Oaxaca climate

Name: Oaxaca
Address: MX

Oaxaca is warmest in April, with average highs of 30 °C, and coldest in January, when nights average 11 °C. June is the wettest month (158 mm) and January the driest (3.2 mm). Figures are 1991–2020 climate normals.

Across a full year Oaxaca averages 740 mm of rain and 219 days above 25 °C.

Mexico · population 255,029 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month April 30 °C
Coldest month January 11 °C
Driest month January 3 mm
Wettest month June 158 mm
Least cloud February 27 % cloud
Hottest on record May 37 °C
Coldest on record November 0.1 °C

What to expectOaxaca through the year

Oaxaca has a clear annual cycle: average daily highs run from 25 °C in January to 30 °C in April, a swing of 4.5 °C in mean temperature across the year.

Counted across a normal year, 219 days a year reach 25 °C, 40 of them reach 30 °C. The warmest reading in the 1991–2020 record is 37 °C, in May.

Rain is strongly seasonal. June averages 158 mm against 3 mm in January — 50 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	24.9 °C	3 mm	32 %
February	26.9 °C	4 mm	27 %
March	28.7 °C	15 mm	30 %
April	29.9 °C	28 mm	37 %
May	28.6 °C	70 mm	56 %
June	25.5 °C	158 mm	79 %
July	24.9 °C	102 mm	75 %
August	25.1 °C	121 mm	77 %
September	24.1 °C	153 mm	84 %
October	24.1 °C	75 mm	67 %
November	24.3 °C	9 mm	45 %
December	24.7 °C	4 mm	35 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	24.9 °C	10.7 °C	17.1 °C	31.2 °C	1.9 °C	17	0
February	26.9 °C	11.5 °C	18.5 °C	32.6 °C	2.5 °C	22	3
March	28.7 °C	12.7 °C	20.1 °C	35.1 °C	1.8 °C	28	10
April	29.9 °C	14.5 °C	21.7 °C	36.5 °C	6.7 °C	29	15
May	28.6 °C	15.5 °C	21.5 °C	37.3 °C	8.3 °C	28	10
June	25.5 °C	15.5 °C	20.0 °C	34.7 °C	11.1 °C	17	1
July	24.9 °C	14.7 °C	19.4 °C	30.2 °C	11.1 °C	15	0
August	25.1 °C	14.9 °C	19.5 °C	31.2 °C	9.6 °C	16	0
September	24.1 °C	15.1 °C	19.0 °C	30.4 °C	9.4 °C	8	0
October	24.1 °C	14.0 °C	18.5 °C	29.8 °C	2.7 °C	10	0
November	24.3 °C	12.2 °C	17.6 °C	30.5 °C	0.1 °C	12	0
December	24.7 °C	11.1 °C	17.2 °C	29.9 °C	1.2 °C	16	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	3 mm	0	11 h/day	32 %	59 %	12 km/h
February	4 mm	1	12 h/day	27 %	56 %	14 km/h
March	15 mm	3	12 h/day	30 %	54 %	15 km/h
April	28 mm	5	13 h/day	37 %	55 %	14 km/h
May	70 mm	10	13 h/day	56 %	63 %	12 km/h
June	158 mm	18	13 h/day	79 %	76 %	11 km/h
July	102 mm	15	13 h/day	75 %	75 %	11 km/h
August	121 mm	16	13 h/day	77 %	76 %	11 km/h
September	153 mm	18	12 h/day	84 %	80 %	9.8 km/h
October	75 mm	9	12 h/day	67 %	75 %	10 km/h
November	9 mm	2	11 h/day	45 %	67 %	11 km/h
December	4 mm	1	11 h/day	35 %	62 %	11 km/h

How Oaxaca compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Oaxaca	30 °C	11 °C	740 mm	219
Tuxtepec · Mexico	34 °C	19 °C	2,348 mm	328
Tehuacán · Mexico	28 °C	9.8 °C	658 mm	171
Córdoba · Mexico	27 °C	12 °C	2,043 mm	156
Veracruz · Mexico	33 °C	19 °C	1,126 mm	329
Coatzacoalcos · Mexico	32 °C	20 °C	1,877 mm	315
Puebla · Mexico	26 °C	7.4 °C	864 mm	66

Where Oaxaca ranks

Ranking	Position	Value
The driest places in North America in December	3rdof 50	3.5 mm
The driest places in North America in November	4thof 50	8.8 mm
The driest places in North America in January	6thof 50	3.2 mm
The driest places in North America in February	9thof 50	4.4 mm
Places with the best weather in North America in January	18thof 50	94/100
Places with the best weather in North America in December	19thof 50	94/100

Planning a trip? See the best time to visit Oaxaca.

QuestionsCommon questions about Oaxaca’s climate

When is the best time to visit Oaxaca?

That depends on what you want, so the honest answer is a comparison rather than a single month. March, June, August sit closest to 20 °C on average, April is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Oaxaca get?

In April, the warmest month, daily highs average 30 °C. About 40 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 11 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Oaxaca?

June, averaging 158 mm over 18 days with rain. The driest month is January with 3 mm. The year as a whole averages 740 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Oaxaca rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.