Altamira weather in May

In May, Altamira sees average daytime highs of 31°C and overnight lows near 24°C, with 41 mm of rain across 8.7 wet days and about 13.1 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 50% of the time in May, and the air most often feels miserable.

Daylight stretches from about 12 h 48 min at the start of May to 13 h 18 min by month's end. Set against the rest of the year, May is Altamira's 1st-clearest and 2nd-windiest month. For the whole year in context, see Altamira's year-round climate.

Daytime high
31°
4th warmest
Overnight low
24°
8th coldest
Rainfall
41 mm
8.7 wet days
Daylight
13 h 06 min
5:56 AM – 7:00 PM
Cloud cover
44%
1st clearest
Wind
12 km/h
2nd windiest
Solar energy
6.14 kWh/m²
Travel score
5.1
out of 10

Altamira is municipal seat of Altamira, State of Tamaulipas, Mexico.

Founded
1749

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 31°C through the month.

A typical May day in Altamira reaches about 31°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, May runs about 2°C warmer than April and on par with June.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173124
183124
193125
203125
213125
223125
233125
243125
253125
263125
273125
283125
293125
303125
313125

How May really feels in Altamira

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.

Altamira weather by month

How May compares with the rest of the year at a glance. May is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 17°346.810.87.3
Feb24° / 18°224.211.27.8
Mar26° / 20°25511.87.5
Apr29° / 22°294.712.56.4
May31° / 24°418.713.15.1
Jun31° / 25°1161713.33.9
Jul31° / 25°12218.313.23.8
Aug31° / 25°11018.112.83.7
Sep30° / 25°17320.312.13.7
Oct29° / 23°9912.511.55.6
Nov26° / 20°447.810.97.1
Dec24° / 17°255.810.77.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in May, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 24% of May, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26535
36535
46535
56535
66634
76733
86733
96832
106832
116931
127129
137129
147228
157426
167426
177624
187624
197624
207822
217822
227822
237921
248020
257921
268020
278020
288020
298020
308020
317921

Chance of precipitation in May

Any precipitation

Altamira gets around 41 mm of rain over 8.7 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 28% and peaks near 38% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
116
217
318
418
519
620
721
822
923
1024
1125
1226
1327
1427
1528
1629
1730
1831
1931
2032
2132
2233
2334
2434
2535
2635
2736
2837
2937
3038
3138

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the miserable band about 50% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1136164431
2135154333
3125154235
4125144038
5124143940
6124133942
7124123843
8123113845
9113113846
10013103947
11012103947
1201294048
1301294048
1401284149
1501284149
1601174149
1701174150
1801174150
1901164151
2001164151
2100154054
2200154054
2300143956
2400143857
2500143758
2600133660
2700033661
2800023563
2900023464
3000013366
3100013267

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 48 min at the start of May to 13 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over May. Sunrise moves from 6:04 AM to 5:51 AM, and sunset from 6:53 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:046:53
212.86:046:54
312.96:036:54
412.96:026:55
512.96:026:55
612.96:016:56
712.96:016:56
812.96:006:56
913.05:596:57
1013.05:596:57
1113.05:586:58
1213.05:586:58
1313.05:576:59
1413.05:576:59
1513.15:567:00
1613.15:567:00
1713.15:557:01
1813.15:557:01
1913.15:557:01
2013.15:547:02
2113.15:547:02
2213.25:547:03
2313.25:537:03
2413.25:537:04
2513.25:537:04
2613.25:527:05
2713.25:527:05
2813.25:527:06
2913.25:527:06
3013.25:527:06
3113.35:517:07

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.14 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.27 kWh/m² to a high of 6.14 kWh/m² in May across the year — May's 6.14 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in May

Hazard calendar for Altamira

In seasonPeak

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

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

Altamira's rainy season runs June–October, when most of the year's rain falls.

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

Is May a good time to visit Altamira?

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

5.1
Sightseeing
8th-best month of the year
7.2
Beach & pool
3rd-best month of the year

May is a reasonable time to visit Altamira for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Altamira in May

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

In May, Altamira sees daytime highs around 31°C and nights near 24°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

Sea temperature near Altamira in May

The nearest coast averages about 27°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 32 km away) is warmest in September at about 29°C and coldest in February near 22°C.

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

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar23Refreshing
Apr25Warm
May27Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov26Warm
Dec24Refreshing

UV index in Altamira in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Altamira peaks around April 15 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highExtremeExtremeVery highHighApr 15UV 12Jan 10UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar9Very high
Apr12Extreme
May8Very high
Jun12Extreme
Jul10Very high
Aug12Extreme
Sep10Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Altamira 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 Altamira is worst in May — around 27 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (November, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMay 1926 µg/m³Nov 1110 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar15Moderate
Apr20Moderate
May27Moderate
Jun23Moderate
Jul24Moderate
Aug18Moderate
Sep15Moderate
Oct11Good
Nov10Good
Dec13Moderate
Location & terrain

Where is Altamira?

Altamira sits at 22.4°N, 97.9°W, 15 m above sea level, in Mexico. The nearest listed city is Miramar, 5.0 km away.

Topography around Altamira

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

Within 3 km, the terrain around Altamira has only modest variations in elevation — a maximum elevation change of 31 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 90 m; within 80 km, large variations in elevation — a maximum elevation change of 904 m.

The land around Altamira is covered by artificial surfaces (32%) and water (23%) within 3 km, water (33%) and grassland (26%) within 16 km, and grassland (35%) and water (31%) within 80 km.

3 km
31 m
16 km
90 m
80 km
904 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
May weather nearby: Miramar 5.0 km · Tampico 14 km · Ciudad Madero 19 km · Pánuco 45 km · Ébano 49 km · Tamuín 97 km · Ciudad Mante 113 km · Naranjos 119 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 Altamira (22.3931°, -97.9386°, elevation 15 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).