Oaxaca, Mexico Climate & Monthly Averages
The climate of Oaxaca
Temperature barely moves in Oaxaca - 5°C between the average May and the average January. Rainfall does the work instead: 6.8 inches (174 mm) in September against 2 mm (0.1 in) in February.
Climate quick facts
- Hottest month: May - highs near 86°F (30°C)
- Coldest month: January - highs near 78°F (26°C)
- Decade extremes (2015-2024): 101°F (38°C) high · 40°F (4°C) low
- Wettest month: September (20 rainy days) · Sunniest: April (11.9 h sun/day)
- Climate type: subtropical highland
- Annual swing: 5°C between the average warmest and coolest month · day to night: 13°C
- Months averaging 30°C or hotter: 2
- Average humidity: 64%
Temperatures through the year
Days and nights are about 13°C apart on average - wider than 96% of the 3496 cities in our dataset. January sits at the other end of the year: 78°F (26°C) by day, 51°F (11°C) at night. At its warmest, in May, Oaxaca runs to 86°F (30°C) in the afternoon and back to 61°F (16°C) by dawn. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 101°F (38°C) and the lowest daily minimum 40°F (4°C). 6 months average under 20 mm of rain, the longest unbroken stretch running November through April.
Rain, sun and snow
Between the average May and the average January lie 5°C, a narrower spread than about 86% of the cities we track. Relative humidity averages 64% across the year, drier than about 80% of the cities we track.
How Oaxaca compares
- The city sees 10.9 hours of sunshine on an average day - sunnier than 93% of the 3496 cities we track.
Ranked against every city in our dataset, each measured on the same ten-year window.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 78° | 51° | 0 | 0.1 in | 10.7 h/day | 56% |
| February | 82° | 52° | 0 | 0.1 in | 11.1 h/day | 52% |
| March | 85° | 56° | 2 | 0.7 in | 11.3 h/day | 52% |
| April | 87° | 59° | 5 | 0.7 in | 11.9 h/day | 51% |
| May | 86° | 61° | 9 | 2.3 in | 11.6 h/day | 58% |
| June | 79° | 60° | 20 | 6.6 in | 10.4 h/day | 73% |
| July | 78° | 58° | 18 | 4.5 in | 11.4 h/day | 74% |
| August | 78° | 58° | 20 | 5.7 in | 10.7 h/day | 75% |
| September | 76° | 59° | 20 | 6.8 in | 9.7 h/day | 78% |
| October | 77° | 57° | 11 | 3.7 in | 10.2 h/day | 73% |
| November | 78° | 54° | 2 | 0.3 in | 10.7 h/day | 64% |
| December | 78° | 52° | 0 | 0.1 in | 10.7 h/day | 58% |
Oaxaca month by month
Oaxaca weather in January
January brings highs around 78°F (26°C), lows near 51°F (11°C), about 0 wet days - typically the coldest month of the year in Oaxaca.
Oaxaca weather in February
February brings highs around 82°F (28°C), lows near 52°F (11°C), about 0 wet days - typically the driest month of the year in Oaxaca.
Oaxaca weather in March
March brings highs around 85°F (29°C), lows near 56°F (13°C), about 2 wet days.
Oaxaca weather in April
April brings highs around 87°F (31°C), lows near 59°F (15°C), about 5 wet days - typically the sunniest month of the year in Oaxaca.
Oaxaca weather in May
May brings highs around 86°F (30°C), lows near 61°F (16°C), about 9 wet days - typically the hottest month of the year in Oaxaca.
Oaxaca weather in June
June brings highs around 79°F (26°C), lows near 60°F (16°C), about 20 wet days.
Oaxaca weather in July
July brings highs around 78°F (26°C), lows near 58°F (14°C), about 18 wet days.
Oaxaca weather in August
August brings highs around 78°F (26°C), lows near 58°F (15°C), about 20 wet days.
Oaxaca weather in September
September brings highs around 76°F (25°C), lows near 59°F (15°C), about 20 wet days - typically the wettest month of the year in Oaxaca.
Oaxaca weather in October
October brings highs around 77°F (25°C), lows near 57°F (14°C), about 11 wet days.
Oaxaca weather in November
November brings highs around 78°F (26°C), lows near 54°F (12°C), about 2 wet days.
Oaxaca weather in December
December brings highs around 78°F (26°C), lows near 52°F (11°C), about 0 wet days.
Seasons in Oaxaca
Spring (March through May)
Through spring, Oaxaca brings hot afternoons: 86°F (30°C) by day, 59°F (15°C) after dark, and rain comes on about 16 days over the three months. Daylight is generous - around 11.6 hours of sun a day.
Summer (June through August)
Summer in Oaxaca is mild and warm, with daytime highs averaging 78°F (26°C) and nights around 59°F (15°C); rain falls on around 58 of the 90 days. Daylight is generous - around 10.8 hours of sun a day.
Fall (September through November)
Through fall, Oaxaca is pleasantly warm: 77°F (25°C) by day, 57°F (14°C) after dark, and rain falls on around 34 of the 90 days. Daylight is generous - around 10.2 hours of sun a day.
Winter (December through February)
Through winter, Oaxaca settles into easy warmth: 79°F (26°C) by day, 52°F (11°C) after dark, and precipitation is sparse, near 7 mm (0.3 in) for the season. Daylight is generous - around 10.8 hours of sun a day.
Climate questions, answered
How sunny is Oaxaca?
How cold does Oaxaca get in winter?
What is the average temperature in Oaxaca?
How many hot months does Oaxaca have?
How much do temperatures drop at night in Oaxaca?
Best time to visit Oaxaca
Aim for November to February if you get the choice: warm days, manageable rainfall and plenty of daylight line up, and highs average 79°F (26°C) against roughly 1 wet days a month. For the same question asked the other way round, see where else is warm in November.
Pack for Oaxaca with light clothing for the warm months and a compact umbrella or rain shell. Even in May, lows of 61°F (16°C) make an extra layer worth the space.
Oaxaca temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.