Loreto weather in May

In May, Loreto sees average daytime highs of 29°C and overnight lows near 14°C, with 22 mm of rain across 4.9 wet days and about 13.1 hours of daylight. It is the 1st-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 57% of the time in May, and the air most often feels dry.

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 Loreto's 4th-clearest and 11th-windiest month. For the whole year in context, see Loreto's year-round climate.

Daytime high
29°
1st warmest
Overnight low
14°
9th coldest
Rainfall
22 mm
4.9 wet days
Daylight
13 h 06 min
6:12 AM – 7:16 PM
Cloud cover
39%
4th clearest
Wind
10 km/h
11th windiest
Solar energy
7.7 kWh/m²
Travel score
6.4
out of 10

Loreto is human settlement in Zacatecas, Mexico.

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 29°C through the month.

A typical May day in Loreto reaches about 29°C in the afternoon and slips back to 14°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, May runs about 1°C warmer than April and about 1°C warmer than June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12913
22913
32913
42913
52913
62913
72913
82914
92914
102914
112914
122914
132914
142914
152914
162914
172914
182914
192914
202914
212914
222915
232915
242915
252915
262915
272915
282915
292915
302915
312915

Loreto weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 142.110.87.9
Feb23° / 111.711.28.6
Mar25° / 61.311.88.6
Apr28° / 12°51.612.57.6
May29° / 14°224.913.16.4
Jun28° / 15°701013.36.1
Jul26° / 15°9512.113.26.4
Aug26° / 15°8011.112.86.5
Sep25° / 14°811112.16.6
Oct25° / 12°305.111.57.9
Nov23° / 101.810.98.6
Dec21° / 71.110.78.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% 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 22%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17327
27327
37327
47327
57426
67426
77525
87525
97624
107624
117624
127723
137723
147822
157921
167921
177921
188020
198020
208020
218020
228119
238119
248119
258119
268020
278020
288020
298020
307921
317921

Chance of precipitation in May

Any precipitation

Loreto gets around 22 mm of rain over 4.9 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 15% and peaks near 19% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
19
210
310
411
512
613
713
814
914
1015
1115
1215
1315
1415
1515
1615
1716
1816
1916
2016
2117
2217
2317
2417
2517
2617
2717
2818
2918
3019
3119

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
16991
17991
18991
19991
20982
21982
22982
23973
24973
25964
26964
27955
28955
29946
30937
31937

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 6:21 AM to 6:08 AM, and sunset from 7:09 PM to 7:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:217:09
212.86:207:10
312.86:197:10
412.96:197:11
512.96:187:11
612.96:187:12
712.96:177:12
812.96:167:12
913.06:167:13
1013.06:157:13
1113.06:157:14
1213.06:147:14
1313.06:147:15
1413.06:137:15
1513.06:137:16
1613.16:127:16
1713.16:127:17
1813.16:117:17
1913.16:117:17
2013.16:117:18
2113.16:107:18
2213.16:107:19
2313.26:107:19
2413.26:097:20
2513.26:097:20
2613.26:097:21
2713.26:097:21
2813.26:087:22
2913.26:087:22
3013.26:087:22
3113.36:087:23

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.7 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.68 kWh/m² to a high of 7.7 kWh/m² in May across the year — May's 7.7 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.8Intense
27.8Intense
37.8Intense
47.7Intense
57.7Intense
67.7Intense
77.7Intense
87.7Intense
97.7Intense
107.7Intense
117.7Intense
127.7Intense
137.7Intense
147.7Intense
157.7Intense
167.7Intense
177.7Intense
187.7Intense
197.7Intense
207.7Intense
217.7Intense
227.7Intense
237.7Intense
247.7Intense
257.7Intense
267.6Intense
277.6Intense
287.6Intense
297.6Intense
307.5Intense
317.5Intense
Planning a trip in May

Is May a good time to visit Loreto?

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

6.4
Sightseeing
10th-best month of the year
8.2
Beach & pool
2nd-best month of the year

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

What to pack for Loreto in May

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

In May, Loreto sees daytime highs around 29°C and nights near 14°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Loreto in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Loreto peaks around May 24 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMay 24UV 14Dec 18UV 7
UV index (midday)Level
Jan7Very high
Feb10Extreme
Mar12Extreme
Apr14Extreme
May14Extreme
Jun14Extreme
Jul13Extreme
Aug14Extreme
Sep13Extreme
Oct10Extreme
Nov8Very high
Dec7High
Location & terrain

Where is Loreto?

Loreto sits at 22.3°N, 102.0°W, 2,065 m above sea level, in Mexico. The nearest listed city is Pabellón de Arteaga, 33 km away.

Topography around Loreto

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

Within 3 km, the terrain around Loreto has only modest variations in elevation — a maximum elevation change of 82 m around an average of 2,034 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 671 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,290 m.

The land around Loreto is covered by cropland (56%) within 3 km, shrubs (56%) and cropland (33%) within 16 km, and shrubs (55%) and cropland (30%) within 80 km.

3 km
82 m
16 km
671 m
80 km
1,290 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Pabellón de Arteaga 33 km · Rincón de Romos 35 km · San Francisco de los Romo 37 km · Salinas de Hidalgo 48 km · Jesús María 50 km · Aguascalientes 53 km · Guadalupe 76 km · Zacatecas 82 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 Loreto (22.2719°, -101.986°, elevation 2,065 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).