Mapastepec weather in May

In May, Mapastepec sees average daytime highs of 31°C and overnight lows near 23°C, with 179 mm of rain across 20 wet days and about 12.7 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 32°C in the first days to 30°C by the end. The sky is clear or mostly clear about 26% of the time in May, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of May to 12 h 48 min by month's end. Set against the rest of the year, May is Mapastepec's 7th-clearest and 8th-windiest month. For the whole year in context, see Mapastepec's year-round climate.

Daytime high
31°
5th warmest
Overnight low
23°
12th coldest
Rainfall
179 mm
20 wet days
Daylight
12 h 42 min
5:46 AM – 6:29 PM
Cloud cover
61%
7th clearest
Wind
5 km/h
8th windiest
Solar energy
6.19 kWh/m²
Travel score
3.5
out of 10

Mapastepec is municipal seat of Mapastepec, State of Chiapas, Mexico.

Founded
1486

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 32°C in the first days to 30°C by the end.

A typical May day in Mapastepec reaches about 31°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, May runs about 1°C cooler than April and about 1°C warmer than June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13223
23223
33223
43223
53223
63223
73223
83223
93223
103123
113123
123123
133123
143123
153123
163123
173123
183123
193123
203123
213123
223123
233023
243023
253023
263023
273023
283023
293023
303023
313023

How May really feels in Mapastepec

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.

Mapastepec weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°30.911.26.0
Feb32° / 21°30.911.55.6
Mar32° / 22°72.311.95.1
Apr32° / 23°337.212.34.4
May31° / 23°1792012.73.5
Jun30° / 23°33825.812.93.0
Jul30° / 23°31428.112.82.8
Aug30° / 23°35428.412.52.9
Sep29° / 23°44927.412.13.0
Oct30° / 22°29924.911.63.4
Nov30° / 22°9011.411.35.0
Dec31° / 21°92.211.16.1

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 21% of May, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17129
27030
36931
46733
56535
66436
76337
86139
95941
105743
115644
125446
135248
145149
154852
164852
174555
184357
194258
204060
213862
223664
233466
243367
253169
262971
272872
282674
292476
302278
312080

Chance of precipitation in May

Any precipitation

Mapastepec gets around 179 mm of rain over 20 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 64% and peaks near 80% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
140
242
343
445
546
648
750
852
954
1056
1157
1259
1361
1462
1564
1666
1768
1869
1971
2072
2174
2275
2376
2477
2577
2678
2778
2879
2979
3080
3180

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 81% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11320733
21318753
30317764
40216784
50215794
60214795
70113815
80112816
90112816
100111817
110110827
120110818
13019828
14018829
150188110
160178210
170168211
180268012
190258112
200258013
210258013
220248113
230148213
240148213
250138313
260138412
270138412
280138412
290138511
300038611
310038710

Wind in May

Winds average 5 km/h in May.

Across May, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 30 min at the start of May to 12 h 48 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 5:52 AM to 5:44 AM, and sunset from 6:25 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:526:25
212.65:526:25
312.65:516:26
412.65:516:26
512.65:506:26
612.65:506:26
712.65:506:27
812.65:496:27
912.65:496:27
1012.75:486:28
1112.75:486:28
1212.75:486:28
1312.75:476:28
1412.75:476:29
1512.75:476:29
1612.75:466:29
1712.75:466:30
1812.75:466:30
1912.75:466:30
2012.85:456:31
2112.85:456:31
2212.85:456:31
2312.85:456:32
2412.85:456:32
2512.85:446:32
2612.85:446:33
2712.85:446:33
2812.85:446:33
2912.85:446:34
3012.85:446:34
3112.85:446:34

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.19 kWh/m².

For context, solar energy here swings from a low near 5.03 kWh/m² to a high of 6.82 kWh/m² in April across the year — May's 6.19 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.7Intense
26.7Intense
36.6Intense
46.6Intense
56.6Intense
66.6Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.4Intense
126.4Intense
136.4Intense
146.3Intense
156.3Intense
166.3Intense
176.2Intense
186.2Intense
196.1Intense
206.1Intense
216.0Intense
226.0Bright
235.9Bright
245.8Bright
255.8Bright
265.7Bright
275.7Bright
285.6Bright
295.6Bright
305.5Bright
315.5Bright
Planning a trip in May

Hazard calendar for Mapastepec

In seasonPeak

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

Mapastepec sits in the Atlantic hurricane belt; the season peaks August–October.

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

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

Is May a good time to visit Mapastepec?

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

3.5
Sightseeing
7th-best month of the year
5.2
Beach & pool
7th-best month of the year

May is a weaker month for outdoor sightseeing in Mapastepec.

What to pack for Mapastepec in May

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

In May, Mapastepec sees daytime highs around 31°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Mapastepec in May

The nearest coast averages about 30°C in May — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 km away) is warmest in August at about 31°C and coldest in February near 28°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug31Tropical
Sep30Tropical
Oct30Tropical
Nov30Tropical
Dec29Tropical

UV index in Mapastepec 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 Mapastepec peaks around April 11 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 11UV 14Dec 20UV 9
UV index (midday)Level
Jan9Very high
Feb13Extreme
Mar13Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Mapastepec 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 Mapastepec is worst in May — around 36 µg/m³ PM2.5 (poor), about 3.6× the cleanest month (January, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1335 µg/m³Jan 110 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar16Moderate
Apr30Moderate
May36Poor
Jun20Moderate
Jul22Moderate
Aug19Moderate
Sep18Moderate
Oct15Moderate
Nov12Good
Dec10Good
Location & terrain

Where is Mapastepec?

Mapastepec sits at 15.4°N, 92.9°W, 44 m above sea level, in Mexico. The nearest listed city is Pijijiapan, 43 km away.

Topography around Mapastepec

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

Within 3 km, the terrain around Mapastepec has only modest variations in elevation — a maximum elevation change of 73 m around an average of 40 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,919 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,181 m.

The land around Mapastepec is covered by grassland (69%) within 3 km, trees (49%) and grassland (48%) within 16 km, and trees (49%) and water (26%) within 80 km.

3 km
73 m
16 km
1,919 m
80 km
3,181 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
May weather nearby: Pijijiapan 43 km · Huixtla 57 km · Motozintla 70 km · Comalapa 85 km · Tapachula 90 km · Cacahoatán 93 km · Villaflores 97 km · Venustiano Carranza 107 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 Mapastepec (15.4336°, -92.9004°, elevation 44 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).