Matías Romero Avendaño weather in May

In May, Matías Romero Avendaño sees average daytime highs of 33°C and overnight lows near 23°C, with 62 mm of rain across 10.5 wet days and about 12.8 hours of daylight. It is the 1st-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 32% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 36 min at the start of May to 12 h 54 min by month's end. Set against the rest of the year, May is Matías Romero Avendaño's 4th-clearest and 7th-windiest month. For the whole year in context, see Matías Romero Avendaño's year-round climate.

Daytime high
33°
1st warmest
Overnight low
23°
12th coldest
Rainfall
62 mm
10.5 wet days
Daylight
12 h 48 min
5:53 AM – 6:40 PM
Cloud cover
56%
4th clearest
Wind
15 km/h
7th windiest
Solar energy
6.28 kWh/m²
Travel score
3.3
out of 10

Matías Romero Avendaño is municipal seat of Matías Romero, State of Oaxaca, Mexico.

Density
13/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical May day in Matías Romero Avendaño reaches about 33°C in the afternoon and slips back to 23°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 37°C. Set against its neighbours, May runs about 1°C warmer than April and about 2°C warmer than June.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13323
23323
33323
43423
53423
63423
73423
83423
93423
103423
113423
123423
133424
143424
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324
313324

How May really feels in Matías Romero Avendaño

Once humidity and wind are folded in, May averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Matías Romero Avendaño weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 18°4710.911.16.7
Feb27° / 19°347.211.46.7
Mar30° / 20°286.411.95.6
Apr33° / 22°255.412.44.2
May33° / 23°6210.512.83.3
Jun32° / 23°19020.7132.9
Jul30° / 23°21125.312.93.0
Aug30° / 23°23126.412.63.0
Sep30° / 23°23923.712.13.3
Oct28° / 22°16819.311.64.5
Nov27° / 20°8714.411.25.8
Dec25° / 19°4710.8116.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 23% of May, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26436
36238
46238
56139
66139
75941
85941
95842
105842
115743
125743
135644
145644
155644
165743
175644
185644
195545
205545
215446
225347
235248
245248
255149
265050
274951
284753
294456
304357
314258

Chance of precipitation in May

Any precipitation

Matías Romero Avendaño gets around 62 mm of rain over 10.5 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 34% and peaks near 48% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
120
221
321
422
523
624
725
827
928
1029
1131
1232
1333
1433
1534
1635
1736
1837
1937
2038
2139
2240
2340
2441
2542
2643
2744
2845
2946
3047
3148

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

Most of May feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, May lands in the oppressive band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1641530
2640540
3639550
4538570
5537580
6536590
7435610
8434620
9433630
10432631
11331651
12329671
13328681
14327691
15227701
16226711
17225712
18224722
19223732
20223732
21222742
22121762
23120772
24120772
25119782
26118792
27118792
28117802
29116812
30116812
31115813

Wind in May

Winds average 15 km/h in May.

Across May, daily wind ranges from about 13 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
116light breeze
216light breeze
316light breeze
416light breeze
516light breeze
616light breeze
716light breeze
816light breeze
916light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3013light breeze
3113light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 36 min at the start of May to 12 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over May. Sunrise moves from 5:59 AM to 5:50 AM, and sunset from 6:35 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:596:35
212.65:596:36
312.65:586:36
412.65:586:36
512.75:576:36
612.75:576:37
712.75:566:37
812.75:566:37
912.75:556:38
1012.75:556:38
1112.75:556:38
1212.75:546:39
1312.85:546:39
1412.85:536:39
1512.85:536:40
1612.85:536:40
1712.85:526:40
1812.85:526:41
1912.85:526:41
2012.85:526:41
2112.85:516:42
2212.85:516:42
2312.95:516:42
2412.95:516:43
2512.95:516:43
2612.95:506:44
2712.95:506:44
2812.95:506:44
2912.95:506:45
3012.95:506:45
3112.95:506:45

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.28 kWh/m².

For context, solar energy here swings from a low near 3.65 kWh/m² to a high of 6.42 kWh/m² in April across the year — May's 6.28 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.4Intense
96.4Intense
106.4Intense
116.4Intense
126.4Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.3Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.1Intense
246.1Intense
256.1Intense
266.0Intense
276.0Intense
286.0Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in May

Hazard calendar for Matías Romero Avendaño

In seasonPeak

None of Matías Romero Avendaño's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Matías Romero Avendaño's monsoon runs June–October, when most of the year's rain falls.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Matías Romero Avendaño?

Our two travel scores rate May for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.3
Sightseeing
8th-best month of the year
6.1
Beach & pool
5th-best month of the year

May is a weaker month for outdoor sightseeing in Matías Romero Avendaño. The water and warmth also suit a beach or pool day.

What to pack for Matías Romero Avendaño in May

From May's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In May, Matías Romero Avendaño sees daytime highs around 33°C and nights near 23°C. Pack light clothes and sun protection. Worth having: rain gear. About 11 days see rain.

light clothessun protectionrain gear

UV index in Matías Romero Avendaño in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Matías Romero Avendaño peaks around August 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 16UV 13Dec 18UV 8
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Matías Romero Avendaño in May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May falls, not just the annual average.

Air quality in Matías Romero Avendaño is worst in May — around 53 µg/m³ PM2.5 (poor), about 5.2× the cleanest month (January, 10 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodMay 1650 µg/m³Jan 1510 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar16Moderate
Apr27Moderate
May53Poor
Jun26Moderate
Jul29Moderate
Aug22Moderate
Sep19Moderate
Oct13Moderate
Nov11Good
Dec11Good
Location & terrain

Where is Matías Romero Avendaño?

Matías Romero Avendaño sits at 16.9°N, 95.0°W, 186 m above sea level, in Mexico. The nearest listed city is Ixtepec, 36 km away.

Topography around Matías Romero Avendaño

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Matías Romero Avendaño.

Within 3 km, the terrain around Matías Romero Avendaño has only modest variations in elevation — a maximum elevation change of 92 m around an average of 205 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,088 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,304 m.

The land around Matías Romero Avendaño is covered by trees (46%) and grassland (38%) within 3 km, trees (62%) and grassland (36%) within 16 km, and trees (61%) and grassland (23%) within 80 km.

3 km
92 m
16 km
1,088 m
80 km
2,304 m
treesshrubsgrasslandcroplandartificial surfaceswater
May weather nearby: Ixtepec 36 km · Heroica Ciudad de Juchitán de Zaragoza 49 km · Santo Domingo Tehuantepec 65 km · Salina Cruz 80 km · Acayucan 120 km · Jáltipan de Morelos 126 km · Cosoleacaque 132 km · Minatitlán 135 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Matías Romero Avendaño (16.8774°, -95.0382°, elevation 186 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).