 24.9°C · 44 mm rain
- Minatitlán in MayMexico · 253 kmHigh 33.2°C · Low 24.7°C · 72 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Oaxaca) is explained once on the Oaxaca year overview and on the Sources, method and limits page.